Contents

Yamaha F6CMHS v12 Owner's Manual PDF

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1 of 110

Summary of Content for Yamaha F6CMHS v12 Owner's Manual PDF

Read this manual carefully before operating this outboard motor.

OWNERS MANUAL

F2.5 F4 F6

LIT-18626-10-13 6BV-F8199-37-E0

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ZMU07696

Les gaz dchappement du moteur de ce produit contiennent des substances chimiques connues dans ltat de Californie pour provoquer le cancer, des anomalies congnitales et des troubles de la reproduction.

Read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating. This manual should stay with the outboard motor if it is sold.

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Important manual information EMU44140

To the owner Thank you for selecting a Yamaha outboard motor. This Owners Manual contains infor- mation needed for proper operation, mainte- nance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer. In this Owners Manual particularly important information is distinguished in the following ways.

: This is the safety alert symbol. It is used to alert you to potential personal injury haz- ards. Obey all safety messages that follow this symbol to avoid possible injury or death.

WARNING EWM00781

A WARNING indicates a hazardous situa- tion which, if not avoided, could result in death or serious injury.

NOTICE ECM00701

A NOTICE indicates special precautions that must be taken to avoid damage to the outboard motor or other property.

TIP: A TIP provides key information to make pro- cedures easier or clearer.

Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between

your machine and this manual. If there is any question concerning this manual, please con- sult your Yamaha dealer. To ensure long product life, Yamaha recom- mends that you use the product and perform the specified periodic inspections and mainte- nance by correctly following the instructions in the owners manual. Any damage resulting from neglect of these instructions is not cov- ered by warranty. Some countries have laws or regulations re- stricting users from taking the product out of the country where it was purchased, and it may be impossible to register the product in the destination country. Additionally, the war- ranty may not apply in certain regions. When planning to take the product to another coun- try, consult the dealer where the product was purchased for further information. If you purchased this outboard motor used, see your Yamaha dealer to have it registered in your name in Yamaha records.

TIP: The F2.5MHA, F4MHA, F6MHA and the stan- dard accessories are used as a base for the explanations and illustrations in this manual. Therefore some items may not apply to every model. EMU44200

F2.5, F4, F6 OWNERS MANUAL

2013 by Yamaha Motor Co., Ltd. 1st Edition, April 2013

All rights reserved. Any reprinting or unauthorized use without the written permission of

Yamaha Motor Co., Ltd. is expressly prohibited.

Printed in France

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Table of contents

Safety information.............................1 Outboard motor safety .................... 1

Propeller ............................................. 1 Rotating parts ..................................... 1 Hot parts............................................. 1 Electric shock ..................................... 1 Engine shut-off cord (lanyard) ............ 1 Gasoline ............................................. 1 Gasoline exposure and spills ............. 1 Carbon monoxide ............................... 1 Modifications ...................................... 2

Boating safety ................................. 2 Alcohol and drugs............................... 2 Personal flotation devices (PFDs) ...... 2 People in the water............................. 2 Passengers ........................................ 2 Overloading ........................................ 2 Avoid collisions................................... 2 Weather.............................................. 3 Accident reporting .............................. 3 Boat education and training................ 3 Passenger training ............................. 3 Boating safety publications................. 3 Laws and regulations ......................... 3

Boating organizations...................... 4 Basic boating rules

(Rules of the road) ....................... 4 Steering and sailing rules and sound

signals............................................. 4 Rules when encountering vessels...... 5 Other special situations ...................... 6

General information ..........................9 Identification numbers record.......... 9

Outboard motor serial number ........... 9 Read manuals and labels.............. 10

Warning labels.................................. 10 Warning labels.................................. 13

Specifications and requirements... 17 Specifications ................................ 17 Installation requirements ............... 18

Boat horsepower rating .................... 18 Mounting the outboard motor ........... 19

Propeller selection ........................ 19 Start-in-gear protection (F4, F6) ... 20 Engine oil requirements ................ 20 Fuel requirements ......................... 20

Gasoline ........................................... 20 Gasoline Additives............................ 22

Muddy or acidic water ................... 22 Anti-fouling paint ........................... 22 Motor disposal requirements......... 23 Emergency equipment .................. 23 Emission control information......... 23

North American models .................... 23 Star labels ........................................ 24

Components .................................... 26 Components diagram.................... 26

Fuel tank (built-in fuel tank) (F2.5) ... 28 Fuel tank (built-in fuel tank)

(F4, F6) ......................................... 28 Fuel tank (portable fuel tank)

(F4, F6) ......................................... 29 Fuel cock .......................................... 30 Tiller handle...................................... 31 Gear shift lever ................................. 31 Throttle grip ...................................... 32 Throttle indicator............................... 32 Throttle friction adjuster .................... 33 Engine shut-off cord (lanyard) and

clip................................................. 33 Engine stop button ........................... 34 Choke knob for pull type................... 34 Fuel joint cap (F4, F6) ...................... 35 Manual starter handle....................... 35 Steering friction adjuster................... 35 Trim rod (tilt pin) ............................... 36 Tilt lock mechanism (F4, F6) ............ 36 Tilt support bar (F4, F6).................... 37 Tilt support lever (F2.5) .................... 37 Cowling lock lever ............................ 37 Carrying handle ................................ 38

Installation ....................................... 39 Installation..................................... 39

Mounting the outboard motor ........... 39 Clamping the outboard motor ........... 41

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Table of contents

Operation ......................................... 43 First-time operation ....................... 43

Fill engine oil .................................... 43 Breaking in engine............................ 43 Getting to know your boat ................ 43

Checks before starting engine ...... 43 Fuel level .......................................... 43 Remove the top cowling ................... 44 Fuel system...................................... 44 Controls ............................................ 44 Engine shut-off cord (lanyard) .......... 45 Engine oil.......................................... 45 Engine .............................................. 46 Installing top cowling ........................ 46

Filling fuel ...................................... 48 Operating engine........................... 51

Sending fuel ..................................... 51 Starting engine ................................. 54

Checks after starting engine ......... 57 Cooling water ................................... 57

Warming up engine ....................... 57 Warming up ...................................... 57

Checks after engine warm up ....... 58 Shifting ............................................. 58 Stop switches ................................... 58

Shifting .......................................... 58 Stopping boat (F2.5) ..................... 59 Stopping boat (F4, F6) .................. 60 Stopping engine ............................ 60

Procedure......................................... 60 Trimming outboard motor.............. 62

Adjusting trim angle for manual tilt models .......................................... 63

Adjusting boat trim............................ 64 Tilting up and down ....................... 64

Procedure for tilting up ..................... 65 Procedure for tilting down................. 67

Shallow water (F4, F6) .................. 68 Cruising in shallow water.................. 68

Cruising in other conditions........... 69 Maintenance .................................... 70

Transporting and storing outboard motor.......................................... 70 Transporting/Dismounting

the outboard motor........................ 70 Storing outboard motor..................... 73 Procedure......................................... 73 Lubrication........................................ 77 Cleaning and anticorrosion

measures ...................................... 77 Cleaning the outboard motor ............ 77 Checking painted surface of

outboard motor.............................. 78 Periodic maintenance ................... 78

Replacement parts ........................... 78 Maintenance interval guidelines ....... 78 Maintenance chart 1......................... 79 Maintenance chart 2......................... 81 Greasing........................................... 81 Cleaning and adjusting spark plug ... 83 Checking fuel filter (F2.5) ................. 84 Checking fuel filter (F4, F6) .............. 84 Inspecting idle speed........................ 84 Changing engine oil.......................... 84 Checking connector and lead........... 88 Checking propeller ........................... 88 Removing propeller .......................... 89 Installing propeller ............................ 89 Changing gear oil ............................. 90 Inspecting and replacing anode

(external) ....................................... 91 Trouble Recovery............................ 92

Troubleshooting ............................ 92 Temporary action in emergency ... 94

Impact damage................................. 94 Starter will not operate ..................... 94 Emergency engine starting............... 94

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Table of contents

Treatment of submerged motor..... 99 Consumer information.................. 100

YAMAHA FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY............................. 100

IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE U.S.A. OR CANADA ........ 102

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1

Safety information EMU33622

Outboard motor safety Observe these precautions at all times. EMU36501

Propeller People can be injured or killed if they come in contact with the propeller. The propeller can keep moving even when the motor is in neu- tral, and sharp edges of the propeller can cut even when stationary. Stop the engine when a person is in the wa-

ter near you. Keep people out of reach of the propeller,

even when the engine is off. EMU33630

Rotating parts Hands, feet, hair, jewelry, clothing, PFD straps, etc. can become entangled with inter- nal rotating parts of the engine, resulting in se- rious injury or death. Keep the top cowling in place whenever pos- sible. Do not remove or replace the cowling with the engine running. Only operate the engine with the cowling re- moved according to the specific instructions in the manual. Keep hands, feet, hair, jewelry, clothing, PFD straps, etc. away from any ex- posed moving parts. EMU33640

Hot parts During and after operation, engine parts are hot enough to cause burns. Avoid touching any parts under the top cowling until the en- gine has cooled. EMU33650

Electric shock Do not touch any electrical parts while starting or operating the engine. They can cause shock or electrocution. EMU33671

Engine shut-off cord (lanyard) Attach the engine shut-off cord so that the en- gine stops if the operator falls overboard or leaves the helm. This prevents the boat from

running away under power and leaving peo- ple stranded, or running over people or ob- jects. Always attach the engine shut-off cord to a secure place on your clothing or your arm or leg while operating. Do not remove it to leave the helm while the boat is moving. Do not at- tach the cord to clothing that could tear loose, or route the cord where it could become en- tangled, preventing it from functioning. Do not route the cord where it is likely to be accidentally pulled out. If the cord is pulled during operation, the engine will shut off and you will lose most steering control. The boat could slow rapidly, throwing people and ob- jects forward. EMU33810

Gasoline Gasoline and its vapors are highly flam- mable and explosive. Always, refuel accord- ing to the procedure on page 51 to reduce the risk of fire and explosion. EMU33820

Gasoline exposure and spills Take care not to spill gasoline. If gasoline spills, wipe it up immediately with dry rags. Dispose of rags properly. If any gasoline spills onto your skin, immedi- ately wash with soap and water. Change clothing if gasoline spills on it. If you swallow gasoline, inhale a lot of gaso- line vapor, or get gasoline in your eyes, get immediate medical attention. Never siphon fuel by mouth. EMU33900

Carbon monoxide This product emits exhaust gases which con- tain carbon monoxide, a colorless, odorless gas which may cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking ex- haust outlets.

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Safety information

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EMU33780

Modifications Do not attempt to modify this outboard motor. Modifications to your outboard motor may re- duce safety and reliability, and render the out- board unsafe or illegal to use. EMU33740

Boating safety This section includes a few of the many im- portant safety precautions that you should fol- low when boating. EMU33710

Alcohol and drugs Never operate after drinking alcohol or taking drugs. Intoxication is one of the most common factors contributing to boating fatalities. EMU40280

Personal flotation devices (PFDs) Have an approved PFD on board for every oc- cupant. Yamaha recommends that you must wear a PFD whenever boating. At a minimum, children and non-swimmers should always wear PFDs, and everyone should wear PFDs when there are potentially hazardous boating conditions. EMU33731

People in the water Always watch carefully for people in the wa- ter, such as swimmers, skiers, or divers, whenever the engine is running. When some- one is in the water near the boat, shift into neutral and stop the engine. Stay away from swimming areas. Swimmers can be hard to see. The propeller can keep moving even when the motor is in neutral. Stop the engine when a person is in the water near you. EMU33751

Passengers Consult your boat manufacturers instructions for details about appropriate passenger loca- tions in your boat and be sure all passengers are positioned properly before accelerating and when operating above an idle speed.

Standing or sitting in non-designated loca- tions may result in being thrown either over- board or within the boat due to waves, wakes, or sudden changes in speed or direction. Even when people are positioned properly, alert your passengers if you must make any unusual maneuver. Always avoid jumping waves or wakes. EMU33761

Overloading Do not overload the boat. Consult the boat ca- pacity plate or boat manufacturer for maxi- mum weight and number of passengers. Be sure that weight is properly distributed ac- cording to the boat manufacturers instruc- tions. Overloading or incorrect weight distribution can compromise the boats han- dling and lead to an accident, capsizing or swamping. EMU33772

Avoid collisions Scan constantly for people, objects, and other boats. Be alert for conditions that limit your visibility or block your vision of others.

Operate defensively at safe speeds and keep a safe distance away from people, objects, and other boats. Do not follow directly behind other boats or

waterskiers. Avoid sharp turns or other maneuvers that

make it hard for others to avoid you or un- derstand where you are going.

ZMU06025

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Safety information

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Avoid areas with submerged objects or shallow water.

Ride within your limits and avoid aggressive maneuvers to reduce the risk of loss of con- trol, ejection, and collision.

Take early action to avoid collisions. Re- member, boats do not have brakes, and stopping the engine or reducing throttle can reduce the ability to steer. If you are not sure that you can stop in time before hitting an obstacle, apply throttle and turn in anoth- er direction.

EMU33790

Weather Stay informed about the weather. Check weather forecasts before boating. Avoid boat- ing in hazardous weather. EMU44160

Accident reporting Boat operators are required by law to file a Boating Accident Report with their boating law enforcement agency if their boat is involved in any of the following accidents: 1. There is loss of life or probable loss of life. 2. There is personal injury that requires

medical attention beyond first aid. 3. There is property damage to boats or oth-

er property over a certain amount. 4. There is complete loss of a boat. Contact local law enforcement personnel if a report is necessary. EMU44170

Boat education and training For U.S.A. Operators should take a boating safety course. This may be required in your state. Many of the organizations listed in the next section can provide information about cours- es in your area. You may also want to consider an Internet- based program for basic boater education. The Online Boating Safety Course provided by the BoatU.S. Foundation, is approved by

the National Association of State Boating Law Administrators (NASBLA) and recognized by the United States Coast Guard. Most, but not all, states accept this course to meet their minimum requirements. While it cannot re- place an in-depth course such as one offered by the U.S. Coast Guard, U.S. Power Squad- ron, or other organization, this online course does provide a general overview of the basics in boating safety, requirements, navigation, and operation. Upon successful completion of the course, the user can download a certifi- cate of completion immediately or, for a small charge, request one by mail. To take this free course, go to boatus.org. For Canada All operators of pleasure craft must illustrate competency by means of a Pleasure Craft Operators Card with the exception of Person- al Water Craft used for rental purposes which require a rental checklist be completed. Plea- sure Craft Operators Cards can be obtained following the completion of a competency course, with an on-line option. Details can be found on Transport Canadas website. www.tc.gc.ca EMU33880

Passenger training Make sure at least one other passenger is trained to operate the boat in the event of an emergency. EMU33890

Boating safety publications Be informed about boating safety. Additional publications and information can be obtained from many boating organizations. EMU33590

Laws and regulations Know the marine laws and regulations where you will be boating- and obey them. Several sets of rules prevail according to geographic location, but all are basically the same as the International Rules of the Road. The rules

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Safety information

4

presented in the following section are con- densed- and have been provided for your convenience only. Contact the U.S. Coast Guard, the National Association of State Boating Law Administra- tors, or your local Power Squadron for a com- plete set of rules governing the waters in which you will be using your boat. EMU44180

Boating organizations The following organizations provide boating safety training and information about boating safety and laws.

In the U.S.A. United States Coast Guard Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Af- fairs U.S. Coast Guard Headquarters Washington, D.C. 20593-0001 http://www.uscgboating.org/

United States Power Squadrons 1-888-FOR-USPS (1-888-367-8777) http://www.usps.org/

Boat Owners Association of The United States 1-800-336-BOAT (1-800-336-2628) http://www.boatus.com/

National Association of State Boating Law Administrators (NASBLA) 1500 Leestown Road, Suite 330 Lexington, KY 40511 859-225-9497 http://www.nasbla.org/

National Marine Manufacturers Associa- tion (NMMA) 200 East Randolph Drive Suite 5100

Chicago, IL 60601 http://www.nmma.org/

Marine Retailers Association of America 155 N. Michigan Ave. Chicago, IL 60304 http://www.mraa.com/

In the Canada National Marine Manufacturers Associa- tion Canada 14 McEwan Drive Suite 8 Bolton, ON L7E 1H1 http://www.nmma.org/

EMU33691

Basic boating rules (Rules of the road)

Just as there are rules that apply when you are driving on streets and highways, there are waterway rules that apply when you are driv- ing your boat. These rules are used interna- tionally. (For U.S.A.: and are also enforced by the United States Coast Guard and local agencies.) You should be aware of these rules, and follow them whenever you encoun- ter another vessel on the water. EMU33700

Steering and sailing rules and sound signals Whenever two vessels on the water meet one another, one vessel has the right-of-way; it is called the stand-on vessel. The vessel that does not have the right-of-way is called the give-way or burdenedvessel. These rules determine which vessel has the right-of-way, and what each vessel should do.

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Safety information

5

Stand-on vessel The vessel with the right-of-way has the duty to continue its course and speed, except to avoid an immediate collision. When you main- tain your direction and speed, the other vessel will be able to determine how best to avoid you.

Give-way vessel The vessel that does not have the right-of- way has the duty to take positive and timely action to stay out of the way of the Stand-On vessel. Normally, you should not cross in front of the vessel with the right-of-way. You should slow down or change directions briefly and pass behind the other vessel. You should al- ways move in such a way that the operator of the other vessel can see what you are doing. The general prudential rule This rule is called Rule 2 in the International Rules and says, In obeying and construing these rules due regard shall be had to all dangers of naviga- tion and collision, and to any special circum- stances, which may render a departure from the above rules necessary in order to avoid immediate danger. In other words, follow the standard rules ex- cept when a collision will occur unless both vessels try to avoid each other. If that is the case, both vessels become Give-Way ves- sels. EMU25521

Rules when encountering vessels There are three main situations that you may encounter with other vessels which could lead to a collision unless the Steering Rules are fol- lowed: Meeting: (you are approaching another ves- sel head-on) Crossing: (you are traveling across the other vessels path)

Overtaking: (you are passing or being passed by another vessel) In the following illustration, your boat is in the center. You should give the right-of-way to any vessels shown in white area (you are the Give-Way vessel). Any vessels in the shaded area must yield to you (they are the Give-Way vessels). Both you and the meeting vessel must alter course to avoid each other.

Meeting If you are meeting another power vessel head on, and are close enough to run the risk of col- lision, neither of you has the right-of-way Both of you should alter course to avoid an acci- dent. You should keep the other vessel on your port (left) side. This rule doesnt apply if both of you will clear one another if you con- tinue on your set course and speed.

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Crossing When two power driven vessels are crossing each others path close enough to run the risk of collision, the vessel which has the other on the starboard (right) side must keep out of the way of the other. If the other vessel is on your right, you must keep out of its way; you are the Give-Way vessel. If the other vessel is on your port (left) side, remember that you should maintain course and direction, provid- ed the other vessel gives you the right-of-way as it should.

Overtaking If you are passing another vessel, you are the Give-Way vessel. This means that the other vessel is expected to maintain its course and speed. You must stay out of its way until you are clear of it. Likewise, if another vessel is passing you, you should maintain your speed and direction so that the other vessel can steer itself around you. EMU25531

Other special situations There are three other rules you should be aware of when driving your boat around other vessels. Narrow channels and bends When navigating in narrow channels, you should keep to the right when it is safe and practical to do so. If the operator of a power- driven vessel is preparing to go around a bend that may obstruct the view of other water

vessels, the operator should sound a pro- longed blast on the whistle (4 to 6 seconds). If another vessel is around the bend, it too should sound the whistle. Even if no reply is heard, however, the vessel should still pro- ceed around the bend with caution. If you nav- igate such waters with your boat, you will need to carry a portable air horn, available from local marine supply stores. Fishing vessel right-of-way All vessels that are fishing with nets, lines or trawls are considered to be fishing vessels under the International Rules. Vessels with trolling lines are not considered fishing ves- sels. Fishing vessels have the right-of-way re- gardless of position. Fishing vessels cannot, however, impede the passage of other ves- sels in narrow channels. Sailing vessel right-of-way Sailing vessels should normally be given the right-of-way. The exceptions to this are: 1. When the sailing vessel is overtaking the

power-driven vessel, the power-driven vessel has the right-of-way.

2. Sailing vessels should keep clear of any fishing vessel.

3. In a narrow channel, a sailing vessel should not hamper the safe passage of a power-driven vessel that can navigate only in such a channel.

Reading buoys and other markers The waters of the United States are marked for safe navigation by the lateral system of buoyage. Simply put, buoys and markers have an arrangement of shapes, colors, num- bers and lights to show which side of the buoy a boater should pass on when navigating in a particular direction. The markings on these buoys are oriented from the perspective of be- ing entered from seaward (the boater is going towards the port). This means that red buoys

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Safety information

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are passed on the starboard (right) side when proceeding from open water into port, and black buoys are to port (left) side. When navi- gating out of port, your position with respect to the buoys should be reversed; red buoys should be to port and black buoys to star- board. Many bodies of water used by boaters are en- tirely within the boundaries of a particular state. The Uniform State Waterway Marking System has been devised for these waters. This system uses buoys and signs with dis- tinctive shapes and colors to show regulatory or advisory information. These markers are white with black letters and orange boarders. They signify speed zones, restricted areas, danger areas, and general information. Remember, markings may vary by geograph- ic location. Always consult local boating au- thorities before driving your boat in unfamiliar waters.

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Safety information

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ZMU01708

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General information

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EMU25171

Identification numbers record EMU25184

Outboard motor serial number The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket. Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is sto- len. F2.5

F4, F6

1. Outboard motor serial number location

1. Outboard motor serial number location

ZMU06705

1

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General information

10

EMU33523

Read manuals and labels Before operating or working on this outboard motor: Read this manual. Read any manuals supplied with the boat. Read all labels on the outboard motor and the boat. If you need any additional information, contact your Yamaha dealer. EMU33832

Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F2.5

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General information

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EMU44250

Contents of labels The above warning labels mean as follows. 1

WARNING EWM02730

Gasoline is highly flammable and explo- sive. Shut off engine before refueling. Tighten tank cap and air vent valve when not in use.

2

WARNING EWM01681

Keep hands, hair, and clothing away from rotating parts while the engine is running.

Do not touch or remove electrical parts when starting or during operation.

3

WARNING EWM01671

Read Owners Manuals and labels. Wear an approved personal flotation de-

vice (PFD). Attach engine shut-off cord (lanyard) to

your PFD, arm, or leg so the engine stops if you accidentally leave the helm, which could prevent a runaway boat.

ZMU05811

1 2

3

Gasoline is highly flammable and explosive. Shut off engine before refueling. Tighten tank cap and air vent valve when not in use.

YAMAHA 6S7-42698-60

WARNING

Lessence est extrmement inflammable et explosive. Areter le moteur avant de taire le plein de carburant. Fermer le capuchon du rservoir et la soupape de mise pression atmosphrique lorsquil nest pas utilis.

YAMAHA 6S7-42698-70

AVERTISSEMENT

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General information

12

EMU35132

Symbols The following symbols mean as follows.

Notice/Warning

Read Owners Manual

Hazard caused by continuous rotation

Electrical hazard

ZMU05696

ZMU05664

ZMU05665

ZMU05666

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13

EMU42710

Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F4, F6

4

3

1 2

ZMU06795

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ZMU06861

1 2

3 4

Gasoline is highly flammable and explosive. Shut off engine before refueling. Tighten tank cap and air vent valve when not in use.

YAMAHA 6S7-42698-60

WARNING

Lessence est extrmement inflammable et explosive. Areter le moteur avant de taire le plein de carburant. Fermer le capuchon du rservoir et la soupape de mise pression atmosphrique lorsquil nest pas utilis.

YAMAHA 6S7-42698-70

AVERTISSEMENT

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General information

15

EMU44260

Contents of labels The above warning labels mean as follows. 1

WARNING EWM01691

Emergency starting does not have start- in-gear protection. Ensure shift control is in neutral before starting engine.

2

WARNING EWM01681

Keep hands, hair, and clothing away from rotating parts while the engine is running.

Do not touch or remove electrical parts when starting or during operation.

3

WARNING EWM01671

Read Owners Manuals and labels. Wear an approved personal flotation de-

vice (PFD). Attach engine shut-off cord (lanyard) to

your PFD, arm, or leg so the engine stops if you accidentally leave the helm, which could prevent a runaway boat.

4

WARNING EWM02730

Gasoline is highly flammable and explo- sive. Shut off engine before refueling. Tighten tank cap and air vent valve when not in use.

EMU42750

Symbols The following symbols mean as follows.

Notice/Warning

Read Owners Manual

Hazard caused by continuous rotation

ZMU05696

ZMU05664

ZMU05665

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General information

16

Electrical hazard

ZMU05666

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Specifications and requirements

17

EMU38091

Specifications TIP: (AL) stated in the specification data below represents the numerical value for the alumi- num propeller installed. EMU2821S

Dimension and weight: Overall length:

F2.5MHA 623 mm (24.5 in) F4MHA 750 mm (29.5 in) F6MHA 750 mm (29.5 in)

Overall width: F2.5MHA 345 mm (13.6 in) F4MHA 403 mm (15.9 in) F6MHA 403 mm (15.9 in)

Overall height S: F2.5MHA 1021 mm (40.2 in) F4MHA 1040 mm (40.9 in) F6MHA 1040 mm (40.9 in)

Overall height L: F2.5MHA 1148 mm (45.2 in) F4MHA 1168 mm (46.0 in) F6MHA 1168 mm (46.0 in)

Motor transom height S: F2.5MHA 432 mm (17.0 in) F4MHA 440 mm (17.3 in) F6MHA 440 mm (17.3 in)

Motor transom height L: F2.5MHA 559 mm (22.0 in) F4MHA 568 mm (22.4 in) F6MHA 568 mm (22.4 in)

Dry weight (AL) S: F2.5MHA 17 kg (37 lb) F4MHA 27 kg (60 lb) F6MHA 27 kg (60 lb)

Dry weight (AL) L: F2.5MHA 18 kg (40 lb) F4MHA 28 kg (62 lb) F6MHA 28 kg (62 lb)

Performance: Full throttle operating range:

F2.5MHA 52505750 r/min F4MHA 40005000 r/min F6MHA 45005500 r/min

Rated power: F2.5MHA 1.8 kW (2.5 HP)

Rated power: F4MHA 2.9 kW (4 HP) F6MHA 4.4 kW (6 HP)

Idle speed (in neutral): F2.5MHA 1800-2000 r/min F4MHA 1450-1550 r/min F6MHA 1450-1550 r/min

Power unit: Type:

4-stroke OHV S1 2valves Total displacement:

F2.5MHA 72 cm (4.4 c.i.) F4MHA 139 cm (8.5 c.i.) F6MHA 139 cm (8.5 c.i.)

Bore stroke: F2.5MHA 54.0 31.5 mm (2.13 1.24 in) F4MHA 62.0 46.0 mm (2.44 1.81 in) F6MHA 62.0 46.0 mm (2.44 1.81 in)

Ignition system: F2.5MHA TCI F4MHA CDI F6MHA CDI

Spark plug (NGK): F2.5MHA BR6HS F4MHA CR6HSB F6MHA CR6HSB

Spark plug gap: 0.60.7 mm (0.0240.028 in)

Steering system: Tiller handle

Starting system: Manual starter

U6BV37E0.book Page 17 Wednesday, May 1, 2013 8:56 AM

Specifications and requirements

18

Starting carburetion system: Choke valve

Valve clearance IN (cold engine): 0.080.12 mm (0.00320.0047 in)

Valve clearance EX (cold engine): 0.080.12 mm (0.00320.0047 in)

Lower unit: Gear shift positions:

F2.5MHA Forward-neutral F4MHA Forward-neutral-reverse F6MHA Forward-neutral-reverse

Gear ratio: 2.08(27/13)

Trim and tilt system: Manual tilt

Propeller mark: F2.5MHA BS F4MHA BA F6MHA BA

Fuel and oil: Recommended fuel:

Regular unleaded gasoline Min. pump octane number (PON):

86 Fuel tank capacity:

F4MHA 12 L (3.17 US gal, 2.64 Imp.gal) F6MHA 12 L (3.17 US gal, 2.64 Imp.gal)

Fuel tank capacity (built in type): F2.5MHA 0.9 L (0.24 US gal, 0.20 Imp.gal) F4MHA 1.1 L (0.29 US gal, 0.24 Imp.gal) F6MHA 1.1 L (0.29 US gal, 0.24 Imp.gal)

Recommended engine oil: YAMALUBE 4M FC-W or 4-stroke outboard motor oil

Recommended engine oil grade 1: SAE 10W-30/10W-40/5W-30 API SE/SF/SG/SH/SJ/SL

Engine oil quantity: F2.5MHA 0.4 L (0.42 US qt, 0.35 Imp.qt) F4MHA 0.6 L (0.63 US qt, 0.53 Imp.qt) F6MHA 0.6 L (0.63 US qt, 0.53 Imp.qt)

Lubrication system: F2.5MHA Splash F4MHA Wet sump F6MHA Wet sump

Recommended gear oil: Yamalube Marine Gearcase Lube or Hypoid gear oil

Recommended gear oil grade: SAE 90 API GL-4

Gear oil quantity: F2.5MHA 0.075 L (0.079 US qt, 0.066 Imp.qt) F4MHA 0.100 L (0.106 US qt, 0.088 Imp.qt) F6MHA 0.100 L (0.106 US qt, 0.088 Imp.qt)

Tightening torque: Spark plug:

F2.5MHA 25 Nm (2.55 kgf-m, 18.4 ft-lb) F4MHA 13 Nm (1.33 kgf-m, 9.6 ft-lb) F6MHA 13 Nm (1.33 kgf-m, 9.6 ft-lb)

Engine oil drain bolt: 18 Nm (1.84 kgf-m, 13.3 ft-lb)

EMU33554

Installation requirements EMU33564

Boat horsepower rating

WARNING EWM01560

Overpowering a boat can cause severe in- stability.

Before installing the outboard motor(s), con- firm that the total horsepower of your out- board motor(s) does not exceed the boats maximum horsepower rating. See the boats capacity plate or contact the manufacturer.

U6BV37E0.book Page 18 Wednesday, May 1, 2013 8:56 AM

Specifications and requirements

19

EMU43000

Mounting the outboard motor F2.5

WARNING EWM01570

Improper mounting of the outboard mo- tor could result in hazardous conditions such as poor handling, loss of control, or fire hazards.

Because the motor is very heavy, spe- cial equipment and training is required to mount it safely.

Your dealer or other person experienced in proper rigging should mount the motor using correct equipment and complete rigging in- structions. For further information, see page 39. F4, F6

WARNING EWM02430

Improper mounting of the outboard motor could result in hazardous conditions, such as poor handling, loss of control, or fire hazards. If you are not able to mount the outboard motor properly, consult a Yamaha dealer.

To lift and mount the outboard motor, two people are necessary. For further information, see page 39. EMU34195

Propeller selection Next to selecting an outboard motor, selecting the right propeller is one of the most important purchasing decisions a boater can make. The type, size, and design of your propeller have a direct impact on acceleration, top speed, fuel economy, and even engine life. Yamaha designs and manufactures propellers for ev- ery Yamaha outboard motor and every appli- cation.

Your outboard motor came with a Yamaha propeller selected to perform well over a range of applications, but there may be uses where a different propeller would be more ap- propriate. Your Yamaha dealer can help you select the right propeller for your boating needs. Select a propeller that will allow the engine to reach the middle or upper half of the operating range at full throttle with the maximum boat- load. Generally, select a larger pitch propeller for a smaller operating load and a smaller pitch propeller for a heavier load. If you carry loads that vary widely, select the propeller that lets the engine run in the proper range for your maximum load but remember that you may need to reduce your throttle setting to stay within the recommended engine speed range when carrying lighter loads. To check the propeller, see page 88. F2.5

1. Propeller diameter in inches 2. Propeller pitch in inches 3. Type of propeller (propeller mark)

ZMU04604

-x 1 2 3

U6BV37E0.book Page 19 Wednesday, May 1, 2013 8:56 AM

Specifications and requirements

20

F4, F6

EMU39191

Start-in-gear protection (F4, F6) Yamaha outboard motors are equipped with start-in-gear protection device. This feature permits the engine to be started only when it is in neutral. Always select neutral before starting the engine. EMU39692

Engine oil requirements Select an oil grade according to the average temperatures in the area where the outboard motor will be used.

If oil grades listed under Recommended en- gine oil grade 1 are not available, select an al- ternative oil grade listed under Recommended engine oil grade 2. Recommended engine oil grade 1

Recommended engine oil grade 2

EMU36360

Fuel requirements EMU41331

Gasoline Use a good quality gasoline that meets the minimum octane requirement. If knocking or pinging occurs, use a different brand of gaso- line or premium unleaded fuel. Yamaha rec- ommends that you use alcohol-free gasoline (see Gasoline with Ethanol) whenever possi- ble. The use of a poor quality gasoline may result in starting and running problems. If you en- counter drivability problems, which you sus- pect could be related to the fuel you are using, we recommend that you switch to a recog- nized high quality brand of gasoline, such as

1. Propeller diameter in inches 2. Propeller pitch in inches 3. Type of propeller (propeller mark)

Recommended engine oil: YAMALUBE 4M FC-W or 4-stroke outboard motor oil

Recommended engine oil grade 1: SAE 10W-30/10W-40/5W-30 API SE/SF/SG/SH/SJ/SL

Recommended engine oil grade 2: SAE 15W-40/20W-40/20W-50 API SH/SJ/SL

Engine oil quantity: F2.5MHA 0.4 L (0.42 US qt, 0.35 Imp.qt) F4MHA 0.6 L (0.63 US qt, 0.53 Imp.qt) F6MHA 0.6 L (0.63 US qt, 0.53 Imp.qt)

ZMU06853

-x 1 2 3

ZMU06854

122F

50C

104

40

86

30

68

SAE API

SE SF SG SH SJ SL

20

50

10

32

0

14

-10

-4

-20

10W30

10W40

5W30

ZMU06855

122F

50C

104

40

86

30

68

SAE API

SH SJ SL

20

50

10

32

0

14

-10

-4

-20

15W40

20W40

20W50

U6BV37E0.book Page 20 Wednesday, May 1, 2013 8:56 AM

Specifications and requirements

21

a gasoline that is advertised as Top Tier De- tergent Gasoline. Failure to comply with these recommendations may also result in un- scheduled maintenance, fuel system dam- age, and internal engine damage.

NOTICE ECM01981

Do not use leaded gasoline. Leaded gas- oline can seriously damage the engine.

Avoid getting water and contaminants in the fuel tank. Contaminated fuel can cause poor performance or engine dam- age. Use only fresh gasoline that has been stored in clean containers.

Gasoline with Ethanol Two types of gasoline are commonly avail- able in the U.S.A. and Canada for use in au- tomobiles and boats: conventional gasoline without Ethanol and gasoline with Ethanol, which is typically referred to as E10 gasoline. According to federal regulations, E10 gaso- line may contain up to 10% Ethanol. A high quality gasoline without Ethanol is the preferred fuel for your Yamaha outboard mo- tor. However, if gasoline with Ethanol is the only fuel available in your area, your Yamaha outboard motor is calibrated to run properly on fresh E10 gasoline that meets the mini- mum octane requirement specified for this model.

NOTICE ECM02401

Never use a gasoline for your outboard motor that contains more than 10% Etha- nol, such as E15 which contains 15% Eth- anol or E85 which contains 85% Ethanol,

or gasoline containing any amount of Methanol. These fuels can cause starting and running problems, as well as serious fuel system and internal engine damage.

Gasoline containing ethanol has several properties that may cause boat fuel system problems. Ethanol is a strong solvent (cleaning agent)

that can clean gum and varnish deposits from a boats fuel system, particularly in old- er boats, as well as tanks and pipes used in gasoline distribution. These released de- posits contaminate the fuel and can cause problems, such as clogged fuel filters, car- buretors, or fuel injectors, which could re- sult in engine damage.

Ethanol may dissolve resins used in the construction of fiberglass fuel tanks. The dissolved resins contaminate the fuel and can cause problems, such as clogged fuel filters, carburetors, or fuel injectors, which could result in engine damage.

Ethanol is hygroscopic (has a strong attrac- tion to water). Therefore, any water that in- advertently enters the fuel system, including moisture that is absorbed from the air, will mix with the ethanol in the gasoline. If the amount of water is excessive, the eth- anol and water mixture will separate from the gasoline in a layer at the bottom of the fuel tank. This ethanol and water mixture is very corrosive to aluminum fuel tanks and fuel system components.

The usable life span of E10 gasoline may be shorter than the normal length of off-sea- son boat storage, causing starting and run- ning problems related to stale fuel.

For more information on using fuel containing ethanol, visit: http://www.yamaha-motor.com

Recommended fuel: Regular unleaded gasoline

Min. pump octane number (PON): 86

U6BV37E0.book Page 21 Wednesday, May 1, 2013 8:56 AM

Specifications and requirements

22

Gasoline Filtration Yamaha outboard motors are equipped with internal fuel filters. However, excessive water or debris entering your engines fuel system could prematurely clog the internal filters, causing starting and running problems, fuel system damage, and internal engine damage. Therefore, it is recommended that an external 10-micron water-separating fuel filter be in- stalled on your boat and serviced frequently. Consult your authorized Yamaha dealer for a 10-micron filter that meets your engines re- quirements. EMU41341

Gasoline Additives Gasoline blends change to meet automobile emission regulations and economic condi- tions. Additives, added by gasoline distribu- tors, necessary for proper automobile engine operation and durability, may not be sufficient for typical boat applications. Intake valve and combustion chamber deposits may accumu- late in boat engines more rapidly than en- countered in automotive use. In addition, gasoline used for boating will typically age longer between refills than gasoline used in automobiles, resulting in stale and unusable gasoline that may cause starting and running problems, fuel system damage, and internal engine damage. Yamaha recommends the use of two Ya- malube gasoline additives to reduce internal deposits and extend the storage life of gaso- line. Continuous use of Yamalube Ring Free Fuel Additive Plus reduces harmful internal deposits. Yamalube Fuel Stabilizer & Condi- tioner Plus added to fresh gasoline will help protect the fuel system from varnishing while helping to keep the gasolines octane level from decreasing excessively during storage. Other additives may also be available on the market that may have varying degrees of ef-

fectiveness. Consult your Yamaha dealer concerning what may work best for the locally available gasoline and environmental condi- tions. EMU36880

Muddy or acidic water Yamaha strongly recommends that you have your dealer install the optional chromium-plat- ed water pump kit if you use the outboard mo- tor in muddy or acidic water conditions. However, depending on the model it might not be required. EMU41350

Anti-fouling paint A clean hull is required to maintain your boats performance. Boats moored in the water should be protected from marine growth (bar- nacles, mussels, and marine plants). If ap- proved by regulations for your area, the bottom of the hull can be coated with an anti- fouling paint to inhibit marine growth. Anti-fouling paints specifically formulated for use on aluminum may be applied to the out- board motor. The original Yamaha paint sur- face may be scuffed lightly before applying anti-fouling paint, but do not remove the origi- nal paint. Removal of the original paint will in- crease the rate of corrosion.

NOTICE ECM02410

Anti-fouling paint for fiberglass and wood may contain materials, such as copper, graphite, and tin, that can cause corrosion if applied to aluminum boats and outboard motor components. Never apply these types of paint to your outboard motor be- cause rapid corrosion damage could oc- cur.

Sacrificial anodes are attached to the out- board motor to provide corrosion protection and must never be painted.

U6BV37E0.book Page 22 Wednesday, May 1, 2013 8:56 AM

Specifications and requirements

23

NOTICE ECM02420

Painted sacrificial anodes will not provide corrosion protection.

EMU36341

Motor disposal requirements Never illegally discard (dump) the motor. Yamaha recommends consulting the dealer about discarding the motor. EMU36352

Emergency equipment Keep the following items onboard in case there is trouble with the outboard motor. A tool kit with assorted screwdrivers, pliers,

wrenches (including metric sizes), and electrical tape.

Waterproof flashlight with extra batteries. An extra engine shut-off cord (lanyard) with

clip. Spare parts, such as an extra set of spark

plugs. Consult your Yamaha dealer for details. EMU25222

Emission control information EMU25230

North American models This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for ma- rine SI engines. See the label affixed to your engine for details. EMU25243

Approval label of emission control certifi- cate This label is attached to the bottom cowling. New Technology; (4-stroke/HPDI) EM

F2.5

F4, F6

1. Approval label location

1. Approval label location

ZMU07685

EMISSION CONTROL INFORMATION EM

YAMAHA MOTOR CO.,LTD.

THIS ENGINE CONFORMS TO U.S. EPA EXHAUST REGULATIONS FOR SI MARINE ENGINES. REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS. MEETS U.S. EPA EVAP STANDARDS.

FAMILY : FELs(HC+NOx / CO): / g/kW-hr DISPLACEMENT : liters MAX POWER : kW CERTIFIED COMPONENTS :

INFORMATION ANTIPOLLUTION EM

YAMAHA MOTOR CO.,LTD.

CE MOTEUR EST CONFORME AUX NORMES DMISSIONS EPA DES .-U. POUR MOTEURS MARINS TINCELLE. POUR LES SPCIFICATIONS ET LES RGLAGES EFFECTUER, CONSULTEZ LE MANUEL DU PROPRITAIRE. IL SATISFAIT AUX NORMES EVAP EPA DES .-U.

FAMILLE : FELs(HC+NOx / CO): / g/kW-h CYLINDRE : litre PUISS. MAX. : kW COMPOSANTS CERTIFIS :

ZMU07064

1

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Specifications and requirements

24

EMU39201

Manufactured date label This label is attached to the clamp bracket. F2.5

F4, F6

EMU25274

Star labels Your outboard motor is labeled with a Califor- nia Air Resources Board (CARB) star label. See below for a description of your particular label. F2.5

F4, F61. Manufactured date label location

1. Manufactured date label location

ZMU07605

ZMU06712

1

1. Star labels location

1. Star labels location

Manufactured:

ZMU04346

ZMU06713

1

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Specifications and requirements

25

EMU40330

One StarLow Emission The one-star label identifies engines that meet the Air Resources Boards Personal Watercraft and Outboard marine engine 2001 exhaust emission standards. Engines meet- ing these standards have 75% lower emis- sions than conventional carbureted two- stroke engines. These engines are equivalent to the U.S. EPAs 2006 standards for marine engines.

EMU40340

Two StarsVery Low Emission The two-star label identifies engines that meet the Air Resources Boards Personal Water- craft and Outboard marine engine 2004 ex- haust emission standards. Engines meeting these standards have 20% lower emissions than One Star-Low-Emission engines.

EMU40350

Three StarsUltra Low Emission The three-star label identifies engines that meet the Air Resources Boards Personal Watercraft and Outboard marine engine 2008 exhaust emission standards or the Sterndrive and Inboard marine engine 2003-2008 ex- haust emission standards. Engines meeting these standards have 65% lower emissions than One Star-Low-Emission engines.

EMU33861

Four StarsSuper Ultra Low Emission The four-star label identifies engines that meet the Air Resources Boards Sterndrive and Inboard marine engine 2009 exhaust emission standards. Personal Watercraft and Outboard marine engines may also comply with these standards. Engines meeting these standards have 90% lower emissions than One Star-Low-Emission engines.

ZMU01702

ZMU01703

ZMU01704

ZMU05663

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Components

26

EMU2579Y

Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all models (order from dealer). F2.5

ZMU07612

13

12

11

1. Top cowling 2. Cowling lock lever(s) 3. Carrying handle 4. Steering friction adjuster 5. Anti-cavitation plate 6. Propeller 7. Cooling water inlet 8. Trim rod 9. Clamp bracket 10.Tiller handle 11.Air vent valve 12.Fuel tank cap 13.Manual starter handle 14.Throttle friction adjuster 15.Engine stop button/Engine shut-off switch

16.Clamp screw 17.Restraint cable attachment 18.Gear shift lever 19.Choke knob

U6BV37E0.book Page 26 Wednesday, May 1, 2013 8:56 AM

Components

27

F4, F6

ZMU07495

1 2

3

11

12 13

1514

21 19 18

20 16 22

23 24

25

4

26

5

6

8

7

9

10

17

1. Top cowling 2. Cowling lock lever 3. Carrying handle 4. Anti-cavitation plate 5. Propeller* 6. Cooling water inlet 7. Trim rod 8. Clamp bracket 9. Steering friction adjuster 10.Fuel tank cap 11.Air vent valve 12.Manual starter handle 13.Throttle friction adjuster 14.Tiller handle 15.Throttle grip 16.Fuel joint 17.Fuel joint cap 18.Fuel cock 19.Engine shut-off cord (lanyard) 20.Engine stop button/Engine shut-off switch 21.Choke knob

22.Clamp screw 23.Restraint cable attachment 24.Tilt support bar 25.Gear shift lever 26.Fuel tank*

U6BV37E0.book Page 27 Wednesday, May 1, 2013 8:56 AM

Components

28

EMU44002

Fuel tank (built-in fuel tank) (F2.5) This outboard motor is equipped with a built- in fuel tank and its parts are as follows.

Fuel tank cap This cap seals the fuel tank. When the cap is removed, the tank can be filled with fuel. To remove the cap, turn it counterclockwise. Air vent valve This valve is on the fuel tank cap. To open the air vent valve, align the pointer on the air vent valve with the ON position.

To close the air vent valve, align the pointer on the air vent valve with the OFF position.

EMU44013

Fuel tank (built-in fuel tank) (F4, F6) This outboard motor is equipped with a built- in fuel tank and its parts are as follows.

Fuel tank cap This cap seals the fuel tank. When the cap is removed, the tank can be filled with fuel. To remove the cap, turn it counterclockwise. Air vent valve This valve is on the fuel tank cap. To open the air vent valve, align the pointer on the air vent valve with the OPEN position.

1. Air vent valve 2. Fuel tank cap 3. Built-in fuel tank

1. Air vent valve 2. Pointer 3. ON position

3

1 2

ZMU07613

3

1

2

ZMU07618

1. Air vent valve 2. Pointer 3. OFF position

1. Air vent valve 2. Fuel tank cap 3. Built-in fuel tank

2

1

3

ZMU07619

ZMU07614

1

2

3

U6BV37E0.book Page 28 Wednesday, May 1, 2013 8:56 AM

Components

29

To close the air vent valve, align the pointer on the air vent valve with the CLOSE posi- tion.

EMU43102

Fuel tank (portable fuel tank) (F4, F6) This model can be equipped with an optional portable fuel tank. The parts of the fuel tank are as follows.

WARNING EWM00020

The fuel tank supplied with this engine is its dedicated fuel reservoir and must not be used as a fuel storage container. Com-

mercial users should conform to relevant licensing or approval authority regula- tions.

Fuel joint This joint is used to connect the fuel line. Fuel gauge This gauge shows the approximate amount of fuel remaining in the fuel tank. Pressure relief tab This tab is attached to the filler hole of the fuel tank. Fuel tank cap This cap seals the fuel tank. To loosen the cap, press and hold the pressure relief tab and turn the cap counterclockwise. Air vent screw This screw is on the fuel tank cap. When turn- ing the air vent screw counterclockwise, it is loosened and the pressure in the fuel tank is released to a certain pressure. Air is allowed to enter the fuel tank while operating the en- gine.

1. Air vent valve 2. Pointer 3. OPEN position

1. Air vent valve 2. Pointer 3. CLOSE position

ZMU07620

1 2

3

ZMU07621

1 2

3

1. Fuel joint 2. Fuel gauge 3. Pressure relief tab 4. Fuel tank cap 5. Air vent screw

ZMU07460

2 4 5

3

1

3

U6BV37E0.book Page 29 Wednesday, May 1, 2013 8:56 AM

Components

30

EMU42990

Fuel cock F2.5 The fuel cock turns on and off the supply of fuel from the fuel tank to the engine.

F4, F6 The fuel cock turns on and off the supply of fuel from the fuel tank to the engine. The fuel cock has 3 positions: the closed po- sition, built-in fuel tank position, and portable fuel tank position. Depending on how the out- board motor will be used, align the fuel cock with the appropriate position indicated on the label that is affixed to the outboard motor.

EMU42800

Close F2.5 To stop fuel flow to the engine, turn the lever or knob to close position. Always turn the lever or knob to close position when the engine is not running.

F4, F6 To stop the fuel flow from the fuel tank to the carburetor, align the fuel cock with the closed position. When the engine is not running, always align the fuel cock with the closed position.

EMU42810

Open F2.5 With the lever/knob in this position, fuel flows to the carburetor. Normal running is done with the lever/knob in this position.

1. Fuel cock

1. Fuel cock 2. Closed position 3. Built-in fuel tank position 4. Portable fuel tank position

ZMU06880

1 3

24

1. Close position

1. Fuel cock 2. Closed position

ZMU06883 1

2

U6BV37E0.book Page 30 Wednesday, May 1, 2013 8:56 AM

Components

31

F4, F6 To send fuel from the fuel tank to the carbure- tor, align the fuel cock with the position for the built-in fuel tank or portable fuel tank accord- ing to which fuel tank is being used. When using the built-in fuel tank, align the fuel cock with the built-in fuel tank position. When using a portable fuel tank, align the fuel cock with the portable fuel tank position.

EMU25913

Tiller handle To change direction, move the tiller handle to the left or right as necessary.

F2.5

F4, F6

EMU42540

Gear shift lever F2.5 Pulling the gear shift lever towards you puts the engine in forward gear so that the boat moves ahead.

1. Open position

1. Fuel cock 2. Built-in fuel tank position 3. Portable fuel tank position

ZMU06882

12

3

1. Tiller handle

1. Tiller handle

1. Forward 2. Neutral

1

ZMU07358

ZMU06721

1

U6BV37E0.book Page 31 Wednesday, May 1, 2013 8:56 AM

Components

32

F4, F6 Move the gear shift lever forward to engage the forward gear or rearward to engage the reverse gear.

EMU25942

Throttle grip The throttle grip is on the tiller handle. Turn the grip counterclockwise to increase speed and clockwise to decrease speed. F2.5

F4, F6

EMU39711

Throttle indicator The throttle indicator shows the throttle posi- tion. When the 100% position of the throttle in- dicator is aligned with the notch in the tiller handle, the throttle is fully open. When the 0% position of the throttle indicator is aligned with the notch in the tiller handle, the throttle is fully closed.

The engine start mark on the throttle indi- cator shows the throttle position for starting the engine.

1. Forward position 2. Neutral position 3. Reverse position

1. Throttle grip

123

ZMU06864

1

ZMU07359

1. Throttle grip

1. Fully open 2. Fully closed 3. Throttle indicator 4. Notch

1

ZMU07360

ZMU06877

0 % 100

1 2

3

4 4

3

U6BV37E0.book Page 32 Wednesday, May 1, 2013 8:56 AM

Components

33

EMU39243

Throttle friction adjuster The throttle friction adjuster provides adjust- able resistance when the throttle grip is turned, and can be set according to operator preference. To increase resistance, turn the throttle fric- tion adjuster clockwise. To decrease resistance, turn the throttle fric- tion adjuster counterclockwise. When con- stant speed is desired, tighten the throttle friction adjuster to maintain the desired throt- tle setting. WARNING! Do not overtighten the throttle friction adjuster. If there is too much resistance, it could be difficult to turn the throttle grip, which could result in an accident. [EWM02261]

F2.5

F4, F6

EMU25995

Engine shut-off cord (lanyard) and clip The clip must be attached to the engine shut- off switch for the engine to run. The cord should be attached to a secure place on the operators clothing, or arm or leg. Should the operator fall overboard or leave the helm, the cord will pull out the clip, stopping ignition to the engine. This will prevent the boat from running away under power. WARNING! At- tach the engine shut-off cord to a secure place on your clothing, or your arm or leg while operating. Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning. Avoid acci- dentally pulling the cord during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and ob- jects in the boat to be thrown forward. [EWM00122]

1. Start mark 2. Notch

1. Throttle friction adjuster

ZMU06808

12

1

ZMU07361

1. Throttle friction adjuster

ZMU06724

1

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Components

34

F2.5

F4, F6

EMU26003

Engine stop button The engine stop button stops the engine when the button is pushed.

F2.5

F4, F6

EMU26013

Choke knob for pull type To supply the engine with the rich fuel mixture required to start, pull out this knob. F2.5

1. Clip 2. Cord 3. Engine shut-off switch

1. Engine shut-off switch 2. Cord 3. Clip

ZMU06725

1

3

2

1. Engine stop button

1. Engine stop button

1. Choke knob

1 ZMU07362

ZMU06726

1

1 ZMU07363

U6BV37E0.book Page 34 Wednesday, May 1, 2013 8:56 AM

Components

35

F4, F6

EMU39723

Fuel joint cap (F4, F6) The fuel joint is equipped with the fuel joint cap. WARNING! When not using a portable fuel tank, make sure to install the fuel joint cap. Otherwise, injury could result from strik- ing the fuel joint accidentally. [EWM02411]

EMU26074

Manual starter handle The manual starter handle is used to crank and start the engine.

F2.5

F4, F6

EMU42820

Steering friction adjuster

WARNING EWM02270

Do not overtighten the steering friction ad- juster. If there is too much resistance, it could be difficult to steer, which could re- sult in an accident.

The steering friction adjuster provides adjust- able resistance to the steering mechanism, and can be set according to operator prefer- ence. The steering friction adjuster is located on the swivel bracket or on the port side of the outboard motor.

1. Choke knob

1. Fuel joint cap

ZMU06784

1

ZMU06868

1

1. Manual starter handle

1. Manual starter handle

1

ZMU07364

ZMU06728

1

U6BV37E0.book Page 35 Wednesday, May 1, 2013 8:56 AM

Components

36

F2.5

F4, F6

To increase resistance, turn the steering fric- tion adjuster clockwise. To decrease resistance, turn the steering fric- tion adjuster counterclockwise. EMU40101

Trim rod (tilt pin) The trim rod (tilt pin) is used to adjust the trim angle of the outboard motor in relation to the angle of the boat transom.

F2.5

F4, F6

EMU39363

Tilt lock mechanism (F4, F6) The tilt lock mechanism is used to prevent the outboard motor from lifting out of the water when the gear shift lever is in the reverse po- sition. When the gear shift lever is moved to the re- verse position, the tilt lock mechanism oper- ates to prevent the outboard motor from being tilted up.

1. Steering friction adjuster

1. Steering friction adjuster

1

ZMU07365

ZMU06729 1

1. Trim rod

1. Trim rod

1 ZMU07366

ZMU06843 1

U6BV37E0.book Page 36 Wednesday, May 1, 2013 8:56 AM

Components

37

When the gear shift lever is moved to the neu- tral position or forward position, the outboard motor can be tilted up. EMU39832

Tilt support bar (F4, F6) Use the tilt support bar to keep the outboard motor in the tilted up position or a shallow wa- ter cruising position.

EMU42600

Tilt support lever (F2.5) To keep the outboard motor in the tilted up po- sition, lock the tilt support lever to the clamp bracket.

NOTICE ECM00660

Do not use the tilt support lever or knob when trailering the boat. The outboard mo- tor could shake loose from the tilt support and fall. If the motor cannot be trailered in the normal running position, use an addi- tional support device to secure it in the tilt position.

EMU39263

Cowling lock lever The cowling lock lever(s) is used to secure the top cowling.

1. Gear shift lever 2. Reverse position

1. Tilt lock

ZMU06838

12

1

1

ZMU06839

1. Tilt support bar 2. Tilted up position 3. Shallow water cruising position

ZMU06731

1

2

3

U6BV37E0.book Page 37 Wednesday, May 1, 2013 8:56 AM

Components

38

F2.5

F2.5

F4, F6

EMU42850

Carrying handle F2.5 A carrying handle is provided on the rear of the outboard motor. It enables you to carry the outboard motor easily with one hand.

F4, F6 The carrying handle is used to carry the out- board motor. For information on carrying and transporting the outboard motor, see page 70.

1. Cowling lock lever

1. Cowling lock lever

1. Cowling lock lever

1

ZMU07367

1

ZMU07368

ZMU06850

1

1. Carrying handle

1. Carrying handle

1

ZMU07369

ZMU06787

1

U6BV37E0.book Page 38 Wednesday, May 1, 2013 8:56 AM

Installation

39

EMU39731

Installation The information presented in this section is in- tended as reference only. It is not possible to provide complete instructions for every possi- ble boat and motor combination. Proper mounting depends in part on experience and the specific boat and motor combination.

WARNING EWM02341

Overpowering a boat could cause se- vere instability. Do not mount an out- board motor with more horsepower than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat manufacturer.

Improper mounting of the outboard mo- tor could result in hazardous conditions, such as poor handling, loss of control, or fire hazards. If you are not able to mount the outboard motor properly, consult a Yamaha dealer.

EMU42940

Mounting the outboard motor F2.5

WARNING EWM01720

Your dealer or other person experienced in proper outboard motor mounting should show you how to mount your out- board motor.

The outboard motor should be mounted so that the boat is well balanced. Otherwise, the boat could be hard to steer. For single-engine boats, mount the outboard motor on the cen- terline (keel line) of the boat.

F4, F6

WARNING EWM02300

Do not hold the top cowling or tiller handle when mounting or dismounting the out- board motor. Otherwise, the outboard mo- tor could fall.

1. Be sure to mount the outboard motor while the boat is on land. If the boat is on the water, move it to an area on land.

2. To prevent steering movement, turn the steering friction adjuster clockwise.

3. Turn the tiller handle 180 so that it is pointing rearward.

1. Center line (keel line)

1. Steering friction adjuster

ZMU017601

ZMU06827

1

U6BV37E0.book Page 39 Wednesday, May 1, 2013 8:56 AM

Installation

40

4. Hold the carrying handle and the hand- grip on the front side of the bottom cowl- ing and lift up the outboard motor using two people.

5. Mount the outboard motor on the center line (keel line) of the boat, and ensure that the boat itself is well balanced. Oth- erwise the boat will be hard to steer. For boats without a keel or which are asym- metrical, consult your dealer.

6. Turn the steering friction adjuster coun- terclockwise to set the steering friction according to operator preference. WARNING! If there is too much resis- tance it could be difficult to steer, which could result in an accident. [EWM00721]

EMU39741

Mounting height To run your boat at optimum efficiency, the water resistance (drag) of the boat and out- board motor must be made as little as possi- ble. The mounting height of the outboard motor greatly affects the water resistance. If

1. Carrying handle 2. Handgrip

ZMU06836

ZMU068211 2

ZMU06835

1. Center line (keel line)

1. Steering friction adjuster

ZMU017601

ZMU06834

1

U6BV37E0.book Page 40 Wednesday, May 1, 2013 8:56 AM

Installation

41

the mounting height is too high, cavitation tends to occur, thus reducing the propulsion; and if the propeller tips cut the air, the engine speed will rise abnormally and cause the en- gine to overheat. If the mounting height is too low, the water resistance will increase and thereby reduce engine efficiency. Mount the outboard motor so that the anti-cavitation plate is between the bottom of the boat and a level 25 mm (1 in) below it. F2.5

F4, F6

NOTICE ECM02170

Check that the idle hole stays high enough to keep out water getting inside engine even if the boat is in stationary with maximum load.

Incorrect engine height or obstructions to the smooth flow of water (such as the design or condition of the boat) can cre- ate airborne water spray while the boat is cruising. If the motor is operated con- tinuously in the presence of airborne water spray, enough water could enter the engine through the intake opening on the top cowling to cause severe en- gine damage. Eliminate the cause of the airborne water spray.

TIP: The optimum mounting height of the out-

board motor is affected by the boat and mo- tor combination and the desired use. Test runs at different heights can help determine the optimum mounting height. Consult your Yamaha dealer or boat manufacturer for further information on determining the prop- er mounting height.

For instructions on setting the trim angle of the outboard motor, see page 62.

EMU39752

Clamping the outboard motor 1. Place the outboard motor on the transom

so that it is positioned as close to the cen- ter as possible. Tighten the clamp screws evenly and securely. Occasionally check the clamp screws for tightness during op- eration of the outboard motor because they could become loose due to engine vibration. WARNING! Loose clamp screws could allow the outboard mo- tor to fall off or move on the transom. This could cause loss of control and serious injury. Make sure the clamp screws are tightened securely. Occa- sionally check the screws for tight- ness during operation. [EWM00642]

1. Idle hole 2. Anti-cavitation plate

1. Idle hole 2. Anti-cavitation plate

025mm (01in)

2

1

ZMU07370

ZMU06796

0-25 mm (0-1 in) 2

1

U6BV37E0.book Page 41 Wednesday, May 1, 2013 8:56 AM

Installation

42

2. Attach one end to the restraint cable at- tachment and the other to a secure mounting point on the boat. Otherwise the engine could be completely lost if it accidentally falls off the transom.

F2.5

F4, F6

1. Clamp screw

1. Restraint cable attachment

1. Restraint cable attachment

ZMU068111

ZMU07509

1

ZMU06812

1

U6BV37E0.book Page 42 Wednesday, May 1, 2013 8:56 AM

Operation

43

EMU36381

First-time operation EMU36391

Fill engine oil The engine is shipped from the factory without engine oil. If your dealer did not fill the oil, you must fill it before starting the engine. NOTICE: Check that the engine is filled with oil be- fore first-time operation to avoid severe engine damage. [ECM01781]

The engine is shipped with the following stick- er, which should be removed after engine oil is filled for the first time. For more information on checking the engine oil level, see page 45.

EMU30174

Breaking in engine Your new engine requires a period of break-in to allow mating surfaces of moving parts to wear in evenly. Correct break-in will help en- sure proper performance and longer engine life. NOTICE: Failure to follow the break-in procedure could result in reduced engine life or even severe engine damage. [ECM00801]

EMU40060

Procedure for 4-stroke models Your new engine requires a period of 10 hours break-in to allow mating surfaces of moving parts to wear in evenly.

TIP: Run the engine in the water, under load (in gear with a propeller installed) as follows. For 10 hours for breaking in engine avoid extend- ed idling, rough water and crowded areas.

1. For the first hour of operation: Run the engine at varying speeds up to 2000 r/min or approximately half throttle.

2. For the second hour of operation: Run the engine at 3000 r/min or at ap- proximately three-quarter throttle.

3. Remaining 8 hours: Run the engine at any speed. However, avoid operating at full throttle for more than 5 minutes at a time.

4. After the first 10 hours: Operate the engine normally.

EMU36400

Getting to know your boat Different boats handle differently. Operate cautiously while you learn how your boat han- dles under different conditions and with differ- ent trim angles (see page 62). EMU36413

Checks before starting engine

WARNING EWM01921

If any item in Checks before starting en- gine is not working properly, have it in- spected and repaired before operating the outboard motor. Otherwise, an accident could occur.

NOTICE ECM00120

Do not start the engine out of water. Over- heating and serious engine damage can occur.

EMU36560

Fuel level Be sure you have plenty of fuel for your trip. A good rule is to use 1/3 of your fuel to get to the destination, 1/3 to return, and to keep 1/3 as an emergency reserve. With the boat level on a trailer or in the water, check the fuel level. For fuel filling instructions, see page 48.

ZMU01710

U6BV37E0.book Page 43 Wednesday, May 1, 2013 8:56 AM

Operation

44

EMU43710

Remove the top cowling For the following checks, remove the top cowling from the bottom cowling. To remove the top cowling, pull the cowling lock lever(s) up and lift up the top cowling. F2.5

F2.5

F4, F6

EMU36442

Fuel system

WARNING EWM00060

Gasoline and its vapors are highly flam- mable and explosive. Keep away from sparks, cigarettes, flames, or other sourc- es of ignition.

WARNING EWM00910

Leaking fuel can result in fire or explosion. Check for fuel leakage regularly. If any fuel leakage is found, the fuel sys-

tem must be repaired by a qualified me- chanic. Improper repairs can make the outboard unsafe to operate.

EMU36451

Check for fuel leaks Check for fuel leaks or gasoline fumes in

the boat. Check for fuel leakage from the fuel system. Check the fuel tank and fuel lines for

cracks, swellings, or other damages. EMU42970

Controls F2.5 Move the tiller handle fully to the left and

right to make sure operation is smooth. Turn the throttle grip from the fully closed to

the fully open position. Make sure that it turns smoothly and that it completely re- turns to the fully closed position.

Look for loose or damaged connections of the throttle and shift cables.

F4, F6 Move the tiller handle fully to the left and

right to check that operation is smooth. Turn the throttle grip from the fully closed

position to the fully open position. Check that the throttle grip turns smoothly and that it completely returns to the fully closed posi- tion.

1. Cowling lock lever

1. Cowling lock lever

1. Cowling lock lever

1

ZMU07486

1

ZMU07487

ZMU06732

1

U6BV37E0.book Page 44 Wednesday, May 1, 2013 8:56 AM

Operation

45

Check the throttle cable and throttle link for loose or damaged connections.

Check the shift link and start-in-gear protec- tion cable for loose or damaged connec- tions.

EMU36483

Engine shut-off cord (lanyard) Inspect the engine shut-off cord and clip for damage, such as cuts, breaks, and wear.

EMU42860

Engine oil F2.5 1. Put the outboard motor in an upright po-

sition (not tilted). 2. Remove the top cowling. 3. Check the oil level using the oil level

check window to be sure the level falls between the upper and lower marks. Fill with oil if it is below the lower mark, or drain to the specified level if it is above the upper mark.

ZMU06851

ZMU06852

ZMU06874

1. Clip 2. Cord

1. Oil level check window 2. Upper mark 3. Lower mark

ZMU06873

1

2

ZMU02346

1

2 3

U6BV37E0.book Page 45 Wednesday, May 1, 2013 8:56 AM

Operation

46

F4, F6 1. Place the outboard motor in an upright

position (not tilted). NOTICE: If the mo- tor is not level, the oil level indicated on the dipstick may not be accurate. [ECM01790]

2. Remove the oil filler cap and wipe the at- tached oil dipstick clean.

TIP: The oil lubrication check window does not in- dicate the engine oil level. Use the oil lubrica- tion check window to make sure that the engine is being lubricated with oil while it is running. 3. Install the oil filler cap and tighten it com-

pletely. 4. Remove the oil filler cap again and check

that the oil level on the dipstick is be- tween the upper and lower marks. If the oil level is not at the proper level, add or extract oil until the oil is between the up- per and lower marks.

5. Install the oil filler cap and tighten it com- pletely.

EMU27153

Engine Check the engine and engine mounting. Look for loose or damaged fasteners. Check the propeller for damage. Check for engine oil leaks. EMU42980

Installing top cowling F2.5 1. Be sure that all cowling lock levers are re-

leased. 2. Be sure that the rubber seal is seated all

the way around the engine. 3. Place the cowling on top of the seal. 4. Check to be sure it fits properly in the rub-

ber seal. 5. Move the levers to lock the cowling as

shown. NOTICE: If the top cowling is not installed correctly, water spray un- der the top cowling can damage the engine, or the top cowling can blow off at high speeds. [ECM01991]

1. Oil filler cap 2. Oil lubrication check window

ZMU06769

1 2 1. Oil dipstick 2. Upper mark 3. Lower mark

1

2 3

ZMU06737

U6BV37E0.book Page 46 Wednesday, May 1, 2013 8:56 AM

Operation

47

After installing, check the fitting of the top cowling by pushing it with both hands. If the top cowling is loose, have it repaired by your Yamaha dealer.

F4, F6 1. Check the rubber seal for damage. If the

rubber seal is damaged, have it replaced by a Yamaha dealer.

2. Align the fuel tank cap and manual starter handle with their respective holes in the top cowling.

3. Hook the top cowling hook onto the bot- tom cowling, and then make sure that the fuel tank cap and manual starter handle fit properly into their respective holes.

4. Check to be sure the rubber seal is seat- ed correctly between the top cowling and the bottom cowling.

5. Pull the cowling lock lever down to secure the top cowling.

ZMU06128

ZMU06130

1. Fuel tank cap 2. Manual starter handle 3. Rubber seal

1. Hook

ZMU07615

1

2

3

ZMU06857

1

U6BV37E0.book Page 47 Wednesday, May 1, 2013 8:56 AM

Operation

48

6. Check the fitting of the top cowling by pushing it with both hands. NOTICE: If the top cowling is not installed cor- rectly, water spray under the top cowl- ing can damage the engine, or the top cowling can blow off at high speeds. [ECM01991]

EMU43463

Filling fuel

WARNING EWM01950

Be sure the outboard motor is securely fastened to the transom or a stable stand.

WARNING EWM01830

Gasoline and its vapors are highly flam- mable and explosive. Always refuel ac- cording to this procedure to reduce the risk of fire and explosion.

Gasoline is poisonous and can cause in- jury or death. Handle gasoline with care. Never siphon gasoline by mouth. If you should swallow some gasoline or inhale a lot of gasoline vapor, or get some gas- oline in your eyes, see your doctor im- mediately. If gasoline spills on your skin, wash with soap and water. If gaso- line spills on your clothing, change your clothes.

Before refueling, check the following points: Securely moor the boat in a well-ventilated

area and stop the engine. If the boat is trail- ered, make sure that it is stable.

Do not smoke and keep away from sparks, flames, static electric discharge, or other sources of ignition.

If you use a portable container to store and dispense fuel, only use a locally approved GASOLINE container.

To prevent electrostatic sparks, discharge any built-up static electricity from your body before refueling.

Filling fuel for built-in fuel tank 1. Remove the fuel tank cap. F2.5

1. Cowling lock lever

ZMU06738

1

ZMU06739

1. Fuel tank cap

ZMU07622

1

U6BV37E0.book Page 48 Wednesday, May 1, 2013 8:56 AM

Operation

49

F4, F6

2. Fill the fuel tank, but do not overfill it. WARNING! Do not overfill. Otherwise fuel can expand and overflow if the temperature increases. [EWM02610]

F2.5

F4, F6

3. Tighten the fuel tank cap until a click is heard.

4. Wipe up any spilled gasoline immediately with dry rags. Dispose of rags properly according to local laws or regulations. If you use a portable container to store and dispense fuel, only use a locally ap- proved GASOLINE container.

Filling fuel for portable fuel tank (optional) (F4, F6) 1. Disconnect the fuel hose from the fuel

joint on the fuel tank.

2. Turn the air vent screw clockwise to close it.

1. Fuel tank cap

ZMU07616

1

ZMU07623

ZMU07617

Fuel tank capacity (built in type): F2.5MHA 0.9 L (0.24 US gal, 0.20 Imp.gal) F4MHA 1.1 L (0.29 US gal, 0.24 Imp.gal) F6MHA 1.1 L (0.29 US gal, 0.24 Imp.gal)

1. Fuel joint 2. Fuel hose

ZMU07443

2 1

U6BV37E0.book Page 49 Wednesday, May 1, 2013 8:56 AM

Operation

50

3. Remove the fuel tank from the boat. 4. To loosen the air vent screw, turn it coun-

terclockwise until it stops.

5. While pressing and holding the pressure relief tab under the fuel tank cap, slowly turn the fuel tank cap counterclockwise 1/4 turn.

TIP: Release the fuel vapor contained in the fuel tank. 6. While pressing and holding the pressure

relief tab under the fuel tank cap again, turn the fuel tank cap counterclockwise to remove it.

7. Fill the fuel tank with fuel. WARNING! Do not overfill. Otherwise fuel can expand and overflow if the temperature in- creases. [EWM02610]

TIP: Wipe up any spilled gasoline immediately

with dry rags.

1. Air vent screw

1. Air vent screw

1. Pressure relief tab 2. Fuel tank cap

1

ZMU07444

1

ZMU07445

1

2

ZMU07446

1. Pressure relief tab 2. Fuel tank cap

Fuel tank capacity: 12 L (3.17 US gal, 2.64 Imp.gal)

1

2

ZMU07447

ZMU07461

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Operation

51

Dispose of rags properly according to local laws or regulations.

8. Turn the fuel tank cap clockwise to tight- en it until a click is heard.

9. Turn the air vent screw clockwise to close it.

EMU44111

Operating engine

WARNING EWM02701

Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the water near you.

When the air vent valve is opened, gaso- line vapor will be released. Gasoline is highly flammable, and its vapors are flammable and explosive. Refrain from

smoking, and keep away from open flames and sparks while opening the air vent valve.

This product emits exhaust gases which contain carbon monoxide, a colorless, odorless gas which could cause brain damage or death when inhaled. Symp- toms include nausea, dizziness, and drowsiness. Keep cockpit and cabin ar- eas well ventilated. Avoid blocking ex- haust outlets.

EMU43476

Sending fuel Sending fuel for built-in fuel tank (F2.5) 1. Open the air vent valve.

2. Open the fuel cock.

Sending fuel for built-in fuel tank (F4, F6) 1. Open the air vent valve.

1. Fuel tank cap

1. Air vent screw

1

ZMU07449

1

ZMU07444 1. Air vent valve

ZMU07624

11

U6BV37E0.book Page 51 Wednesday, May 1, 2013 8:56 AM

Operation

52

2. Align the fuel cock with the built-in fuel tank position.

3. Remove the top cowling, and then squeeze the primer pump in the bottom cowling repeatedly until you feel it be- come slightly firm.

4. Install the top cowling.

Sending fuel for portable fuel tank (optional) (F4, F6) 1. To loosen the air vent screw, turn it coun-

terclockwise until it stops.

2. If there is fuel in the built-in fuel tank, open the air vent valve to prevent pres- sure from increasing inside the tank due to fuel expansion.

3. Check the direction of the fuel hose. Make sure that the arrow of the primer pump points toward the outboard motor.

1. Air vent valve

1. Built-in fuel tank position

1. Primer pump

ZMU07625

11

ZMU06720

11

ZMU06826 1

1. Air vent screw

1. Air vent valve

1

ZMU07445

ZMU07625

11

U6BV37E0.book Page 52 Wednesday, May 1, 2013 8:56 AM

Operation

53

4. Remove the fuel joint cap. Align the fuel joint on the fuel hose with the fuel joint on the outboard motor and connect the fuel hose securely between the tank and the outboard motor while pinching the joint so that the primer pump arrow is pointing to- ward the outboard motor.

5. Wipe up any spilled gasoline immediately with dry rags.

TIP: Dispose of rags properly according to local laws or regulations. 6. Align the fuel cock with the portable fuel

tank position.

7. Squeeze the primer pump, with the arrow pointing up, until you feel it become firm. During engine operation, place the tank horizontally, otherwise fuel cannot be drawn from the fuel tank.

1. Toward the outboard motor 2. Arrow 3. Primer pump 4. Toward the fuel tank

1. Fuel hose 2. Fuel joint cap

ZMU07452

1 43

2

ZMU06743

2

1

1. Fuel joint 2. Fuel hose

1. Portable fuel tank position

ZMU07455

2 1

ZMU06802

1

1

U6BV37E0.book Page 53 Wednesday, May 1, 2013 8:56 AM

Operation

54

EMU27494

Starting engine

WARNING EWM01600

Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the water near you.

EMU42880

Manual start

WARNING EWM01840

Failure to attached engine shut-off cord could result in a runaway boat if opera- tor is ejected. Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg while operating. Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning.

Avoid accidentally pulling the cord dur- ing normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

Procedure for starting outboard motor (F2.5) 1. Place the gear shift lever in neutral.

WARNING! Always start the engine in neutral to avoid accidentally moving the boat. [EWM00111]

2. If the engine shut-off cord is equipped, at- tach it to a secure place on your clothing, or your arm or leg. Then install the clip on the other end of the cord into the engine shut-off switch.

3. Place the throttle grip in the (start) position.

1. Arrow 2. Primer pump

U6BV37E0.book Page 54 Wednesday, May 1, 2013 8:56 AM

Operation

55

4. Place the choke knob in the (start) position. After the engine starts, re- turn the knob to the (run) position.

TIP: When restarting a warm engine, place the

choke knob in the (run) position. If the choke knob is left in the (start)

position while the engine is running, the en- gine will run poorly or stall.

5. Pull the manual starter handle slowly until you feel resistance. Then give a strong pull straight out to start the engine. Re- peat if necessary.

6. After the engine starts, slowly return the manual starter handle to the original posi- tion before releasing it.

7. Slowly return the throttle grip to the fully closed position.

TIP: When the engine is cold, it needs to be

warmed up. For further information, see page 57.

If the engine does not start on the first try, repeat the procedure. If the engine fails to start after 4 or 5 tries, open the throttle a small amount (between 1/8 and 1/4) and try again. Also if the engine is warm and fails to start, open the throttle a same amount and try to start the engine again. If the engine still fails to start, see page 92.

Procedure for starting outboard motor (F4, F6) 1. Move the gear shift lever to the neutral

position.

U6BV37E0.book Page 55 Wednesday, May 1, 2013 8:56 AM

Operation

56

2. Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg. Then, install the clip on the other end of the cord to the engine shut-off switch.

3. Align the engine start mark on the throttle grip with the notch in the tiller han- dle.

TIP: If the ambient temperature is -15C or less, turn the throttle grip so that the engine start mark is positioned past the notch in the tiller handle.

4. Pull out the choke knob fully.

TIP: It is not necessary to use the choke when starting a warm engine, such as immediately after the outboard motor has been operated under a load. 5. Pull the manual starter handle slowly until

you feel resistance. Then give a strong pull straight out to crank and start the en- gine. If the engine does not start on the first try, repeat the procedure.

1. Neutral position

1. Start mark 2. Notch

1

ZMU06749

ZMU06744

ZMU06808

12

1. Choke knob

ZMU06865

ZMU06784

1

U6BV37E0.book Page 56 Wednesday, May 1, 2013 8:56 AM

Operation

57

6. After the engine starts, slowly return the manual starter handle to its original posi- tion before releasing it.

7. Warm up the engine. For further informa- tion, see page 57.

8. Return the choke knob to its original posi- tion gradually.

9. Slowly return the throttle grip to the fully closed position.

EMU36510

Checks after starting engine EMU36523

Cooling water Check for a steady flow of water from the cool- ing water pilot hole. A continuous flow of water from the pilot hole indicates that the water pump is pumping water through the cooling water passages. If the cooling water passag- es are frozen, it may take a while for water to start flowing out of the pilot hole.

NOTICE ECM01810

If water is not flowing out of the pilot hole at all times while the engine is running, overheating and serious damage could occur. Stop the engine and check whether the cooling water inlet on the lower case or the cooling water pilot hole is blocked. Consult your Yamaha dealer if the prob- lem cannot be located and corrected.

F2.5

F4, F6

EMU27670

Warming up engine EMU40070

Warming up After starting the engine, return the choke knob to the halfway position. For approxi- mately the first 5 minutes after starting, warm up the engine by operating at one fifth throttle

ZMU06746

ZMU06818

1. Cooling water pilot hole

1. Cooling water pilot hole

1

ZMU07371

ZMU06747

1

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Operation

58

or less. After the engine has warmed up, push the choke knob in fully. Failure to do so will shorten engine life.

TIP: If the choke knob is left pulled out after the

engine starts, the engine will stall. In temperatures of -5C or less, leave the

choke knob pulled out fully for approximate- ly 30 seconds after starting.

EMU36531

Checks after engine warm up EMU36541

Shifting While the boat is tightly moored, and without applying throttle, confirm that the engine shifts smoothly into forward and reverse, and back to neutral. EMU36971

Stop switches Perform the following procedure to check that the engine stop switch and engine shut-off switch operate properly. Start the engine, and then check that the

engine stops when the engine stop button is pushed.

Restart the engine, and then check that the engine stops when the clip is pulled from the engine shut-off switch.

Check that the engine cannot be started with the clip removed from the engine shut- off switch.

EMU42840

Shifting

WARNING EWM00180

Before shifting, make sure there are no swimmers or obstacles in the water near you.

NOTICE ECM02220

Before shifting the outboard motor, turn the throttle grip to the fully closed position and let the engine speed return to idle speed. Otherwise, the shift mechanism could be damaged.

F2.5 To shift out of neutral (forward) Move the gear shift lever firmly and crisply to- ward the bow.

To shift out of neutral (reverse) 1. Turn the outboard motor around 180,

and then move the tiller handle so that it is facing toward the bow.

TIP: The outboard motor can be turned a full 360 in its bracket (full-pivot system). 2. Move the gear shift lever firmly and crisp-

ly toward the stern.

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Operation

59

To shift from in gear to neutral 1. Close the throttle so that the engine

slows to idle speed.

2. After the engine is at idle speed in gear move the gear shift lever firmly and crisp- ly into the neutral position.

F4, F6 To shift to forward or reverse Move the gear shift lever to the forward posi- tion or reverse position.

To shift to neutral 1. Close the throttle so that the engine

slows to idle speed. 2. Move the gear shift lever to the neutral

position.

EMU38071

Stopping boat (F2.5) The boat is not equipped with a separate braking system. Water resistance stops it af- ter the throttle lever is moved back to the fully closed position. The stopping distance varies depending on gross weight, water surface conditions, and wind direction.

1. Forward position 2. Neutral position 3. Reverse position

1. Neutral position

123

ZMU06864

1

ZMU06749

U6BV37E0.book Page 59 Wednesday, May 1, 2013 8:56 AM

Operation

60

EMU39882

Stopping boat (F4, F6)

WARNING EWM02321

Do not use the reverse function to slow down or stop the boat as it could cause you to lose control, be ejected, or impact the load or other parts of the boat. This could increase the risk of serious injury. It could also damage the shift mechanism.

The boat is not equipped with a separate braking system. Water resistance stops it af- ter the throttle lever is moved back to idle. The stopping distance varies depending on gross weight, water surface conditions, and wind di- rection. EMU27821

Stopping engine Before stopping the engine, first let it cool off for a few minutes at idle or low speed. Stop- ping the engine immediately after operating at high speed is not recommended. EMU43493

Procedure F2.5 1. Push and hold the engine stop button un-

til the engine stops completely.

2. After stopping the engine, close the air vent valve and fuel cock.

TIP: The engine can also be stopped by pulling the engine shut-off cord and removing the clip from the engine shut-off switch. F4, F6 1. Push and hold the engine stop button un-

til the engine stops completely. The en- gine can also be stopped by pulling the engine shut-off cord and removing the clip from the engine shut-off switch.

1. Air vent valve

ZMU07626

11

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Operation

61

2. Close the air vent valve and air vent screw.

3. Align the fuel cock with the closed posi- tion.

4. After stopping the engine, disconnect the fuel hose from the fuel joint on the out- board motor, and then install the fuel joint cap. WARNING! When not using a por- table fuel tank, make sure to install the fuel joint cap. Otherwise, injury could result from striking the fuel joint acci- dentally. [EWM02411]

1. Engine stop button

1. Engine shut-off switch 2. Cord 3. Clip

1. Air vent valve

ZMU06726

1

ZMU06867

13 2

ZMU07627

11

1. Air vent screw

1. Closed position

1

ZMU07444

ZMU06871 1

1

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Operation

62

5. Disconnect the fuel hose from the fuel joint on the fuel tank.

EMU40111

Trimming outboard motor

WARNING EWM00740

Excessive trim for the operating condi- tions (either trim up or trim down) can cause boat instability and can make steer- ing the boat more difficult. This increases the possibility of an accident. If the boat begins to feel unstable or is hard to steer, slow down and/or readjust the trim angle.

The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. The correct trim angle is affected by variables, such as the load in the boat, sea conditions, and running speed. F2.5

1. Fuel hose 2. Fuel joint cap

1. Fuel joint 2. Fuel hose

ZMU06753

2

1

ZMU07443

2 1

1. Trim operating angle

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Operation

63

F4, F6

EMU42830

Adjusting trim angle for manual tilt models

WARNING EWM00400

Stop the engine before adjusting the trim angle.

Use care to avoid being pinched when removing or installing the rod.

Use caution when trying a trim position for the first time. Increase speed gradu- ally and watch for any signs of instability or control problems. Improper trim an- gle can cause loss of control.

There are 4 or 5 holes provided in the clamp bracket to adjust the outboard motor trim an- gle. 1. Stop the engine. 2. Tilt the outboard motor up, and then re-

move the trim rod from the clamp bracket.

F2.5

F4, F6

3. Change the position of the trim rod in di- rection A to raise the bow (trim-out). Change the position of the trim rod in di- rection B to lower the bow (trim-in).

TIP: The outboard motor trim angle changes ap- proximately 4 degrees when the trim rod posi- tion is changed by 1 hole. 4. Make test runs with the outboard motor

set at different trim angles to find the po- sition that works best for your boat and operating conditions.

1. Trim operating angle

ZMU06754

1

1. Trim rod

1. Trim rod

A B

1

ZMU07372

ZMU06755

1

A

B

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Operation

64

EMU40121

Adjusting boat trim Generally, a boat is stable when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater ten- dency to steer to one side or the other. If this occurs, adjust the trim angle.

Bow Up Too much trim-out puts the bow of the boat too high in the water. Excessive trim-out can also cause the propeller to ventilate, which re- duces performance further, and the boat may porpoise (hop in the water), which could throw the operator and passengers over- board.

Bow Down Too much trim-in causes the boat to plow through the water, decreasing fuel economy and making it hard to increase speed. Resis- tance at the bow is greatly increased, height- ening the danger of bow steering and making operation difficult and dangerous.

EMU44132

Tilting up and down If the engine will be stopped for some time or if the boat is moored in shallows, the outboard motor should be tilted up to protect the propel- ler and lower casing from damage by collision with obstructions, and also to reduce salt cor- rosion.

WARNING EWM00222

Make sure that no one is near the outboard motor when tilting the outboard motor up or down. Otherwise, body parts could be crushed between the outboard motor and the clamp bracket.

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Operation

65

WARNING EWM02722

Leaking fuel is a fire hazard. Close the air vent valve or air vent screw and place the fuel cock in the closed position if the out- board motor will be tilted for more than a few minutes. Otherwise, fuel may leak.

NOTICE ECM00231

Before tilting the outboard motor, follow the procedure under Stopping engine in this chapter. Never tilt the outboard motor while the engine is running. Se- vere damage from overheating can re- sult.

Do not tilt up the engine by pushing the tiller handle because this could break the handle.

Keep the power unit higher than the pro- peller at all times. Otherwise water could run into the cylinder and cause damage.

The outboard motor cannot be tilted when in reverse or when the outboard motor is turned 180 (facing the rear).

EMU43503

Procedure for tilting up F2.5 1. Place the gear shift lever in neutral (if

equipped) and face the outboard motor forward.

2. Tighten the steering friction adjuster by turning it clockwise to prevent the out- board motor from turning freely.

3. Close the air vent valve.

4. Close the fuel cock.

5. Hold the carrying handle and tilt the en- gine up fully until the tilt support lever au- tomatically locks.

1. Air vent valve

ZMU07626

11

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Operation

66

TIP: If the outboard motor is not facing forward, the tilt support lever cannot automatically turn to the locked position. If the tilt support lever does not automatically lock, swing the out- board motor a little to the left and right. F4, F6 1. Align the fuel cock with the closed posi-

tion.

2. Move the gear shift lever to the neutral position.

3. To prevent steering movement, turn the steering friction adjuster clockwise.

4. Close the air vent valve.

5. Disconnect the fuel hose from the fuel joint on the outboard motor, and then in- stall the fuel joint cap. WARNING! When not using a portable fuel tank, make sure to install the fuel joint cap. Other- wise, injury could result from striking the fuel joint accidentally. [EWM02411]

1. Closed position

1. Neutral position

ZMU06871 1

1

1

ZMU06749

1. Steering friction adjuster

1. Air vent valve

1. Fuel hose

ZMU06827

1

ZMU07627

11

ZMU06753

2

1

U6BV37E0.book Page 66 Wednesday, May 1, 2013 8:56 AM

Operation

67

6. Hold the rear of the top cowling and fully tilt the outboard motor up. Slightly lower the outboard motor from the fully tilted up position and fit the tilt support bar secure- ly into the holder located on the clamp bracket.

EMU42950

Procedure for tilting down F2.5 1. Slightly tilt the outboard motor up. 2. Slowly tilt the outboard motor down while

pulling the tilt support lever up.

3. Loosen the steering friction adjuster by turning it counterclockwise, and adjust the steering friction according to operator preference. WARNING! If there is too

much resistance it could be difficult to steer, which could result in an acci- dent. [EWM00721]

F4, F6 1. Slightly tilt the outboard motor up. 2. Slowly tilt the outboard motor down while

pulling the tilt support bar up.

3. Turn the steering friction adjuster coun- terclockwise to set the steering friction according to operator preference. WARNING! If there is too much resis- tance it could be difficult to steer, which could result in an accident. [EWM00721]

2. Fuel joint cap

1. Tilt support bar 2. Holder

ZMU06829

1

2 1. Tilt support bar

1. Steering friction adjuster

ZMU06833

1

ZMU06834

1

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Operation

68

EMU28062

Shallow water (F4, F6) EMU39891

Cruising in shallow water

WARNING EWM02391

Operate the boat at the lowest possible speed when cruising in shallow water. Hitting an underwater obstacle could cause the outboard motor to lift out of the water, resulting in loss of control.

When cruising in shallow water, do not operate in reverse. Reverse thrust can cause the outboard motor to lift out of the water, increasing the chance of an accident and personal injury.

NOTICE ECM00260

Do not tilt the outboard motor up so that the cooling water inlet on the lower unit is above the surface of the water when set- ting up for and cruising in shallow water. Otherwise severe damage from overheat- ing can result.

EMU39583

Procedure for shallow water cruising 1. Move the gear shift lever to the neutral

position.

2. Hold the rear of the top cowling and slightly tilt the outboard motor up until the tilt support bar automatically locks. The outboard motor can be operated in this position for shallow water cruising. The outboard motor is equipped with 3 shal- low water cruising positions.

EMU40041

Procedure for returning to normal cruising 1. To tilt the outboard motor down to the

normal running position, move the gear shift lever to the neutral position.

1. Cooling water inlet

ZMU06819 1

1. Neutral position

1. Shallow water cruising position 2. Tilt support bar

1

ZMU06749

ZMU06760

2

1

U6BV37E0.book Page 68 Wednesday, May 1, 2013 8:56 AM

Operation

69

2. Slightly tilt the outboard motor up, and then slowly tilt the outboard motor down while pulling the tilt support bar up.

EMU35391

Cruising in other conditions Cruising in salt water After operating in salt water, flush the cooling water passages with fresh water to prevent them from becoming clogged. Also rinse the outside of the outboard motor with fresh wa- ter. Cruising in muddy, turbid, or acidic water Water in some areas can be acidic or with a lot of sediment in it, such as muddy or turbid (cloudy) water. After operating in such water, flush the cooling passages with fresh water to prevent corrosion. Also rinse the outside of the outboard motor with fresh water.

1. Neutral position

1. Tilt support bar

1

ZMU06749

ZMU06881

1

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Maintenance

70

EMU43015

Transporting and storing out- board motor

WARNING EWM02620

USE CARE when transporting fuel tank, whether in a boat or car.

DO NOT fill fuel container to maximum capacity. Gasoline will expand consider- ably as it warms up and can build up pressure in the fuel container. This can cause fuel leakage and a potential fire hazard.

Leaking fuel is a fire hazard. When trans- porting and storing the outboard motor, disconnect the fuel line from the out- board motor to prevent fuel from leak- ing.

Never get under the outboard motor while it is tilted. Severe injury could oc- cur if the outboard motor accidentally falls.

Do not use the tilt support lever or knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the outboard motor cannot be trailered in the normal run- ning position, use an additional support device to secure it in the tilt position.

When storing or transporting the outboard motor, make sure to follow the procedure list- ed below. Disconnect the fuel hose from the fuel joint

on the outboard motor and install the fuel joint cap.

Tighten the built-in fuel tank cap until a click is heard.

Close the air vent valve and fuel cock. Tighten the portable fuel tank cap and its air

vent screw.

Store the portable fuel tank in a well-venti- lated place.

Store the portable fuel tank in a place that is stable and not exposed to shocks.

When the outboard motor is tilted for a pro- longed time while the boat is moored or trail- ered, make sure to follow the procedure listed below. Disconnect the fuel hose from the fuel joint

on the outboard motor and install the fuel joint cap.

Tighten the built-in fuel tank cap until a click is heard.

Close the air vent valve and fuel cock. Tighten the portable fuel tank cap and its air

vent screw. The outboard motor should be transported and stored in the normal running position. If there is insufficient road clearance in this po- sition, then trailer the outboard motor in the tilted position using a motor support device such as a transom saver bar. Consult your Yamaha dealer for further details. EMU43513

Transporting/Dismounting the out- board motor F2.5 When transporting or storing the outboard motor while removed from a boat, keep the outboard motor in the attitude shown.

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Maintenance

71

TIP: Place a towel or something similar under the outboard motor to protect it from damage. F4, F6

WARNING EWM02300

Do not hold the top cowling or tiller handle when mounting or dismounting the out- board motor. Otherwise, the outboard mo- tor could fall.

1. Stop the engine and land the boat. 2. Tighten the fuel tank cap until a click is

heard. 3. Close the air vent valve.

4. Align the fuel cock with the closed posi- tion.

5. When using a portable fuel tank, discon- nect the fuel hose from the fuel joint, and then install the fuel joint cap.

6. To prevent steering movement, turn the steering friction adjuster clockwise.

1. Air vent valve 2. Fuel tank cap

1. Closed position

ZMU07628

2

1

ZMU06871 1

1

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Maintenance

72

7. Turn the tiller handle 180 so that it is pointing rearward.

8. Loosen the clamp screws. 9. Hold the carrying handle and the hand-

grip on the front side of the bottom cowl- ing and lift up the outboard motor using two people to dismount it from the boat.

10. When transporting or storing the out- board motor while removed from a boat, use an outboard motor stand.

11. If transporting or storing the outboard mo- tor horizontally cannot be avoided, tight- en the clamp screws completely, place a towel or something similar under the out- board motor to protect it from damage, and then place the outboard motor in the attitude shown. If the front side of the out- board motor is facing down, turn the clamp bracket 90 so that it does not con- tact the ground, and then turn the steer- ing friction adjuster clockwise to secure the bracket.

1. Steering friction adjuster

1. Carrying handle 2. Handgrip

ZMU06827

1

ZMU06836

ZMU068211 2

ZMU06835

ZMU06761

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Maintenance

73

EMU43661

Storing outboard motor When storing your Yamaha outboard motor for prolonged periods of time (2 months or longer), several important procedures must be performed to prevent excessive damage. It is advisable to have your outboard motor serviced by an authorized Yamaha dealer pri- or to storage. However, the following proce- dures can be performed by the owner.

NOTICE ECM02551

Do not place the outboard motor on its side before the cooling water has drained from it completely. Otherwise, water may enter the cylinder through the exhaust valve and cause engine trouble.

Transport and store the outboard motor as specified in Transporting/Dismount- ing the outboard motor.

Store the outboard motor in a dry, well- ventilated place, not in direct sunlight.

EMU28305

Procedure EMU42962

Flushing in a test tank

NOTICE ECM00301

Before starting the engine, make sure to supply water to the cooling water passag- es. Otherwise, the engine could overheat and be damaged.

Cooling system flushing is essential to pre- vent the cooling system from clogging up with salt, sand, or dirt. In addition, fogging of the engine is mandatory to prevent excessive en- gine damage due to rust. Perform the flushing and fogging at the same time. F2.5 1. Wash the outboard motor body using

fresh water. NOTICE: Do not spray wa- ter into the air intake. [ECM01840] For further information, see page 77.

2. Fill the fuel tank with fresh fuel and add one ounce of Yamaha Fuel Conditioner and Stabilizer to each gallon of fuel.

ZMU06806

ZMU06762

ZMU06807

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Maintenance

74

TIP: The use of Yamaha Fuel Conditioner and Stabilizer eliminates the need to drain the fuel system. Consult your Yamaha dealer or other qualified mechanic if the fuel system is to be drained instead. 3. Remove the engine top cowling and si-

lencer cover. 4. Remove the propeller. For further infor-

mation, see page 89. 5. Install the outboard motor on the test

tank.

6. Fill the tank with fresh water to above the level of the anti-cavitation plate. NOTICE: If the fresh water level is below the lev- el of the anti-cavitation plate, or if the water supply is insufficient, engine seizure may occur. [ECM00291]

7. Run the engine at a fast idle for 1015 minutes in neutral position. WARNING! Do not touch or remove electrical parts when starting or during opera- tion. Keep hands, hair, and clothes away from the flywheel and other ro- tating parts while the engine is run- ning. [EWM00091]

8. Just prior to turning off the engine, quickly spray Yamaha Stor-Rite Engine Fogging Oil alternately into each carburetor or the

fogging hole of the silencer cover, if equipped. When properly done, the en- gine will smoke excessively and almost stall.

9. Remove the outboard motor from the test tank.

10. Install the silencer cover/cap and top cowling.

11. Drain the cooling water completely out of the motor. Clean the body thoroughly.

12. Install the propeller. For further informa- tion, see page 89.

F4, F6 1. Wash the outboard motor body using

fresh water. NOTICE: Do not spray wa- ter into the air intake. [ECM01840] For further information, see page 77.

2. Fill the built-in fuel tank with fresh fuel and add one ounce of Yamaha Fuel Condi- tioner and Stabilizer to each gallon of fu- el.

TIP: The use of Yamaha Fuel Conditioner and Stabilizer eliminates the need to drain the fuel system. Consult a Yamaha dealer or oth- er qualified mechanic if the fuel system is to be drained instead. 3. When using a portable fuel tank, discon-

nect the fuel hose, install the fuel joint cap, and then align the fuel cock with the closed position.

1. Water surface 2. Lowest water level

U6BV37E0.book Page 74 Wednesday, May 1, 2013 8:56 AM

Maintenance

75

4. Remove the top cowling and fogging hole cap.

5. Remove the propeller. For further infor- mation, see page 89.

6. Install the outboard motor on the test tank.

7. Fill the test tank with fresh water to above the level of the anti-cavitation plate. NOTICE: If the fresh water level is be- low the level of the anti-cavitation plate, or if the water supply is insuffi- cient, engine seizure may occur. [ECM00291]

8. Start the engine, operate it for 1015 min- utes at engine idle speed. WARNING! Do not touch or remove electrical parts when starting or during opera- tion. Keep hands, hair, and clothes away from the flywheel and other ro- tating parts while the engine is run- ning. [EWM00091]

9. Quickly spray Yamaha Stor-Rite Engine Fogging Oil into the fogging hole of the silencer. When properly done, the engine will smoke excessively and stop.

10. Remove the outboard motor from the test tank.

11. Drain the cooling water completely out of the outboard motor. Clean the body thor- oughly.

12. Install the fogging hole cap and top cowl- ing.

13. Install the propeller. For further informa- tion, see page 89.

1. Closed position

1. Cap

1. Water surface 2. Lowest water level 3. Cooling water inlet

ZMU06871 1

1

1

ZMU06822

3

ZMU06862

ZMU06823

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Maintenance

76

EMU39637

Flushing with the water flush plug (option- al) (F4, F6)

NOTICE ECM00301

Before starting the engine, make sure to supply water to the cooling water passag- es. Otherwise, the engine could overheat and be damaged.

Cooling system flushing is essential to pre- vent the cooling system from clogging up with salt, sand, or dirt. In addition, fogging of the engine is mandatory to prevent excessive en- gine damage due to rust. Perform the flushing and fogging at the same time. 1. Wash the outboard motor body using

fresh water. NOTICE: Do not spray wa- ter into the air intake. [ECM01840] For further information, see page 77.

2. Fill the built-in fuel tank with fresh fuel and add one ounce of Yamaha Fuel Condi- tioner and Stabilizer to each gallon of fu- el.

TIP: The use of Yamaha Fuel Conditioner and Stabilizer eliminates the need to drain the fuel system. Consult a Yamaha dealer or oth- er qualified mechanic if the fuel system is to be drained instead. 3. When using a portable fuel tank, discon-

nect the fuel hose, install the fuel joint cap, and then align the fuel cock with the closed position.

4. Remove the top cowling and fogging hole cap.

5. Remove the propeller. For further infor- mation, see page 89.

6. Remove the screw located beside the (wash) mark on the lower case. Install the water flush plug and connect it to a fresh water tap.

7. Cover the cooling water inlet with tape.

1. Closed position

1. Cap

ZMU06871 1

1

1

ZMU06822

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Maintenance

77

8. Turn on the water supply to the outboard motor.

9. Start the engine, operate it for 1015 min- utes at engine idle speed. WARNING! Do not touch or remove electrical parts when starting or during opera- tion. Keep hands, hair, and clothes away from the flywheel and other ro- tating parts while the engine is run- ning. [EWM00091]

10. Quickly spray Yamaha Stor-Rite Engine Fogging Oil into the fogging hole of the silencer. When properly done, the engine will smoke excessively and stop.

11. Turn off the water supply to the outboard motor, and then remove the water flush plug and tape.

12. Install the fogging hole cap and top cowl- ing.

13. Install the propeller. For further informa- tion, see page 89.

EMU39280

Lubrication 1. Install the spark plug and torque to proper

specification. For information on spark plug installation, see page 83.

2. Change the gear oil. For instructions, see page 90. Inspect the oil for the presence of water that indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealer prior to use.

3. Grease all grease fittings. For further de- tails, see page 81.

TIP: For long-term storage, fogging the engine with oil is recommended. Contact your Yamaha dealer for information about fogging oil and procedures for your engine. EMU30267

Cleaning and anticorrosion measures 1. Wash down the exterior of the outboard

motor with fresh water and dry off com- pletely. NOTICE: Do not spray water into the air intake. [ECM01840] For further in- formation, see page 77.

2. Spray the outboard motor exterior with Yamaha Silicone Protectant. NOTICE: Do not spray when the engine is run- ning. Also, do not spray near the si- lencer or into the engine. Otherwise the engine could be damaged. [ECM01402]

3. Wax the cowling with a non-abrasive wax such as Yamaha Silicone Wax.

EMU44340

Cleaning the outboard motor When cleaning the outboard motor, the top cowling must be installed. 1. Wash the exterior of the outboard motor

using fresh water. NOTICE: Do not spray water into the air intake. [ECM01840]

1. Water flush plug

1

ZMU02509

ZMU06823

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Maintenance

78

2. Drain the cooling water completely out of the outboard motor. Clean the body thor- oughly.

EMU28461

Checking painted surface of outboard motor Check the outboard motor for scratches, nicks, or flaking paint. Areas with damaged paint are more likely to corrode. If necessary, clean and paint the areas. A touch-up paint is available from your Yamaha dealer. EMU37081

Periodic maintenance

WARNING EWM01981

These procedures require mechanical skills, tools, and supplies. If you do not have the proper skills, tools, or supplies to perform a maintenance procedure, have a Yamaha dealer or other qualified mechan- ic do the work. The procedures involve disassembling the motor and exposing dangerous parts. To reduce the risk of injury from moving, hot, or electrical parts: Turn off the engine and keep engine

shut-off cord (lanyard) with you when you perform maintenance unless other- wise specified.

Allow the engine to cool before handling hot parts or fluids.

Always completely reassemble the mo- tor before operation.

Maintenance, replacement, or repair of the emission control devices and systems may be performed by any marine engine repair establishment or individual. All war- ranty repairs, however, including those to the emission control system, must be per- formed by an authorized Yamaha marine dealership. A service manual is available for purchase through your Yamaha dealer for owners who have the mechanical skills, tools, and other equipment necessary to perform mainte- nance not covered by this owners manual. EMU28511

Replacement parts If replacement parts are necessary, use only genuine Yamaha parts or parts of equivalent design and quality. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and pas- sengers. Yamaha genuine parts and acces- sories are available from your Yamaha dealer. EMU35521

Maintenance interval guidelines The service intervals provided in the Mainte- nance Chart were developed based upon typical use that includes operating at varied speeds, with sufficient time for engine warm up and cool-down, a medium to light load, and an average cruising speed near the 3000 to 4000 rpm range. As with any engine, howev- er, if your normal operating conditions are dif- ferent, you should consider service more often than shown, especially how often you change your engine oil and gear oil. Exam- ples might include extended wide-open-throt- tle use or long periods of trolling or idling, carrying heavy loads, or frequent starting and stopping or shifting. More frequent mainte-

1. Air intake

1

ZMU07862

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Maintenance

79

nance will often pay off many times over in in- creased engine life and greater owner satisfaction. Consult your Yamaha dealer for additional maintenance recommendations. EMU34446

Maintenance chart 1 TIP: Refer to the sections in this chapter for explanations of each owner-specific action. The maintenance cycle on these charts assume usage of 100 hours per year and regular

flushing of the cooling water passages. Maintenance frequency should be adjusted when op- erating the engine under adverse conditions such as extended trolling.

Disassembly or repairs may be necessary depending on the outcome of maintenance checks.

Expendable or consumable parts and lubricants will lose their effectiveness over time and through normal usage regardless of the warranty period.

When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine should be flushed with clean water after each use.

The symbol indicates the check-ups which you may carry out yourself. The symbol indicates work to be carried out by your Yamaha dealer.

Item Actions

Initial Every

20 hours (3 months)

100 hours (1 year)

300 hours (3 years)

500 hours (5 years)

Anode (external) Inspection or replace- ment as necessary

Anode (thermostat cover)

Inspection or replace- ment as necessary

Cooling water leakage Inspection or replace- ment as necessary

Cowling lock lever Inspection

Engine starting condi- tion/noise Inspection

Engine idle speed/noise Inspection

Engine oil Replacement

Engine oil filter (crank- case) (F4, F6)

Inspection, cleaning or replacement as neces- sary

Fuel filter (disposal type) (F4, F6) Replacement

Fuel filter (inside built- in fuel tank)

Inspection and clean- ing as necessary

Fuel line Inspection

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Maintenance

80

Fuel line Inspection or replace- ment as necessary

Fuel pump (F4, F6) Inspection or replace- ment as necessary

Fuel/engine oil leakage Inspection

Gear oil Replacement

Greasing points Greasing

Impeller/water pump housing

Inspection or replace- ment as necessary

Impeller/water pump housing Replacement

Propeller/propeller nut/cotter pin

Inspection or replace- ment as necessary

Shift link Inspection, adjustment or replacement as nec- essary

Spark plug Inspection or replace- ment as necessary

Spark plug cap/spark plug wire

Inspection or replace- ment as necessary

Water from the cooling water pilot hole Inspection

Throttle link/throttle ca- ble

Inspection, adjustment or replacement as nec- essary

Thermostat Inspection or replace- ment as necessary

Valve clearance Inspection and adjust- ment

Cooling water inlet Inspection

Stop switch Inspection or replace- ment as necessary

Connector connec- tions/lead connections

Inspection or replace- ment as necessary

Fuel tank (optional Yamaha portable fuel tank) (F4, F6)

Inspection and clean- ing as necessary

Fuel tank (built-in tank) Inspection and clean- ing as necessary

Item Actions

Initial Every

20 hours (3 months)

100 hours (1 year)

300 hours (3 years)

500 hours (5 years)

U6BV37E0.book Page 80 Wednesday, May 1, 2013 8:56 AM

Maintenance

81

EMU34451

Maintenance chart 2

EMU28943

Greasing Yamaha grease A (water resistant grease) Yamaha grease D (corrosion resistant grease; for propeller shaft) F2.5

Item Actions Every

1000 hours

Exhaust guide/exhaust manifold

Inspection or replace- ment as necessary

U6BV37E0.book Page 81 Wednesday, May 1, 2013 8:56 AM

Maintenance

82

F4, F6

ZMU06764

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Maintenance

83

EMU39293

Cleaning and adjusting spark plug The spark plug is an important engine compo- nent. The condition of the spark plug can indi- cate something about the condition of the engine. For example, if the center electrode porcelain is very white, this could indicate an intake air leak or carburetion problem in that cylinder. Do not attempt to diagnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should peri- odically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode. 1. Remove the spark plug cap from the

spark plug. F2.5

F4, F6

2. Remove the spark plug. If electrode ero- sion becomes excessive, or if carbon and other deposits are excessive, you should replace the spark plug with another of the correct type. WARNING! When remov- ing or installing a spark plug, be care- ful not to damage the insulator. A damaged insulator could allow exter- nal sparks, which could lead to explo- sion or fire. [EWM00561]

3. Be sure to use the specified spark plug, otherwise the engine may not operate properly. Before fitting the spark plug, measure the electrode gap with a wire thickness gauge; replace it if out of spec- ification.

4. When fitting the plug, wipe off any dirt from the threads, and then screw it in to the correct torque.

1. Spark plug cap

1. Spark plug cap

1

ZMU07373

ZMU068031

Standard spark plug: F2.5MHA BR6HS F4MHA CR6HSB F6MHA CR6HSB

1. Spark plug gap 2. Spark plug part number 3. Spark plug I.D. mark (NGK)

Spark plug gap: 0.60.7 mm (0.0240.028 in)

U6BV37E0.book Page 83 Wednesday, May 1, 2013 8:56 AM

Maintenance

84

TIP: If a torque-wrench is not available when you are fitting a spark plug, a good estimate of the correct torque is 1/4 to 1/2 a turn past finger- tight. Have the spark plug adjusted to the cor- rect torque as soon as possible with a torque- wrench. EMU42462

Checking fuel filter (F2.5) For cleaning or replacement of the fuel filters at the intervals specified in the periodic main- tenance chart, consult a Yamaha dealer. EMU39921

Checking fuel filter (F4, F6) The fuel filters are located in the filler hole of the built-in fuel tank and in the bottom cowling. Check the fuel filters periodically. If foreign material is found in the filters, clean or replace them. For cleaning or replacement of the fuel filters, consult a Yamaha dealer.

EMU40140

Inspecting idle speed

NOTICE ECM02230

When checking the engine idle speed, make sure to supply water to the cooling water passages by placing the outboard motor in the water or by using a flushing attachment or test tank.

To check the engine idle speed, a diagnostic tachometer is required. For checking or ad- justment of the engine idle speed, consult a Yamaha dealer. EMU42911

Changing engine oil F2.5 Change the engine oil several minutes after the engine has been stopped, so that the oil is still warm, but not hot.

WARNING EWM01950

Be sure the outboard motor is securely fastened to the transom or a stable stand.

NOTICE ECM01710

Change the engine oil after the first 20 hours of operation or 3 months, and every 100 hours or at 1-year intervals thereafter. Otherwise the engine will wear quickly.

1. Put the outboard motor in an upright po- sition (not tilted). NOTICE: If the out- board motor is not level, the oil level indicated on the oil dipstick may not be accurate. [ECM01861]

Spark plug torque: F2.5MHA 25 Nm (2.55 kgf-m, 18.4 ft-lb) F4MHA 13 Nm (1.33 kgf-m, 9.6 ft-lb) F6MHA 13 Nm (1.33 kgf-m, 9.6 ft-lb)

1. Fuel filter

ZMU076291

1

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Maintenance

85

2. Prepare a suitable container that holds a larger amount than the engine oil capaci- ty. Loosen and remove the drain screw and gasket while holding the container under the drain hole. Then remove the oil filler cap. Let the oil drain completely. Wipe up any spilled oil immediately.

3. Put a new gasket on the oil drain screw. Apply a light coat of oil to the gasket and install the drain screw.

TIP: If a torque wrench is not available when you are installing the drain screw, finger tighten the screw just until the gasket comes into con- tact with the surface of the drain hole. Then

tighten 1/4 to 1/2 turn more. Tighten the drain screw to the correct torque with a torque wrench as soon as possible. 4. Add the correct amount of oil through the

filler hole. Install the filler cap. NOTICE: Overfilling the oil could cause leakage or damage. If the oil level is above the upper level mark, drain until the level meets the specified capacity. [ECM01850]

5. Turn off the engine and wait 3 minutes. Recheck the oil level using the oil level check window to be sure the level falls between the upper and lower marks. Fill with oil if it is below the lower mark, or drain to the specified level if it is above the upper mark.

1. Drain screw 2. Gasket

Drain screw tightening torque: 18 Nm (1.84 kgf-m, 13.3 ft-lb)

2

1 ZMU02352

Recommended engine oil: YAMALUBE 4M FC-W or 4-stroke outboard motor oil

Engine oil quantity: 0.4 L (0.42 US qt, 0.35 Imp.qt)

1. Oil filler cap

U6BV37E0.book Page 85 Wednesday, May 1, 2013 8:56 AM

Maintenance

86

6. Dispose of used oil according to local regulations.

TIP: For more information on the disposal of

used oil, consult your Yamaha dealer. Change the oil more often when operating

the engine under adverse conditions such as extended trolling.

F4, F6

WARNING EWM00760

Avoid draining the engine oil immediate- ly after stopping the engine. The oil is hot and should be handled with care to avoid burns.

Be sure the outboard motor is securely fastened to the transom or a stable stand.

NOTICE ECM01710

Change the engine oil after the first 20 hours of operation or 3 months, and every 100 hours or at 1-year intervals thereafter. Otherwise the engine will wear quickly.

To prevent spilling oil where it could cause damage to nature, it is strongly recommended that you use an oil changer to change the en- gine oil. If an oil changer is not available, drain the engine oil by removing the drain screw. If

you are not familiar with the procedure for changing the engine oil, consult your Yamaha dealer. 1. Put the outboard motor in an upright po-

sition (not tilted). NOTICE: If the out- board motor is not level, the oil level indicated on the oil dipstick may not be accurate. [ECM01861]

2. Start the engine. Warm it up and keep the idle speed for 5-10 minutes.

3. Stop the engine and leave it for 5-10 min- utes.

4. Remove the top cowling. 5. Remove the oil filler cap.

1. Oil filler cap 2. Oil lubrication check window

ZMU06766

ZMU06769

1 2

U6BV37E0.book Page 86 Wednesday, May 1, 2013 8:56 AM

Maintenance

87

TIP: The oil lubrication check window does not in- dicate the engine oil level. Use the oil lubrica- tion check window to make sure that the engine is being lubricated with oil while it is running. 6. Insert the tube of the oil changer into the

oil filler hole, and then extract the engine oil completely using the oil changer.

TIP: When using an oil changer, skip steps 7 and 8. 7. Prepare a suitable container that holds a

larger amount than the engine oil capaci- ty. Remove the drain screw and gasket while holding the container under the drain hole. Let the oil drain completely. Wipe up any spilled oil immediately.

TIP: If the oil does not drain easily, change the tilt angle or turn the outboard motor to port and starboard to drain the oil. 8. Put a new gasket on the oil drain screw.

Apply a light coat of oil to the gasket and install the drain screw.

TIP: If a torque wrench is not available when you are installing the drain screw, finger tighten the screw just until the gasket comes into con- tact with the surface of the drain hole. Then tighten 1/4 to 1/2 turn more. Tighten the drain screw to the correct torque with a torque wrench as soon as possible. 9. Add the correct amount of oil through the

filler hole. NOTICE: Overfilling the oil tank could cause leakage or damage. If the oil level is above the upper mark, extract oil until the oil is between the upper and lower marks. [ECM02181]

10. Install the oil filler cap and tighten it com- pletely.

11. Leave the outboard motor for 5-10 min- utes.

12. Remove the oil filler cap and wipe the at- tached oil dipstick clean.

13. Install the oil filler cap and tighten it com- pletely.

14. Remove the oil filler cap again and check that the oil level on the dipstick is be- tween the upper and lower marks. If the

1. Oil changer

1. Drain screw 2. Gasket

ZMU06767 1

12

ZMU06768

Drain screw tightening torque: 18 Nm (1.84 kgf-m, 13.3 ft-lb)

Recommended engine oil: YAMALUBE 4M FC-W or 4-stroke outboard motor oil

Engine oil quantity: 0.6 L (0.63 US qt, 0.53 Imp.qt)

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Maintenance

88

oil level is not at the proper level, add or extract oil until the oil is between the up- per and lower marks.

15. Start the engine and make sure that there are no oil leaks. NOTICE: If there are oil leaks, stop the engine and find the cause. Consult your Yamaha dealer if the problem cannot be located and corrected. Continued operation with a problem could cause severe engine damage. [ECM02150]

16. Dispose of used oil according to local regulations.

TIP: For more information on the disposal of

used oil, consult your Yamaha dealer. Change the oil more often when operating

the engine under adverse conditions such as extended trolling.

17. Install the top cowling. EMU39771

Checking connector and lead For checking of the following items for the connectors and leads, consult a Yamaha dealer. Check that each connector is connected

securely. Check that each ground lead is secured

properly.

EMU39301

Checking propeller

WARNING EWM02280

You could be seriously injured if the en- gine accidentally starts when you are near the propeller. Before inspecting, remov- ing, or installing the propeller, place the gear shift lever in neutral, and remove the clip from the engine shut-off switch.

Do not use your hand to hold the propeller when loosening or tightening the propeller nut. Put a wood block between the anti-cavi- tation plate and the propeller to prevent the propeller from turning.

Checkpoints Check each of the propeller blades for ero-

sion from cavitation or ventilation, or other damage.

Check the propeller shaft for damage. Check the splines for wear or damage. Check for fish line tangled around the pro-

peller shaft. Check the propeller shaft oil seal for dam-

age.

1. Oil dipstick 2. Upper mark 3. Lower mark

1

2 3

ZMU06737

ZMU06879

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Maintenance

89

EMU30662

Removing propeller EMU39310

Spline models 1. Straighten the cotter pin and pull it out us-

ing a pair of pliers. 2. Remove the propeller nut and washer.

WARNING! Do not use your hand to hold the propeller when loosening the propeller nut. [EWM01890]

3. Remove the propeller and thrust washer.

EMU30672

Installing propeller EMU39323

Spline models

NOTICE ECM00501

Make sure to use a new cotter pin and bend the ends over securely. Otherwise, the propeller could come off during opera- tion and be lost.

1. Apply Yamaha grease D (corrosion resis- tant grease) into the propeller shaft.

2. Install the thrust washer and propeller onto the propeller shaft. NOTICE: Make sure to install the thrust washer before installing the propeller. Otherwise, the lower case and propeller boss could be damaged. [ECM01881]

3. Install the washer and tighten the propel- ler nut until there is no looseness in the propeller.

4. Align the propeller nut hole with the pro- peller shaft hole. Insert a new cotter pin in the holes and bend the cotter pin ends. NOTICE: Do not reuse the cotter pin. Otherwise, the propeller can come off during operation. [ECM01891]

1. Propeller shaft

1. Cotter pin 2. Propeller nut 3. Washer 4. Propeller 5. Thrust washer

ZMU06777

1

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Maintenance

90

TIP: If the propeller nut hole does not align with the propeller shaft hole after tightening the pro- peller nut, tighten the nut further or loosen the nut to align the holes. EMU39784

Changing gear oil

WARNING EWM02350

Be sure the outboard motor is securely fastened to the transom or a stable stand. You could be severely injured if the out- board motor falls on you.

1. Put the outboard motor in an upright po- sition (not tilted).

2. Place a suitable container under the gear case.

3. Remove the gear oil drain screw and gas- ket.

F2.5

F4, F6

4. Remove the oil level plug and gasket to allow the oil to drain completely. NOTICE: Check the used gear oil after it has been drained. If the gear oil is milky or contains water or a large amount of metal particles, the gear case may be damaged. Have a Yamaha dealer check and repair the outboard motor. [ECM00713]

TIP: For disposal of used oil, consult your Yamaha dealer. 5. Using a flexible or pressurized filling de-

vice, inject the gear oil into the gear oil drain screw hole.

1. Gear oil drain screw 2. Oil level plug

1. Gear oil drain screw 2. Oil level plug

Recommended gear oil: Yamalube Marine Gearcase Lube or Hypoid gear oil

Recommended gear oil grade: SAE 90 API GL-4

Gear oil quantity: F2.5MHA 0.075 L (0.079 US qt, 0.066 Imp.qt) F4MHA 0.100 L (0.106 US qt, 0.088 Imp.qt) F6MHA 0.100 L (0.106 US qt, 0.088 Imp.qt)

1

2

ZMU06779

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Maintenance

91

F2.5

F4, F6

6. Put a new gasket on the oil level plug. When the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug.

7. Put a new gasket on the gear oil drain screw. Insert and tighten the gear oil drain screw.

EMU39332

Inspecting and replacing anode (ex- ternal) Yamaha outboard motors are protected from corrosion by sacrificial anode. Inspect the ex- ternal anode periodically. Remove scales

from the surface of the anode. Consult a Yamaha dealer for replacement of the exter- nal anode.

NOTICE ECM00720

Do not paint anodes, as this would render them ineffective.

F2.5

F4, F6

Tightening torque: 9 Nm (0.92 kgf-m, 6.6 ft-lb)

Tightening torque: 9 Nm (0.92 kgf-m, 6.6 ft-lb)

ZMU06780

1. Anode

1. Anode

1

ZMU07374

ZMU06781

1

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92

EMU44021

Troubleshooting This section describes the likely causes and remedies for problems, such as those in the fuel, compression, and ignition systems, poor starting, and loss of power. Please note that all of the items in this section may not apply to your model. If your outboard motor requires repair, bring it to a Yamaha dealer.

Engine will not start. Q. Is fuel tank empty? A. Fill tank with clean, fresh fuel.

Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged? A. Clean or replace filter.

Q. Is fuel pump malfunctioning? A. Have serviced by a Yamaha dealer.

Q. Is spark plug fouled or of incorrect type? A. Inspect spark plug. Clean or replace with recommended type.

Q. Is spark plug cap fitted incorrectly? A. Check and re-fit cap.

Q. Is spark plug wiring damaged or poorly connected? A. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.

Q. Are electrical parts malfunctioning? A. Have serviced by a Yamaha dealer.

Q. Is clip on engine shut-off cord (lanyard) in- stalled?

A. Install clip to engine shut-off switch.

Q. Are engine inner parts damaged? A. Have serviced by a Yamaha dealer.

Engine idles irregularly or stalls. Q. Is fuel system obstructed? A. Check for pinched or kinked fuel line or oth- er obstructions in fuel system.

Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged? A. Clean or replace filter.

Q. Are electrical parts malfunctioning? A. Have serviced by a Yamaha dealer.

Q. Is spark plug gap incorrect? A. Replace spark plug.

Q. Is spark plug wiring damaged or poorly connected? A. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.

Q. Is specified engine oil not being used? A. Check and replace oil with specified type.

Q. Is thermostat malfunctioning or clogged? A. Have serviced by a Yamaha dealer.

Q. Are carburetor adjustments incorrect? A. Have serviced by a Yamaha dealer.

Q. Is fuel pump malfunctioning? A. Have serviced by a Yamaha dealer.

Q. Is air vent valve closed?

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93

A. Open air vent valve.

Q. Is choke knob pulled out? A. Return to home position.

Q. Is carburetor clogged? A. Have serviced by a Yamaha dealer.

Q. Is fuel joint connection incorrect? A. Connect correctly.

Q. Is throttle cable adjustment incorrect? A. Have serviced by a Yamaha dealer.

Engine power loss. Q. Is propeller damaged? A. Have propeller repaired or replaced.

Q. Is propeller pitch or diameter incorrect? A. Install correct propeller to operate outboard at its recommended speed (r/min) range.

Q. Is trim angle incorrect? A. Adjust trim angle to achieve most efficient operation.

Q. Is outboard motor mounted at incorrect height on transom? A. Have outboard motor adjusted to proper transom height.

Q. Is boat bottom fouled with marine growth? A. Clean boat bottom.

Q. Is spark plug fouled or of incorrect type? A. Inspect spark plug. Clean or replace with recommended type.

Q. Are weeds or other foreign material tan- gled on gear housing?

A. Remove foreign material and clean lower unit.

Q. Is fuel system obstructed? A. Check for pinched or kinked fuel line or oth- er obstructions in fuel system.

Q. Is fuel filter clogged? A. Clean or replace filter.

Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel.

Q. Is spark plug gap incorrect? A. Replace spark plug.

Q. Is spark plug wiring damaged or poorly connected? A. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.

Q. Are electrical parts malfunctioning? A. Have serviced by a Yamaha dealer.

Q. Is specified fuel not being used? A. Replace fuel with specified type.

Q. Is specified engine oil not being used? A. Check and replace oil with specified type.

Q. Is thermostat malfunctioning or clogged? A. Have serviced by a Yamaha dealer.

Q. Is air vent valve closed? A. Open air vent valve.

Q. Is fuel pump malfunctioning? A. Have serviced by a Yamaha dealer.

Q. Is fuel joint connection incorrect?

U6BV37E0.book Page 93 Wednesday, May 1, 2013 8:56 AM

Trouble Recovery

94

A. Connect correctly.

Engine vibrates excessively. Q. Is propeller damaged? A. Have propeller repaired or replaced.

Q. Is propeller shaft damaged? A. Have serviced by a Yamaha dealer.

Q. Are weeds or other foreign material tan- gled on propeller? A. Remove and clean propeller.

Q. Is steering pivot loose or damaged? A. Have serviced by a Yamaha dealer. EMU29433

Temporary action in emergency EMU29441

Impact damage

WARNING EWM00870

The outboard motor can be seriously dam- aged by a collision while operating or trailering. Damage could make the out- board motor unsafe to operate.

If the outboard motor hits an object in the wa- ter, follow the procedure below.

1. Stop the engine immediately. 2. Check the control system and all compo-

nents for damage. Also, check the boat for damage.

3. Whether damage is found or not, return to the nearest harbor slowly and careful- ly.

4. Have a Yamaha dealer check the out- board motor before operating it again.

EMU43680

Starter will not operate If the starter mechanism does not operate (the engine cannot be cranked with the start- er), the engine can be started with an emer- gency starter rope. EMU42921

Emergency engine starting F2.5

WARNING EWM01452

Use this procedure only in an emergen- cy to return to the nearest port for re- pairs.

Make sure the remote control lever is in neutral. Otherwise the boat could unex- pectedly start to move, which could re- sult in an accident.

Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg while operating the boat.

Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, pre- venting it from functioning.

Avoid accidentally pulling the cord dur- ing normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

Make sure no one is standing behind you when pulling the starter rope. It could whip behind you and injure some- one.

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95

An unguarded, rotating flywheel is very dangerous. Keep loose clothing and other objects away when starting the en- gine. Use the emergency starter rope only as instructed. Do not touch the fly- wheel or other moving parts when the engine is running. Do not install the starter mechanism or top cowling after the engine is running.

Do not touch the ignition coil, spark plug wire, spark plug cap, or other electrical components when starting or operating the motor. You could get an electrical shock.

1. Remove the top cowling. 2. Remove the bolts from the fuel tank.

3. Remove the bolts from the starter case.

4. While lifting the fuel tank up, remove the bolt from the starter case.

5. Remove the collar.

6. While lifting the starter case up, discon- nect the choke wire from the carburetor.

7. Remove the starter case by pulling it to- wards you.

8. Install the fuel tank bracket by installing the bolts.

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96

9. Install 2 bolts into the rear section of the fuel tank.

10. Prepare the engine for starting; see page 54. Be sure the engine is in neutral and that the clip is attached to the engine shut-off switch.

11. Turn the lever on the carburetor to oper- ate the choke system when the engine is cold. After the engine starts, return the le- ver to the original position.

12. While lifting the fuel tank, insert the knot- ted end of the emergency starter rope into the notch in the flywheel rotor and wind the rope several turns clockwise.

TIP: If the rope is too long after winding it around the flywheel, shorten its length at the handle. 13. Pull the rope slowly until resistance is felt. 14. Give a strong pull straight out to crank

and start the engine. Repeat if neces- sary.

F4, F6

WARNING EWM02361

Use this procedure only for emergency engine starting to return to the nearest port for repairs.

When the emergency starter rope is used to start the engine, the start-in- gear protection device does not operate. Make sure that the shift lever is in the neutral position. Otherwise, the boat could unexpectedly start to move, which could result in an accident.

Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg while operating the boat.

Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, pre- venting it from functioning.

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97

Avoid accidentally pulling the cord dur- ing normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

Make sure that no one is standing be- hind you when pulling the starter rope. It could whip behind you and injure some- one.

An unguarded, rotating flywheel is very dangerous. Keep loose clothing and other objects away when starting the en- gine. Use the emergency starter rope only as instructed. Do not touch the fly- wheel or other moving parts when the engine is running. Do not install the starter mechanism or top cowling after the engine is running.

Do not touch the ignition coil, spark plug wire, spark plug cap, or other electrical components when starting or operating the outboard motor. You could get an electrical shock.

Before performing the following procedure, make sure to read the emergency starting la- bel on the manual starter/flywheel magnet cover.

1. Move the gear shift lever to the neutral position.

2. Remove the top cowling. 3. Loosen the nut, and then disconnect the

start-in-gear protection cable.

4. Remove the manual starter/flywheel magnet cover by removing the bolts.

1. Emergency starting label

ZMU06866

1

1. Neutral position

1. Start-in-gear protection cable 2. Nut

1. Bolts

1

ZMU06749

ZMU06872

2

1

ZMU06782

1

2

1

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98

5. Reinstall 2 bolts to secure the fuel tank.

6. Insert the knotted end of the emergency starter rope into the notch in the flywheel magnet and wind the rope several turns around the flywheel magnet clockwise.

7. Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg. Then, install the clip on the other end of the cord to the engine shut-off switch.

8. Align the engine start mark on the throttle grip with the notch in the tiller han- dle.

9. Give a strong pull straight out to crank and start the engine.

TIP: If the engine does not start after several at- tempts, pull out the choke knob.

2. Manual starter/flywheel magnet cover

1. Notch 2. Emergency starter rope

ZMU06783

ZMU06876

1

2

1. Start mark 2. Notch

ZMU06744

ZMU06808

12

ZMU06785

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99

EMU33501

Treatment of submerged motor If the outboard motor is submerged, immedi- ately take it to a Yamaha dealer. Otherwise some corrosion may begin almost immediate- ly. NOTICE: Do not attempt to run the out- board motor until it has been completely inspected. [ECM00401]

1. Choke knob

ZMU06816

1

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Consumer information

100

EMU29836

YAMAHA FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY

ZMU07048

Yamaha Motor Corporation, U.S.A. and Yamaha Motor Canada Ltd. (Yamaha) hereby warrant that new Yamaha four-stroke outboard motors will be free from defects in material and workmanship for the period of time stated herein, subject to certain stated limitations.

PERIOD OF WARRANTY. Any new Yamaha four-stroke outboard motor purchased from an authorized Yamaha dealer in the customers country of residence (United States or Canada) and registered with Yamaha will be warranted against defects in material or workmanship, subject to exclusions noted herein, for the following applicable period determined by type of use:

The second and third year of warranty (if applicable) shall be limited to covering the cost of parts and labor for major components only. The major components covered are:

WARRANTY REGISTRATION. To be eligible for warranty coverage, the outboard motor must be registered with Yamaha in the country of residence. Warranty registration can be accomplished by any authorized Yamaha Outboard Motor Dealer.

OBTAINING REPAIRS UNDER WARRANTY. During the period of warranty, any authorized Yamaha Outboard Motor Dealer in the country of residence will, free of charge, repair or replace, at Yamahas option, any parts adjudged defective by Yamaha due to faulty workmanship or material from the factory. All replaced parts will become the property of Yamaha. If the customer is temporarily using a U.S.-registered outboard motor in Canada, or a Canada-registered outboard motor in the United States, and it needs warranty repairs, the owner should contact a nearby authorized Yamaha Outboard Motor Dealer for assistance. The local dealer will contact Yamaha on the owners behalf so that needed repairs can be made as quickly as possible.

CUSTOMERS RESPONSIBILITY. Under the terms of this warranty, the customer will be responsible for ensuring that the outboard motor is properly operated, maintained, and stored as specified in the applicable Owners Manual. The owner of the outboard motor shall give notice to an authorized Yamaha Outboard Motor Dealer of any and all apparent defects within ten (10) days of discovery and make the motor available at that time for inspection and repairs at the dealers place of business.

Replacement parts used in warranty repairs will be warranted for the balance of the applicable warranty period.

Pleasure use three (3) years from the date of purchase.

Power Unit Section Power Head Intake Manifold Carburetor Assembly and its Related Components Fuel Injection System and its Related Components Fuel and Oil Pump Assemblies Ignition System (Standard and Microcomputer) Lower Unit Section Bracket Section Exhaust System Bracket System Upper Casing Power Trim and Tilt Assembly Lower Unit Assembly

Commercial application one (1) year from the date of purchase. A commercial application is defined as any use of the outboard motor to generate income (excluding tournament fishing) or support business operations in any way during the warranty period, without regard to the type or percentage of commercial use. Yamaha reserves the right to modify incorrect registration data and reduce the warranty period to reflect commercial use.

Yamaha peripheral equipment included with the motor, such as gauges, fuel tanks, and hoses, remote control boxes, and wiring external from the motor unit, will be warranted for one (1) year from the date of purchase for either pleasure or commercial use.

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SPECIFIC PARTS EXCLUDED FROM WARRANTY. Parts replaced due to normal wear or routine maintenance such as oil, spark plugs, shear pins, propellers, hubs, fuel and oil filters, brushes for the starter motor and power tilt motor, water pump impellers, and anodes, are not covered by warranty. Charges for removal of the motor from a boat and transporting the motor to and from an authorized Yamaha Outboard Motor Dealer are excluded from warranty coverage.

EMISSION CONTROL WARRANTY (United States only). Yamaha warrants to the ultimate purchaser and any subsequent owner, that the emission control components on this engine are designed, built and equipped so as to conform at the time of sale with applicable regulations under section 213 of the Clean Air Act and that this engine is covered against defects in materials and workmanship which cause said engine to fail to conform with applicable exhaust emission regulations for five (5) years from the date of purchase or 175 hours of operation, whichever comes first. Evaporative components (e.g., hoses, fuel tank, fuel cap) are two (2) years from the date of purchase. Some states have different emission control warranty provisions. As these vary from state to state, consult your Yamaha dealer or contact Yamaha Customer Relations at 1-866-894-1626 for more information.

TRANSFER OF WARRANTY Transfer of the warranty from the original purchaser to any subsequent purchaser is possible by having the motor inspected by an authorized Yamaha Outboard Motor Dealer and requesting the dealer to submit a change of registration to Yamaha within ten (10) days of the transfer.

THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE/PROVINCE TO PROVINCE.

YAMAHA MAKES NO OTHER WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE OBLIGATIONS AND TIME LIMITS STATED IN THIS WARRANTY ARE HEREBY DISCLAIMED BY YAMAHA AND EXCLUDED FROM THIS WARRANTY. SOME STATES/PROVINCES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU. ALSO EXCLUDED FROM THIS WARRANTY ARE ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING LOSS OF USE. SOME STATES/PROVINCES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU.

GENERAL EXCLUSIONS FROM WARRANTY. This warranty will not cover the repair of damage if the damage is a result of abuse or neglect of the product. Examples of abuse and neglect include, but are not limited to: 1. Racing or competition use, modification of original parts, abnormal strain. 2. Lack of proper maintenance and off season storage as described in the Owners Manual; installation of parts or accessories that are

not equivalent in design and quality to genuine Yamaha parts. 3. Operation of the motor at an rpm other than specified, use of lubricants or oils that are not suitable for outboard motor use. 4. Damage as a result of accidents, collisions, contact with foreign materials, or submersion. 5. Growth of marine organism on motor surfaces. 6. Normal deterioration.

Specific parts excluded from the second and third year of warranty (if applicable) are: Top and Bottom Cowling Electric Components (other than ignition system) Rubber Components (such as hoses, tubes, rubber seals, fittings, and clamps)

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IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE U.S.A. OR CANADA

Welcome to the Yamaha Family!

Congratulations on the purchase of your new Yamaha products. Yamaha is commit- ted to exceptional customer satisfaction and we want your ownership experience to be a satisfying one. Please read the following warranty information to help ensure satisfaction with your Yamaha.

This model was manufactured with specifications appropriate for sale and use in the U.S.A. and Canada. Please note the following information:

Your Yamaha model may not be sold in some countries. Therefore, a Yamaha dealer outside the United States or Canada may not have all of the replacement parts or technical information available to provide proper service. This may unavoidably delay repairs. Thank you for your understanding should this happen.

TIP:

1. As explained in the Limited Warranty Statement, the Yamaha warranty covers your Yamaha when it is registered and used in your country of residence. If you are temporarily using a U.S.-registered outboard motor in Canada, or a Canada- registered outboard motor in the United States, and it needs warranty repairs, you should contact a nearby authorized Yamaha Outboard Motor Dealer for assistance. The local dealer will contact Yamaha on the owners behalf so that needed repairs can be made as quickly as possible.

2. If you need repairs while temporarily using your Yamaha in another country, contact the local authorized Yamaha distributor for that country. Yamaha will work with that distributor to make the needed repairs as quickly as possible. If you have to pay for a repair that you believe your warranty would have covered at home, present all repair orders, receipts, or other related documents to your local dealer when you return home. He will be able to contact Yamaha on your behalf to see if any refund can be provided.

3. If your Yamaha is registered or used primarily outside the United States or Canada, the warranty printed in this manual does not apply to you. Contact the dealer who sold the Yamaha marine power unit to you for customer support information.

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For your best ownership experience, think Genuine Yamaha!

Genuine Yamaha Parts Genuine Yamaha replacement parts are the exact same parts as the ones originally equipped on your vehicle, providing you with the performance and du- rability you have come to expect. Why settle for aftermarket parts that may not provide full confidence and satisfaction?

Genuine Yamaha Accessories Yamaha only offers accessories that meet our high stan- dards for quality and performance. Buy with confidence, knowing your Genuine Yamaha Ac- cessories will fit right and perform right right out of the box.

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Genuine Yamaha Service Manuals Get the same factory manual for your vehicle that the technicians at your authorized Yamaha dealer use. Service manuals are available through your Yamaha dealer or you can order them directly through yamahapubs.com (USA only).

Genuine Yamaha products are available only from your Yamaha dealer.

Find out more

Manualsnet FAQs

If you want to find out how the F6CMHS Yamaha works, you can view and download the Yamaha F6CMHS v12 Owner's Manual on the Manualsnet website.

Yes, we have the Owner's Manual for Yamaha F6CMHS as well as other Yamaha manuals. All you need to do is to use our search bar and find the user manual that you are looking for.

The Owner's Manual should include all the details that are needed to use a Yamaha F6CMHS. Full manuals and user guide PDFs can be downloaded from Manualsnet.com.

The best way to navigate the Yamaha F6CMHS v12 Owner's Manual is by checking the Table of Contents at the top of the page where available. This allows you to navigate a manual by jumping to the section you are looking for.

This Yamaha F6CMHS v12 Owner's Manual consists of sections like Table of Contents, to name a few. For easier navigation, use the Table of Contents in the upper left corner.

You can download Yamaha F6CMHS v12 Owner's Manual free of charge simply by clicking the “download” button in the upper right corner of any manuals page. This feature allows you to download any manual in a couple of seconds and is generally in PDF format. You can also save a manual for later by adding it to your saved documents in the user profile.

To be able to print Yamaha F6CMHS v12 Owner's Manual, simply download the document to your computer. Once downloaded, open the PDF file and print the Yamaha F6CMHS v12 Owner's Manual as you would any other document. This can usually be achieved by clicking on “File” and then “Print” from the menu bar.