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Yamaha 15MSH v6 Owner's Manual PDF

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Summary of Content for Yamaha 15MSH v6 Owner's Manual PDF

9.9 15

OWNERS MANUAL

LIT-18626-06-24 63V-28199-18

U.S.A.Edition

ZMU01690

Read this owners manual carefully before operating your outboard motor.

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Important manual information EMU25101

To the owner Thank you for choosing 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.

The Safety Alert Symbol means AT- TENTION! BECOME ALERT! YOUR SAFE- TY IS INVOLVED!

WARNING EWM00780

Failure to follow WARNING instructions could result in severe injury or death to the machine operator, a bystander, or a per- son inspecting or repairing the outboard motor.

CAUTION: ECM00700

A CAUTION indicates special precautions that must be taken to avoid damage to the outboard motor.

NOTE: A NOTE provides key information to make procedures 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. Note that if you do not follow these instructions, not only may the product break down, but the warranty will also be voided. 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 the product was purchased used, please consult your closest dealer for customer re- registration, and to be eligible for the specified services.

NOTE: The 9.9MH, 15MH and the standard accesso- ries are used as a base for the explanations and illustrations in this manual. Therefore some items may not apply to every model.

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Important manual information EMU25110

9.9, 15 OWNERS MANUAL

2005 by Yamaha Motor Corporation, USA

1st edition, February 2005 All rights reserved.

Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, USA

is expressly prohibited. Printed in Japan

P/N LIT-18626-06-24

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Table of contents

General information ......................1 Identification numbers record...... 1

Outboard motor serial number ....... 1 Emission control information ....... 1

North American models.................. 1 Safety information ....................... 2 Important labels........................... 3

Warning labels................................ 3 Basic boating rules

(Rules of the road) ................... 3 Steering and sailing rules and

sound signals .............................. 4 Rules when encountering

vessels ........................................ 4 Other special situations .................. 5

Fueling instructions ..................... 7 Gasoline ......................................... 8 Engine oil........................................ 8

Propeller selection....................... 8 Start-in-gear protection ............... 9

Basic components ......................10 Main components...................... 10

Fuel tank....................................... 10 Fuel joint....................................... 11 Fuel gauge ................................... 11 Fuel tank cap................................ 11 Air vent screw............................... 11 Tiller handle.................................. 11 Gear shift lever ............................. 11 Throttle grip .................................. 11 Throttle indicator........................... 12 Throttle friction adjuster................ 12 Engine stop lanyard switch........... 12 Engine stop button ....................... 13 Choke knob .................................. 13 Manual starter handle................... 13 Steering friction adjuster............... 13 Trim rod (tilt pin) ........................... 14 Tilt lock mechanism...................... 14 Tilt support bar ............................. 14 Top cowling lock lever(s)

(turn type).................................. 14

Carrying handle ............................ 15

Operation ..................................... 16 Installation................................. 16

Mounting the outboard motor ....... 16 Clamping the outboard motor ....... 17

Breaking in engine .................... 18 Gasoline and engine oil mixing

chart (25:1)................................ 18 Procedure for pre-mixed

models ...................................... 18 Preoperation checks ................. 19

Fuel .............................................. 19 Oil ................................................. 19 Controls ........................................ 19 Engine .......................................... 19

Filling fuel and engine oil .......... 19 Filling fuel for portable tank .......... 19 Ring Free Fuel Additive................ 19 Gasoline and oil mixing (100:1) .... 20

Operating engine ...................... 21 Feeding fuel (portable tank) ......... 21 Starting engine ............................. 22

Warming up engine................... 23 Choke start models ...................... 23

Shifting ...................................... 24 Forward (tiller handle and

remote control models) ............. 24 Reverse (manual tilt and

hydro tilt models)....................... 24 Stopping engine........................ 25

Procedure..................................... 25 Trimming outboard motor.......... 26

Adjusting trim angle for manual tilt models ..................... 26

Adjusting boat trim........................ 27 Tilting up and down................... 28

Procedure for tilting up (manual tilt models)................... 28

Procedure for tilting down (manual tilt models)................... 29

Cruising in shallow water .......... 29 Cruising in shallow water

(manual tilt models)................... 29

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Table of contents

Cruising in other conditions....... 31

Maintenance.................................32 Specifications ............................ 32 Transporting and storing

outboard motor....................... 32 Clamp screw mounting

models ...................................... 33 Storing outboard motor................. 33 Procedure..................................... 33 Lubrication (except oil injection

models) ..................................... 35 Cleaning and anticorrosion

measures .................................. 35 Cleaning the outboard motor........ 35 Checking painted surface of

motor......................................... 35 Periodic maintenance................ 35

Replacement parts ....................... 35 Maintenance chart........................ 37 Greasing....................................... 38 Cleaning and adjusting spark

plug ........................................... 38 Checking fuel system ................... 39 Inspecting fuel filter ...................... 40 Cleaning fuel filter......................... 40 Inspecting idling speed................. 40 Checking wiring and

connectors ................................ 41 Exhaust leakage........................... 41 Water leakage .............................. 41 Checking propeller ....................... 41 Removing the propeller ................ 42 Installing the Propeller.................. 42 Changing gear oil ......................... 43 Cleaning fuel tank......................... 44 Inspecting and replacing

anode(s).................................... 44 Checking top cowling ................... 45 Coating the boat bottom............... 45

Trouble Recovery........................ 46 Troubleshooting ........................ 46 Temporary action in

emergency ............................. 49 Impact damage............................. 49 Starter will not operate ................. 49 Emergency starting engine........... 50

Treatment of submerged motor...................................... 51 Procedure..................................... 51

Consumer information ............... 52 Important warranty information

for U.S.A. and Canada........... 52 YAMAHA MOTOR

CORPORATION, U.S.A. OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY .......................... 54

IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA......... 57

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General information

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EMU25170

Identification numbers record EMU25182

Outboard motor serial number The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket or the upper part of the swivel 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.

EMU25221

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.

EMU30390

Approval label of emission control certifi- cate This label is attached to the bottom cowling. Existing Technology; N/A

EMU25262

Manufactured date label This label is attached to the clamp bracket or the swivel bracket.

1. Outboard motor serial number location

1. Approval label location

1. Manufactured date label location

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EMU25362

Safety information Before mounting or operating the outboard

motor, read this entire manual. Reading it should give you an understanding of the motor and its operation.

Before operating the boat, read any own- ers or operators manuals supplied with it and all labels. Be sure you understand each item before operating.

Do not overpower the boat with this out- board motor. Overpowering the boat could result in loss of control. The rated power of the outboard should be equal to or less than the rated horsepower capacity of the boat. If the rated horsepower capacity of the boat is unknown, consult the dealer or boat man- ufacturer.

Do not modify the outboard. Modifications could make the motor unfit or unsafe to use.

Incorrect propeller selection and incorrect use may not only cause engine damage, but also adversely affect fuel consumption. Consult your dealer for correct use.

Never operate after drinking alcohol or tak- ing drugs. About 50% of all boating fatalities involve intoxication.

Have an approved personal flotation device (PFD) on board for every occupant. It is a good idea to wear a PFD whenever boat-

ing. At a minimum, children and non-swim- mers should always wear PFDs, and everyone should wear PFDs when there are potentially hazardous boating condi- tions.

Gasoline is highly flammable, and its va- pors are flammable and explosive. Handle and store gasoline carefully. Make sure there are no gas fumes or leaking fuel be- fore starting the engine.

This product emits exhaust gases which contain carbon monoxide, a colorless, odorless gas which may cause brain dam- age or death when inhaled. Symptoms in- clude nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilat- ed. Avoid blocking exhaust outlets.

Check throttle, shift, and steering for proper operation before starting the engine.

Attach the engine stop switch lanyard cord to a secure place on your clothing, or your arm or leg while operating. If you acciden- tally leave the helm, the cord will pull from the switch, stopping the engine.

Know the marine laws and regulations where you will be boatingand obey them. For basic boating rules, see Rules of the road on page 3.

Stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous weather.

Tell someone where you are going: leave a Float Plan with a responsible person. Be sure to cancel the Float Plan when you re- turn.

Use common sense and good judgment when boating. Know your abilities, and be sure you understand how your boat han- dles under the different boating conditions you may encounter. Operate within your

Manufactured:

ZMU04346

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limits, and the limits of your boat. Always operate at safe speeds, and keep a careful watch for obstacles and other traffic.

Always watch carefully for swimmers during the engine operation.

Stay away from swimming areas. When a swimmer is in the water near you

shift into neutral and shut off the engine. Do not illegally discard empty containers

used to replace or replenish oil. For the cor- rect processing of empty containers, con- sult the dealer where you purchased the oil.

When replacing oils used to lubricate the product (engine or gear oil), be sure to wipe away any spilt oil. Never pour oil without us- ing a funnel or similar device. If necessary, verify the necessary replacement proce- dure with the dealer.

Never illegally discard (dump) the product. Yamaha recommends consulting the deal- er on discarding the product.

Be informed about boating safety. Additional publications and information can be obtained from many organizations, including the follow- ing: 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 Boating Safety Hotline: 1-800-368-5647 National Marine Manufacturers Associa- tion (NMMA) 401 N. Michigan Ave. Chicago, Il 60611 Marine Retailers Association of America 155 N. Michigan Ave. Chicago, Il 60601

EMU25381

Important labels EMU25395

Warning labels

EMU25401

Label

WARNING EWM01260

Be sure shift control is in neutral before starting engine. (except 2HP)

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

Keep hands, hair, and clothes away from flywheel and other rotating parts while engine is running.

EMU25431

Label

WARNING EWM01300

This engine is equipped with a neutral starting device.

The engine will not start unless the shift control is in neutral position.

EMU25500

Basic boating rules (Rules of the road)

Just as there are rules which apply when you are driving on streets and high ways, there are waterway rules which apply when you are driving your boat. These rules are used inter- nationally, and are also enforced by the Unit- ed States Coast Guard and local agencies.

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You should be aware of these rules, and fol- low them whenever you encounter another vessel on the water. Several sets of rules prevail according to geo- graphic location, but are all basically the same as the International Rules of the Road. The rules presented here in your Owners Manual are condensed, and have been provided for your convenience only. Consult your local U.S. Coast Guard Auxiliary or Department of Motor Vehicles for a complete set of rules governing the waters in which you will be us- ing your boat. EMU25510

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 which does not have the right-of-way is called the give-way or burdened vessel. These rules determine which vessel has the right-of- way, and what each vessel should do. 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 which 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 re- gard shall be had to all dangers of navigation and collision, and to any special circumstanc- es, which may render a departure from the above rules necessary in order to avoid im- mediate 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. EMU25520

Rules when encountering vessels There are three main situations which you may encounter with other vessels which could lead to a collision unless the Steering Rules are followed: 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.

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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 ac- cident. 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.

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. EMU25530

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.

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Fishing vessel right-of-way All vessels which 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 which 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 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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EMU25540

Fueling instructions

WARNING EWM00010

GASOLINE AND ITS VAPORS ARE HIGH- LY FLAMMABLE AND EXPLOSIVE!

Do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition.

Stop engine before refueling. Refuel in a well-ventilated area. Refuel

portable fuel tanks off the boat.

ZMU01708

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Take care not to spill gasoline. If gaso- line spills, wipe it up immediately with dry rags.

Do not overfill the fuel tank. Tighten the filler cap securely after refu-

eling. If you should swallow some gasoline, in-

hale a lot of gasoline vapor, or get gaso- line in your eyes, get immediate medical attention.

If any gasoline spills onto your skin, im- mediately wash with soap and water. Change clothing if gasoline spills on it.

Touch the fuel nozzle to the filler open- ing or funnel to help prevent electrostat- ic sparks.

CAUTION: ECM00010

Use only new clean gasoline which has been stored in clean containers and is not contaminated with water or foreign matter.

EMU25570

Gasoline If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel.

Gasohol There are two types of gasohol: gasohol con- taining ethanol and that containing methanol. Gasohol containing ethanol can be used if ethanol content does not exceed 10% and the fuel meets minimum octane ratings. Yamaha does not recommended gasohol containing methanol because it can cause fuel system damage or engine performance problems.

EMU25650

Engine oil

If the recommended engine oil is not avail- able, another 2-stroke engine oil with an NMMA-certified TC-W3 rating may be used. EMU25742

Propeller selection The performance of your outboard motor will be critically affected by your choice of propel- ler, as an incorrect choice could adversely af- fect performance and could also seriously damage the motor. Engine speed depends on the propeller size and boat load. If engine speed is too high or too low for good engine performance, this will have an adverse effect on the engine. Yamaha outboard motors are fitted with pro- pellers chosen to perform well over a range of applications, but there may be uses where a propeller with a different pitch would be more appropriate. For a greater operating load, a smaller-pitch propeller is more suitable as it enables the correct engine speed to be main- tained. Conversely, a larger-pitch propeller is more suitable for a smaller operating load. Yamaha dealers stock a range of propellers, and can advise you and install a propeller on your outboard that is best suited to your appli- cation.

Recommended gasoline: Regular unleaded gasoline with a mini- mum octane rating of 86 (Pump Oc- tane Number) = (R+M)/2

Recommended engine oil: YAMALUBE 2-stroke outboard motor oil

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NOTE: Select a propeller which will allow the engine to reach the middle or upper half of the oper- ating range at full throttle with the maximum boat load. If operating conditions such as light boat loads then allow the engine r/min to rise above the maximum recommended range, re- duce the throttle setting to maintain the en- gine in the proper operating range.

For instructions on propeller removal and in- stallation, see page 41. EMU25770

Start-in-gear protection Yamaha outboard motors or Yamaha-ap- proved remote control units are equipped with start-in-gear protection device(s). This feature permits the engine to be started only when it is in neutral. Always select neutral before starting the engine.

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

ZMU04606

-x 1 2 3

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Basic components

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EMU25795

Main components

NOTE: * May not be exactly as shown; also may not be included as standard equipment on all models.

EMU25802

Fuel tank If your model was equipped with a portable fuel tank, its function is 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.

1. Top cowling 2. Top cowling lock lever 3. Cooling water pilot hole 4. Tilt lock lever 5. Manual starter handle 6. Gear shift lever 7. Engine stop button/Engine stop lanyard

switch 8. Throttle grip 9. Throttle friction adjuster 10.Clamp screw 11.Carrying handle 12.Choke knob 13.Rope attachment 14.Clamp bracket 15.Trim rod 16.Anti-cavitation plate

17.Cooling water inlet 18.Propeller* 19.Fuel hose

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EMU25830

Fuel joint This joint is used to connect the fuel line. EMU25841

Fuel gauge This gauge is located on either the fuel tank cap or on the fuel joint base. It shows the ap- proximate amount of fuel remaining in the tank. EMU25850

Fuel tank cap This cap seals the fuel tank. When removed, the tank can be filled with fuel. To remove the cap, turn it counterclockwise. EMU25860

Air vent screw This screw is on the fuel tank cap. To loosen the screw, turn it counterclockwise. EMU25911

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

EMU25922

Gear shift lever Pulling the gear shift lever towards you puts the engine in forward gear so that the boat moves ahead. Pushing the lever away from you puts the engine in reverse gear so that the boat moves astern.

EMU25941

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

1. Fuel joint 2. Fuel gauge 3. Fuel tank cap 4. Air vent screw

ZMU02284

3

1

4

2

1. Forward 2. Neutral 3. Reverse

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EMU25961

Throttle indicator The fuel consumption curve on the throttle in- dicator shows the relative amount of fuel con- sumed for each throttle position. Choose the setting that offers the best performance and fuel economy for the desired operation.

EMU25970

Throttle friction adjuster A friction device provides adjustable resis- tance to movement of the throttle grip or the remote control lever, and can be set accord- ing to operator preference. To increase resistance, turn the adjuster clockwise. To decrease resistance, turn the adjuster counterclockwise.

WARNING EWM00030

Do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to move throttle lever or grip, which could result in an accident.

When constant speed is desired, tighten the adjuster to maintain the desired throttle set- ting. EMU25990

Engine stop lanyard switch The lock plate must be attached to the engine stop switch for the engine to run. The lanyard 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 lanyard will pull out the lock plate, stopping ig- nition to the engine. This will prevent the boat from running away under power.

WARNING EWM00120

Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg while operating.

Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard where it could become entan- gled, preventing it from functioning.

Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means the loss of most steering

1. Throttle indicator

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control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

NOTE: The engine cannot be started with the lock plate removed.

EMU26001

Engine stop button To open the ignition circuit and stop the en- gine, push this button.

EMU26030

Choke knob To supply the engine with the rich fuel mixture required to start, pull out this knob. The choke knob has the 4 operating positions shown in the following illustration.

EMU26070

Manual starter handle To start the engine, first gently pull the handle out until resistance is felt. From that position, then pull the handle straight out quickly to crank the engine.

EMU26122

Steering friction adjuster A friction device provides adjustable resis- tance to the steering mechanism, and can be set according to operator preference. An ad- justing screw or bolt is located on the swivel bracket.

1. Lanyard 2. Lock plate

1. Use to start a hot engine 2. Use to warm up a cold engine or restart a

warm engine 3. Use to warm up a cold engine or restart a

warm engine 4. Use to start a cold engine

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To increase resistance, turn the adjuster clockwise. To decrease resistance, turn the adjuster counterclockwise.

WARNING EWM00040

Do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to steer, which could result in an accident.

EMU26261

Trim rod (tilt pin) The position of the trim rod determines the minimum trim angle of the outboard motor in relation to the transom.

EMU30440

Tilt lock mechanism The tilt lock mechanism is used to prevent the outboard motor from lifting out of the water when in reverse gear.

To tilt the outboard motor up, set the tilt lock lever to the (up) position. To tilt the out- board motor down, set the tilt lock lever to the (down) position. EMU26330

Tilt support bar The tilt support bar keeps the outboard motor in the tilted up position.

EMU26372

Top cowling lock lever(s) (turn type) To remove the engine top cowling, turn the lock lever(s) and lift off the cowling. When in- stalling the cowling, check to be sure it fits properly in the rubber seal. Then lock the cowling again by returning the lever(s) to the lock position.

1. Tilt lock lever

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EMU26430

Carrying handle A carrying handle is included on the clamp bracket. After setting the handle up, it enables you to carry the outboard motor easily with one hand. To set up the carrying handle, proceed as fol- lows: 1. Place the tilt lock lever in the lock posi-

tion. 2. Securely hook the arm on the carrying

handle end to the clamp bracket bar.

CAUTION: ECM00080

Place the tilt lock lever in the lock position while using the carrying handle. Other- wise, the lower unit could fall to the ground while carrying the motor.

1. Top cowling lock lever(s)

1. Clamp bracket bar

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Operation

16

EMU26901

Installation

CAUTION: ECM00110

Incorrect engine height or obstructions to smooth water flow (such as the design or condition of the boat, or accessories such as transom ladders or depth finder trans- ducers) can create airborne water spray while the boat is cruising. Severe engine damage may result if the motor is operat- ed continuously in the presence of air- borne water spray.

NOTE: During water testing check the buoyancy of the boat, at rest, with its maximum load. Check that the static water level on the ex- haust housing is low enough to prevent water entry into the powerhead, when water rises due to waves when the outboard is not run- ning.

EMU26910

Mounting the outboard motor

WARNING EWM00820

Overpowering a boat could cause se- vere instability. Do not install 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.

The information presented in this sec- tion is intended as reference only. It is not possible to provide complete in- structions for every possible boat and motor combination. Proper mounting depends in part on experience and the specific boat and motor combination.

WARNING EWM00830

Improper mounting of the outboard motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards. Observe the following: For permanently mounted models, your

dealer or other person experienced in proper rigging should mount the motor. If you are mounting the motor yourself, you should be trained by an experienced person.

For portable models, your dealer or oth- er person experienced in proper out- board motor mounting should show you how to mount your motor.

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

EMU26920

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 the mounting height is too high, cavitation

1. Center line (keel line)

ZMU017601

U63V18E0.book Page 16 Friday, February 25, 2005 9:31 AM

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17

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.

NOTE: 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 26.

EMU26970

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 transom clamp screws evenly and securely. Oc- casionally check the clamp screws for tightness during operation of the out- board motor because they could become loose due to engine vibration.

WARNING EWM00640

Loose clamp screws could allow the out- board motor to fall off or move on the tran- som. This could cause loss of control and serious injury. Make sure the transom screws are tightened securely. Occasion- ally check the screws for tightness during operation.

2. If the engine restraint cable attachment is equipped on your engine, an engine re- straint cable or chain should be used. At- tach one end to the engine restraint cable attachment 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.

ZMU02011

025mm (01in.)

ZMU02012

ZMU02013

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18

3. Secure the clamp bracket to the transom using the bolts provided with the out- board (if packed). For details, consult your Yamaha dealer.

WARNING EWM00650

Avoid using bolts, nuts or washers other than those contained in the engine pack- aging. If used, they must be of at least the same quality of material and strength and must be tightened securely. After tighten- ing, test run the engine and check their tightness.

EMU30172

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.

CAUTION: ECM00800

Failure to follow the break-in procedure could result in reduced engine life or even severe engine damage.

EMU27050

Gasoline and engine oil mixing chart (25:1)

CAUTION: ECM00150

Be sure to mix gasoline and oil complete- ly, otherwise the engine may be damaged.

EMU27073

Procedure for pre-mixed models Run the engine under load (in gear with a pro- peller installed) as follows. 1. First 10 minutes:

Run the engine at the lowest possible speed. A fast idle in neutral is best.

2. Next 50 minutes: Do not exceed half throttle (approximate- ly 3000 r/min). Vary engine speed occa- sionally. If you have an easy-planing boat, accelerate at full throttle onto plane, then immediately reduce the throttle to 3000 r/min or less.

3. Second hour: Accelerate at full throttle onto plane, then reduce engine speed to three-quarter throttle (approximately 4000 r/min). Vary engine speed occasionally. Run at full throttle for one minute, then allow about 10 minutes of operation at three-quarter throttle or less to let the engine cool.

4. Third through tenth hours: Avoid operating at full throttle for more than 5 minutes at a time. Let the engine cool between full-throttle runs. Vary en- gine speed occasionally.

5. After the first 10 hours: Operate the engine normally. Use the standard premix ratio of gasoline and oil. For details on mixing fuel and oil, see page 19.

1. : Gasoline 2. : Engine oil

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19

EMU27101

Preoperation checks

WARNING EWM00080

If any item in the preoperation check is not working properly, have it inspected and repaired before operating the outboard motor. Otherwise an accident could occur.

CAUTION: ECM00120

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

EMU27110

Fuel Check to be sure you have plenty of fuel for

your trip. Make sure there are no fuel leaks or gaso-

line fumes. Check fuel line connections to be sure they

are tight (if equipped Yamaha fuel tank or boat tank).

Be sure the fuel tank is positioned on a se- cure, flat surface, and that the fuel line is not twisted or flattened, or likely to contact sharp objects (if equipped Yamaha fuel tank or boat tank).

EMU27120

Oil Check to be sure you have plenty of oil for

your trip. EMU27130

Controls Check throttle, shift, and steering for proper

operation before starting the engine. The controls should work smoothly, without

binding or unusual free play. Look for loose or damaged connections. Check operation of the starter and stop

switches when the outboard motor is in the water.

EMU27140

Engine Check the engine and engine mounting. Look for loose or damaged fasteners. Check the propeller for damage. EMU27233

Filling fuel and engine oil EMU27242

Filling fuel for portable tank

WARNING EWM00060

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

1. Remove the fuel tank cap. 2. Fill the fuel tank carefully. 3. Close the cap securely after refueling.

Wipe up any spilled fuel.

EMU27270

Ring Free Fuel Additive Gasoline is a precise blend of many different substances, each chosen to give certain char- acteristics. Gasoline blends have been changing in recent years in response to con- cerns about pollution and resulting emissions regulations. One of the most obvious changes has been the elimination of lead from most fu- els. As gasoline has changed, the amount of addi- tives such as aromatics and oxygenates has increased. These additives are important for the engines in passenger cars, but they can have detrimental effects in marine engines, because of increased deposits in the combus- tion chamber. When enough deposits collect, piston rings begin sticking. Performance drops and engine wear increases dramatical- ly.

Fuel tank capacity (if equipped Yamaha fuel tank):

24.0 L (6.34 US gal) (5.28 Imp.gal)

U63V18E0.book Page 19 Friday, February 25, 2005 9:31 AM

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20

While many additives available may reduce deposits, Yamaha recommends the use of Ring Free Fuel Additive, available from your Yamaha dealer. Ring Free Fuel Additive has repeatedly proven its ability to clean com- bustion deposits from inside the engine, nota- bly the critical piston-ring-land area, and fuel system components. Follow product labeling for use instructions. EMU27404

Gasoline and oil mixing (100:1)

If equipped with a portable fuel tank 1. Pour oil into the portable fuel tank, and

then add gasoline.

2. Replace the fuel tank cap and close tight- ly.

3. Shake the fuel tank to mix the fuel thor- oughly.

4. Make sure that the oil and gasoline are mixed.

If equipped with a built-in fuel tank 1. Pour oil into a clean fuel can, and then

add gasoline. 2. Replace the fuel can cap and close tight-

ly. 3. Shake the fuel can to mix the fuel thor-

oughly. 4. Make sure that the oil and gasoline are

mixed. 5. Pour the gasoline and oil mixture into the

built-in fuel tank.

CAUTION: ECM00810

Avoid using any oil other than the spec- ified type.

Use a thoroughly blended fuel-oil mix- ture.

If the mixture is not thoroughly mixed, or if the mixing ratio is incorrect, the fol- lowing problems could occur. Low oil ratio: Lack of oil could cause major en- gine trouble, such as piston seizure.

High oil ratio: Too much oil could cause fouled spark plugs, smoky exhaust, and heavy carbon deposits.

NOTE: If using a permanently installed tank, pour the oil gradually as the gasoline is being added to the tank.

Gasoline to engine oil ratio

Break-in period See page 18 After break-in 100:1

1. Engine oil 2. Gasoline

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21

EMU27450

Operating engine EMU27461

Feeding fuel (portable tank)

WARNING EWM00420

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 screw is loosened, gasoline vapor will be released. Gaso- line is highly flammable, and its vapors are flammable and explosive. Refrain from smoking, and keep away from open flames and sparks while loosening the air vent screw.

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.

1. If there is an air vent screw on the fuel tank cap, loosen it 2 or 3 turns.

2. If there is a fuel joint on the motor, firmly connect the fuel line to the joint. Then firmly connect the other end of the fuel line to the joint on the fuel tank.

3. If a steering friction adjuster is provided on your outboard motor, securely attach the fuel line to the fuel line clamp.

NOTE: During engine operation place the tank hori- zontally, otherwise fuel cannot be drawn from the fuel tank.

4. Squeeze the primer pump with the outlet end up until you feel it become firm.

ZMU02295

ZMU02024

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22

EMU27490

Starting engine EMU27530

Manual start models 1. Place the gear shift lever in neutral.

NOTE: The start-in-gear protection device prevents the engine from starting except when in neu- tral.

2. Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg. Then install the lock plate on the other end of the lanyard into the en- gine stop switch.

WARNING EWM00120

Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg while operating.

Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard where it could become entan- gled, preventing it from functioning.

Avoid accidentally pulling the lanyard 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 objects in the boat to be thrown forward.

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

4. Pull out / turn the choke knob fully. Place the choke knob back in to the second or third position to warm up the engine after starting. When the engine has fully warmed up, replace the choke knob back in to its home position.

ZMU02025

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23

NOTE: It is not necessary to use the choke when

starting a warm engine. If the choke knob is left in the pulled out po-

sition 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 crank and start the en- gine. Repeat if necessary.

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

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

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

warmed up. For further information, see page 23.

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 46.

EMU27670

Warming up engine EMU27681

Choke start models 1. After starting the engine, allow it to idle for

3 minutes to warm up. Failure to do so will shorten engine life. Gradually return the choke knob to its home position as the engine warms up.

2. Check for a steady flow of water from the cooling water pilot hole.

CAUTION: ECM00511

A continuous flow of water from the cool- ing water pilot hole shows that the water pump is pumping water through the cool- ing passages. If water is not flowing out of the 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 low- er case or the cooling water pilot hole is blocked. Consult your Yamaha dealer if the problem cannot be located and cor- rected.

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24

EMU27740

Shifting

WARNING EWM00180

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

CAUTION: ECM00220

To change the boat direction or shifting position from forward to reverse or vice- versa, first close the throttle so that the en- gine idles (or runs at low speeds).

EMU27763

Forward (tiller handle and remote control models) Tiller control models 1. Place the throttle grip in the fully closed

position.

2. Move the gear shift lever quickly and firm- ly from neutral to forward.

Remote control models Pull up the neutral interlock trigger (if equipped) and move the remote control lever quickly and firmly from neutral to forward. EMU27795

Reverse (manual tilt and hydro tilt models)

WARNING EWM00190

When operating in reverse, go slowly. Do not open the throttle more than half. Other- wise the boat could become unstable, which could result in loss of control and an accident.

Tiller control models 1. Place the throttle grip in the fully closed

position.

2. On models equipped with a tilt lock lever, check that it is in the lock/down position.

ZMU02856

ZMU02030

ZMU02030

U63V18E0.book Page 24 Friday, February 25, 2005 9:31 AM

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25

3. Move the gear shift lever quickly and firm- ly from neutral to reverse.

Remote control models 1. Check that the tilt lock lever is in the lock

position. 2. Pull up the neutral interlock trigger (if

equipped) and move the remote control lever quickly and firmly from neutral to re- verse.

EMU27820

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. EMU27832

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

til the engine comes to a complete stop.

2. After stopping the engine, tighten the air vent screw on the fuel tank cap and set the fuel cock lever or knob to the closed position, if equipped.

3. Disconnect the fuel line if you are using an external fuel tank.

ZMU02301

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26

NOTE: If the outboard motor is equipped with an en- gine stop switch lanyard, the engine can also be stopped by pulling the lanyard and remov- ing the lock plate from the engine stop switch.

EMU27861

Trimming outboard motor The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. Correct trim angle will help im- prove performance and fuel economy while reducing strain on the engine. Correct trim an- gle depends upon the combination of boat, engine, and propeller. Correct trim is also af- fected by variables such as the load in the boat, sea conditions, and running speed.

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.

EMU27871

Adjusting trim angle for manual tilt models There are 4 or 5 holes provided in the clamp bracket to adjust the outboard motor trim an- gle. 1. Stop the engine. 2. Remove the trim rod from the clamp

bracket while slightly tilting the outboard motor up.

1. Trim operating angle

1. Trim rod

ZMU02043

1

U63V18E0.book Page 26 Friday, February 25, 2005 9:31 AM

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27

3. Reposition the rod in the desired hole. To raise the bow (trim-out), move the rod away from the transom. To lower the bow (trim-in), move the rod to- ward the transom. Make test runs with the trim set to different an- gles to find the position that works best for your boat and operating conditions.

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.

NOTE: The outboard motor trim angle can be changed approximately 4 degrees by shifting the trim rod one hole.

EMU27911

Adjusting boat trim When the boat is on plane, a bow-up attitude results in less drag, greater stability and effi- ciency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tenden- cy to steer to one side or the other. Compen- sate for this as you steer. The trim tab can also be adjusted to help offset this effect. When the bow of the boat is down, it is easier to accelerate from a standing start onto plane.

Bow Up Too much trim-out puts the bow of the boat too high in the water. Performance and econ- omy are decreased because the hull of the boat is pushing the water and there is more air drag. Excessive trim-out can also cause the propeller to ventilate, which reduces perfor- mance further, and the boat may porpoise (hop in the water), which could throw the op- erator and passengers overboard.

Bow Down Too much trim-in causes the boat to plow through the water, decreasing fuel economy and making it hard to increase speed. Operat- ing with excessive trim-in at higher speeds also makes the boat unstable. Resistance at the bow is greatly increased, heightening the danger of bow steering and making opera- tion difficult and dangerous.

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28

NOTE: Depending on the type of boat, the outboard motor trim angle may have little effect on the trim of the boat when operating.

EMU27933

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 casing from damage by collision with obstructions, and also to reduce salt corro- sion.

WARNING EWM00220

Be sure all people are clear of the out- board motor when tilting up and down, also be careful not to pinch any body parts between the drive unit and engine bracket.

WARNING EWM00250

Leaking fuel is a fire hazard. If there is a fuel joint on the outboard motor, discon- nect the fuel line or close the fuel cock if the engine will be tilted for more than a few minutes. Otherwise fuel may leak.

CAUTION: ECM00241

Before tilting the outboard motor, stop the engine by following the procedure on page 25. Never tilt the outboard mo- tor while the engine is running. Severe damage from overheating can result.

Do not tilt up the engine by pushing the tiller handle (if equipped) because this could break the handle.

EMU27976

Procedure for tilting up (manual tilt models) 1. Place the gear shift lever in neutral.

2. Disconnect the fuel line from the out- board motor.

3. Place the tilt lock lever (if equipped) in the release/up position.

U63V18E0.book Page 28 Friday, February 25, 2005 9:31 AM

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29

4. Pull up the shallow water lever (if equipped).

5. Hold the rear of the top cowling with one hand and tilt the engine up fully.

6. Push the tilt support knob into the clamp bracket. Or the tilt support bar will turn to the lock position automatically.

EMU28022

Procedure for tilting down (manual tilt models) 1. Place the tilt lock lever in the re-

lease/down position or return the shallow water lever to its original position.

2. Slightly tilt the engine up until the tilt sup- port bar is automatically released.

3. Slowly tilt the engine down. EMU28060

Cruising in shallow water The outboard motor can be tilted up partially to allow operation in shallow water. EMU28071

Cruising in shallow water (manual tilt models)

WARNING EWM00710

Place the gear shift in neutral before us- ing the shallow water cruising system.

Run the boat at the lowest possible speed when using the shallow water cruising system. The tilt lock mecha- nism does not work while the shallow water cruising system is being used. Hit- ting an underwater obstacle could cause the outboard motor to lift out of the water, resulting in loss of control.

Do not rotate the outboard motor 180 and operate the boat in reverse. Place the gear shift in reverse to operate the boat in reverse.

Use extra care when operating in re- verse. Too much reverse thrust can cause the outboard motor to lift out of the water, increasing the chance of acci- dent and personal injury.

U63V18E0.book Page 29 Friday, February 25, 2005 9:31 AM

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30

Return the outboard motor to its normal position as soon as the boat is back in deeper water.

CAUTION: 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.

EMU28123

Procedure 1. Place the gear shift lever in neutral.

2. Place the tilt lock lever in the release/up position.

3. Slightly tilt the outboard motor up. The tilt support bar will lock automatically, sup- porting the outboard motor in a partially raised position.

NOTE: This outboard motor has 2 positions for shal- low water cruising.

4. To return the outboard motor to the nor- mal running position, place the gear shift lever in neutral, then place the tilt lock le- ver in the lock/down position.

ZMU02868

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31

5. Slightly tilt the outboard motor up until the tilt support bar automatically returns to the free position.

6. Slowly lower the outboard motor to the normal position.

EMU28191

Cruising in other conditions Cruising in salt water After operating in salt water, wash out the cooling water passages with fresh water to prevent them from becoming clogged with salt deposits.

NOTE: For cooling system flushing instructions, see page 32.

Cruising in turbid water Yamaha strongly recommends that you use the optional chromium-plated water pump kit (not available for some models) if you use the outboard motor in turbid (muddy) water condi- tions.

ZMU02048

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32

EMU28217

Specifications Dimension:

Overall length: 873 mm (34.4 in)

Overall width: 332 mm (13.1 in)

Overall height S: 1040 mm (40.9 in)

Transom height S: 440 mm (17.3 in)

Weight (AL) S: 36.0 kg (79 lb)

Performance: Full throttle operating range:

45005500 r/min Maximum output:

15MH 11.0 kW@5000 r/min (15 HP@5000 r/min) 9.9MH 7.3 kW@5000 r/min (9.9 HP@5000 r/min)

Idling speed (in neutral): 750 50 r/min

Engine: Type:

2-stroke L Displacement:

246.0 cm (15.01 cu.in) Bore stroke:

56.0 50.0 mm (2.20 1.97 in) Ignition system:

CDI Spark plug (NGK):

B7HS-10 Spark plug gap:

0.91.0 mm (0.0350.039 in) Control system:

Tiller Starting system:

Manual Starting carburetion system:

Choke valve Drive unit:

Gear positions: Forward-neutral-reverse

Gear ratio: 2.08 (27/13)

Trim and tilt system: Manual tilt

Propeller mark: J

Fuel and oil: Recommended fuel:

Regular unleaded gasoline Min. pump octane:

86 Fuel tank capacity:

24.0 L (6.34 US gal) (5.28 Imp.gal) Recommended engine oil:

YAMALUBE 2-stroke outboard motor oil Fuel:oil ratio: Regular gasoline:

100 :1 Lubrication:

Pre-mixed fuel and oil Recommended gear oil:

Hypoid gear oil SAE#90 Gear oil quantity:

250.0 cm (8.45 US oz) (8.82 Imp.oz) Tightening torque for engine:

Spark plug: 25.0 Nm (18.4 ft-lb) (2.55 kgf-m)

Propeller nut: 17.0 Nm (12.5 ft-lb) (1.73 kgf-m)

EMU28222

Transporting and storing outboard motor

WARNING EWM00690

Leaking fuel is a fire hazard. When trans- porting and storing the outboard motor, close the air vent screw and fuel cock to prevent fuel from leaking.

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.

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Maintenance

33

WARNING EWM00700

Never get under the lower unit while it is tilted, even if a motor support bar is used. Severe injury could occur if the outboard motor accidentally falls.

CAUTION: 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.

The outboard motor should be trailered and stored in the normal running position. If there is insufficient road clearance in this position, then trailer the outboard motor in the tilt posi- tion using a motor support device such as a transom saver bar. Consult your Yamaha dealer for further details. EMU28235

Clamp screw mounting models When transporting or storing the outboard motor while removed from a boat, keep the outboard motor in the attitude shown.

NOTE: Place a towel or something similar under the outboard motor to protect it from damage.

EMU30272

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, you, the owner, with a minimum of tools, can perform the following procedures.

CAUTION: ECM01411

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 port and cause engine trouble.

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

EMU28301

Procedure EMU28372

Flushing in a test tank 1. Wash the outboard motor body using

fresh water. For further information, see page 35.

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Maintenance

34

2. Fill the fuel tank with fresh fuel and add one ounce of Yamaha Fuel Conditioner and Stabilizer (Part No. LUB-FUELC-12- 00) to each gallon of fuel.

NOTE: 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. Install the outboard motor on the test tank.

5. Fill the tank with fresh water to above the level of the anti-cavitation plate.

CAUTION: ECM00300

Do not run the engine without supplying it with cooling water. Either the engine water pump will be damaged or the engine will be damaged from overheating. Before starting the engine, be sure to supply wa- ter to the cooling water passages.

CAUTION: ECM00290

If the fresh water level is below the level of the anti-cavitation plate, or if the water supply is insufficient, engine seizure may occur.

6. Cooling system flushing is essential to prevent the cooling system from clogging up with salt, sand, or dirt. In addition, fog- ging of the engine is mandatory to pre- vent excessive engine damage due to rust. Perform the flushing and fogging at the same time.

WARNING EWM00090

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

Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.

7. Run the engine at a fast idle for 1015 minutes in neutral position.

8. Just prior to turning off the engine, quickly spray Yamaha Stor-Rite Engine Fogging Oil (Part No. LUB-STRRT-12-00) alter- nately into each carburetor or the fogging hole of the silencer cover, if equipped. When properly done, the engine will smoke excessively and almost stall.

9. Remove the outboard motor from the test tank.

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

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

1. Water surface 2. Lowest water level

ZMU02051

1

2

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Maintenance

35

EMU28400

Lubrication (except oil injection models) 1. Grease the spark plug threads and install

the spark plug(s) and torque to proper specification. For information on spark plug installation, see page 38.

2. Change the gear oil. For instructions, see page 43. 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 38.

EMU28421

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

motor with fresh water and dry off com- pletely.

2. Spray the outboard motor exterior with Yamaha Silicone Protectant (Part No. LUB-SILCNE-13-00).

3. Wax the cowling with a non-abrasive wax such as Yamaha Silicone Wax (Part No. ACC-11000-15-02).

EMU28450

Cleaning the outboard motor After use, wash the exterior of the outboard motor with fresh water. Flush the cooling sys- tem with fresh water.

NOTE: For cooling system flushing instructions, see page 32.

EMU28460

Checking painted surface of motor Check the motor for scratches, nicks, or flak- ing 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. EMU28486

Periodic maintenance

WARNING EWM01070

Be sure to turn off the engine when you perform maintenance unless otherwise specified. If you or the owner is not famil- iar with machine servicing, this work should be done by your Yamaha dealer or other qualified mechanic.

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. EMU28510

Replacement parts If replacement parts are necessary, use only genuine Yamaha parts or parts of the same type and of equivalent strength and materials. Any part of inferior quality may malfunction, and the resulting loss of control could endan-

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Maintenance

36

ger the operator and passengers. Yamaha genuine parts and accessories are available from your Yamaha dealer.

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Maintenance

37

EMU28522

Maintenance chart Frequency of maintenance operations may be adjusted according to the operating conditions, but the following table gives general guidelines. Refer to the sections in this chapter for expla- nations of each owner-specific action.

NOTE: When operating in salt water, turbid or muddy 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

10 hours (1 month)

50 hours (3 months)

100 hours (6 months)

200 hours (1 year)

Anode(s) (external) Inspection / replace- ment

Anode(s) (internal) Inspection / replace- ment

Cooling water passag- es Cleaning

Cowling clamp Inspection

Fuel filter (can be dis- assembled) Inspection / cleaning

Fuel system Inspection

Fuel tank (Yamaha por- table tank) Inspection / cleaning

Gear oil Change

Greasing points Greasing

Idling speed (carbure- tor models) Inspection

Propeller and cotter pin Inspection / replace- ment

Shift link / shift cable Inspection / adjustment

Thermostat Inspection / replace- ment

Throttle link / throttle cable / throttle pick-up timing

Inspection / adjustment

Water pump Inspection / replace- ment

Spark plug(s) Cleaning / adjustment / replacement

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Maintenance

38

EMU28931

Greasing Yamaha marine grease (Water resistant grease)

EMU28952

Cleaning and adjusting spark plug

WARNING EWM00560

When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external sparks, which could lead to explosion or fire.

The spark plug is an important engine compo- nent and is easy to inspect. The condition of the spark plug can indicate 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 di- agnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should periodically remove and inspect the

U63V18E0.book Page 38 Friday, February 25, 2005 9:31 AM

Maintenance

39

spark plug because heat and deposits will cause the spark plug to slowly break down and erode. If electrode erosion becomes ex- cessive, or if carbon and other deposits are excessive, you should replace the spark plug with another of the correct type.

Before fitting the spark plug, measure the electrode gap with a wire thickness gauge; adjust the gap to specification if necessary.

When fitting the plug, always clean the gasket surface and use a new gasket. Wipe off any dirt from the threads and screw in the spark plug to the correct torque.

NOTE: 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.

EMU28962

Checking 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.

Check the fuel lines for leaks, crack, or mal- function. If a problem is found, your Yamaha dealer or other qualified mechanic should re- pair it immediately.

Checkpoints Fuel system parts leakage Fuel line joint leakage Fuel line cracks or other damage Fuel connector leakage

Standard spark plug: B7HS-10

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

Spark plug gap: 0.91.0 mm (0.0350.039 in)

Spark plug torque: 25.0 Nm (18.4 ft-lb) (2.55 kgf-m)

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Maintenance

40

EMU28980

Inspecting fuel filter

WARNING EWM00310

Gasoline is highly flammable, and its va- pors are flammable and explosive. If you have any question about properly

doing this procedure, consult your Yamaha dealer.

Do not perform this procedure on a hot or running engine. Allow the engine to cool.

There will be fuel in the fuel filter. Keep away from sparks, cigarettes, flames or other sources of ignition.

This procedure will allow some fuel to spill. Catch fuel in a rag. Wipe up any spilled fuel immediately.

The fuel filter must be reassembled carefully with the O-ring, filter cup, and hoses in place. Improper assembly or replacement could result in a fuel leak, which could result in a fire or explosion hazard.

EMU29001

Cleaning fuel filter 1. Remove the nut holding the fuel filter as-

sembly if equipped.

2. Unscrew the filter cup, catching any spilled fuel in a rag.

3. Remove the filter element, and wash it in solvent. Allow it to dry. Inspect the filter el- ement and O-ring to make sure they are in good condition. Replace them if neces- sary. If any water is found in the fuel, the Yamaha portable fuel tank or other fuel tanks should be checked and cleaned.

4. Reinstall the filter element in the cup. Make sure the O-ring is in position in the cup. Firmly screw the cup onto the filter housing.

5. Attach the filter assembly to the bracket so that the fuel hoses are attached to the filter assembly.

6. Run the engine and check the filter and lines for leaks.

EMU29041

Inspecting idling speed

WARNING EWM00451

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

Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.

1. Filter cup 2. Filter element 3. O-ring 4. Filter housing

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Maintenance

41

CAUTION: ECM00490

This procedure must be performed while the outboard motor is in the water. A flush- ing attachment or test tank can be used.

A diagnostic tachometer should be used for this procedure. Results may vary depending on whether testing is conducted with the flushing attachment, in a test tank, or with the outboard motor in the water. 1. Start the engine and allow it to warm up

fully in neutral until it is running smoothly.

NOTE: Correct idling speed inspection is only possi- ble if the engine is fully warmed up. If not warmed up fully, the idle speed will measure higher than normal. If you have difficulty veri- fying the idle speed, or the idle speed requires adjustment, consult a Yamaha dealer or other qualified mechanic.

2. Verify whether the idle speed is set to specification. For idle speed specifica- tions, see page 32.

EMU29112

Checking wiring and connectors Check that each grounding wire is properly

secured. Check that each connector is engaged se-

curely.

EMU29120

Exhaust leakage Start the engine and check that no exhaust leaks from the joints between the exhaust cover, cylinder head, and body cylinder. EMU29130

Water leakage Start the engine and check that no water leaks from the joints between the exhaust cover, cylinder head, and body cylinder. EMU29171

Checking propeller

WARNING EWM00321

You could be seriously injured if the en- gine accidentally starts when you are near the propeller. Before inspecting, removing, or install-

ing the propeller, remove the spark plug caps from the spark plugs. Also, place the shift control in neutral, turn the main switch to (off) and remove the key, and remove the lanyard from the engine stop switch. Turn off the battery cut-off switch if your boat has one.

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

ZMU02087

ZMU01896

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Maintenance

42

Checkpoints Check each of the propeller blades for

wear, erosion from cavitation or ventilation, or other damage.

Check the propeller shaft for damage. Check the splines / shear pin for wear or

damage. Check for fish line tangled around the pro-

peller shaft.

Check the propeller shaft oil seal for dam- age.

NOTE: If the shear pin equipped: it is designed to break if the propeller hits a hard underwater obstacle to help protect the propeller and drive mechanism. The propeller will then spin freely on the shaft. If this happens, the shear pin must be replaced.

EMU30660

Removing the propeller EMU29194

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

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

spacer (if equipped).

3. Remove the propeller and thrust washer. EMU30670

Installing the Propeller EMU29231

Spline models

CAUTION: ECM00340

Be sure to install the thrust washer be- fore installing the propeller, otherwise the lower case and propeller boss could be damaged.

Be 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 marine grease or a corro- sion resistant grease to the propeller shaft.

ZMU01897

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

ZMU02877

23

45

1

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Maintenance

43

2. Install the spacer (if equipped), thrust washer, and propeller on the propeller shaft.

3. Install the spacer (if equipped) and the washer. Tighten the propeller nut to the specified torque.

4. Align the propeller nut with the propeller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends.

NOTE: If the propeller nut does not align with the pro- peller shaft hole after tightening to the speci- fied torque, tighten the nut further to align it with the hole.

EMU29281

Changing gear oil

WARNING EWM00800

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

Never get under the lower unit while it is tilted, even when the tilt support lever or knob is locked. Severe injury could oc- cur if the outboard motor accidentally falls.

1. Tilt the outboard motor so that the gear oil drain screw is at the lowest point possi- ble.

2. Place a suitable container under the gear case.

3. Remove the gear oil drain screw.

NOTE: If the magnetic gear oil drain screw equipped: remove all metal particles from the screw be- fore installing it.

4. Remove the oil level plug to allow the oil to drain completely.

CAUTION: ECM00710

Inspect the used oil after it has been drained. If the oil is milky, water is getting into the gear case which can cause gear damage. Consult a Yamaha dealer for re- pair of the lower unit seals.

NOTE: For disposal of used oil consult your Yamaha dealer.

5. With the outboard motor in a vertical po- sition, and using a flexible or pressurized filling device, inject the gear oil into the gear oil drain screw hole.

1. Gear oil drain screw 2. Oil level plug

ZMU02064

2

1

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Maintenance

44

6. When the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug.

7. Insert and tighten the gear oil drain screw.

EMU29302

Cleaning fuel tank

WARNING EWM00920

Gasoline is highly flammable, and its va- pors are flammable and explosive. If you have any question about properly

doing this procedure, consult your Yamaha dealer.

Keep away from sparks, cigarettes, flames, or other sources of ignition when cleaning the fuel tank.

Remove the fuel tank from the boat be- fore cleaning it. Work only outdoors in an area with good ventilation.

Wipe up any spilled fuel immediately. Reassemble the fuel tank carefully. Im-

proper assembly can result in a fuel leak, which could result in a fire or ex- plosion hazard.

Dispose of old gasoline according to lo- cal regulations.

1. Empty the fuel tank into an approved con- tainer.

2. Pour a small amount of suitable solvent into the tank. Install the cap and shake the tank. Drain the solvent completely.

3. Remove the screws holding the fuel joint assembly. Pull the assembly out of the tank.

4. Clean the filter (located on the end of the suction pipe) in a suitable cleaning sol- vent. Allow the filter to dry.

5. Replace the gasket with a new one. Re- install the fuel joint assembly and tighten the screws firmly.

EMU29312

Inspecting and replacing anode(s) Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Yamaha dealer for replacement of external anodes.

CAUTION: ECM00720

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

Recommended gear oil: Hypoid gear oil SAE#90

Gear oil quantity: 250.0 cm (8.45 US oz) (8.82 Imp.oz)

ZMU02065

ZMU02324

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Maintenance

45

NOTE: Inspect ground leads attached to external an- odes on equipped models. Consult a Yamaha dealer for inspection and replacement of inter- nal anodes attached to the power unit.

EMU29390

Checking top cowling Check the fitting of the top cowling by pushing it with both hands. If it is loose have it repaired by your Yamaha dealer.

EMU29400

Coating the boat bottom A clean hull improves boat performance. The boat bottom should be kept as clean of marine growth as possible. If necessary, the boat bot- tom can be coated with an anti-fouling paint approved for your area to inhibit marine growth. Do not use anti-fouling paint which includes copper or graphite. These paints can cause more rapid engine corrosion.

ZMU02067

ZMU01943

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Trouble Recovery

46

EMU29424

Troubleshooting A problem in the fuel, compression, or ignition systems can cause poor starting, loss of pow- er, or other problems. This section describes basic checks and possible remedies, and cov- ers all Yamaha outboard motors. Therefore some items may not apply to your model. If your outboard motor requires repair, bring it to your Yamaha dealer. If the engine trouble warning indicator is flash- ing, consult your Yamaha dealer.

Starter will not operate. Q. Is battery capacity weak or low? A. Check battery condition. Use battery of rec- ommended capacity.

Q. Are battery connections loose or corrod- ed? A. Tighten battery cables and clean battery terminals.

Q. Is fuse for electric start relay or electric cir- cuit blown? A. Check for cause of electric overload and repair. Replace fuse with one of correct am- perage.

Q. Are starter components faulty? A. Have serviced by a Yamaha dealer.

Q. Is shift lever in gear? A. Shift to neutral.

Engine will not start (starter operates). 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 starting procedure incorrect? A. See page 22.

Q. Has fuel pump malfunctioned? A. Have serviced by a Yamaha dealer.

Q. Are spark plug(s) fouled or of incorrect type? A. Inspect spark plug(s). Clean or replace with recommended type.

Q. Are spark plug cap(s) fitted incorrectly? A. Check and re-fit cap(s).

Q. Is ignition wiring damaged or poorly con- nected? A. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.

Q. Are ignition parts faulty? A. Have serviced by a Yamaha dealer.

Q. Is engine stop switch lanyard not at- tached? A. Attach lanyard.

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

Engine idles irregularly or stalls. Q. Are spark plug(s) fouled or of incorrect type? A. Inspect spark plug(s). Clean or replace with recommended type.

Q. Is fuel system obstructed?

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Trouble Recovery

47

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. Have ignition parts failed? A. Have serviced by a Yamaha dealer.

Q. Has warning system activated? A. Find and correct cause of warning.

Q. Is spark plug gap incorrect? A. Inspect and adjust as specified.

Q. Is ignition wiring damaged or poorly con- nected? 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 as specified.

Q. Is thermostat faulty 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 damaged? A. Have serviced by a Yamaha dealer.

Q. Is air vent screw on fuel tank closed? A. Open air vent screw.

Q. Is choke knob pulled out?

A. Return to home position.

Q. Is motor angle too high? A. Return to normal operating position.

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

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

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

Q. Is battery cable disconnected? A. Connect securely.

Warning buzzer sounds or indicator lights. Q. Is cooling system clogged? A. Check water intake for restriction.

Q. Is engine oil level low? A. Fill oil tank with specified engine oil.

Q. Is heat range of spark plug incorrect? A. Inspect spark plug and replace it with rec- ommended type.

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

Q. Is engine oil contaminated or deteriorated? A. Replace oil with fresh, specified type.

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

Q. Has oil feed/injection pump malfunc- tioned? A. Have serviced by a Yamaha dealer.

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Trouble Recovery

48

Q. Is load on boat improperly distributed? A. Distribute load to place boat on an even plane.

Q. Is water pump or thermostat faulty? A. Have serviced by a Yamaha dealer.

Q. Is there excess water in fuel filter cup? A. Drain filter cup.

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

Q. Has warning system activated? A. Find and correct cause of warning.

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

Q. Are spark plug(s) fouled or of incorrect type? A. Inspect spark plug(s). Clean or replace with recommended type.

Q. Are weeds or other foreign matter tangled on gear housing?

A. Remove foreign matter 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. Inspect and adjust as specified.

Q. Is ignition wiring damaged or poorly con- nected? A. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.

Q. Have electrical parts failed? 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 faulty or clogged? A. Have serviced by a Yamaha dealer.

Q. Is air vent screw closed? A. Open the air vent screw.

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

Q. Is fuel joint connection incorrect?

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Trouble Recovery

49

A. Connect correctly.

Q. Is heat range of spark plug incorrect? A. Inspect spark plug and replace it with rec- ommended type.

Q. Is high pressure fuel pump drive belt bro- ken? A. Have serviced by a Yamaha dealer.

Q. Is engine not responding properly to shift lever position? A. Have serviced by a Yamaha dealer.

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 matter tangled on propeller? A. Remove and clean propeller.

Q. Is motor mounting bolt loose? A. Tighten bolt.

Q. Is steering pivot loose or damaged? A. Tighten or have serviced by a Yamaha dealer. EMU29432

Temporary action in emergency EMU29440

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. Inspect the control system and all compo-

nents for damage. Also inspect 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 inspect the out- board motor before operating it again.

EMU29531

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.

WARNING EWM01020

Use this procedure only in an emergen- cy and only to return to 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 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 stop switch lanyard to a secure place on your clothing, or your arm or leg while operating.

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50

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

Avoid accidentally pulling the lanyard 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 objects in the boat to be thrown forward.

Be sure no one is standing behind you when pulling the starter rope. It could whip behind you and injure someone.

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.

EMU29561

Emergency starting engine 1. Remove the top cowling. 2. Remove the start-in-gear protection ca-

ble from the starter, if equipped. 3. Remove the starter/flywheel cover after

removing the bolt(s).

4. Prepare the engine for starting. For fur- ther information, see page 22. Be sure the engine is in neutral and that the en- gine stop switch lanyard lock plate is at- tached to the engine stop switch. The main switch must be (on), if equipped.

5. If equipped the choke knob, pull out it when the engine is cold. After the engine starts, gradually return the choke knob to its home position as the engine warms up.

6. Insert the knotted end of the emergency starter rope into the notch in the flywheel rotor and wind the rope several turns around the flywheel clockwise.

7. Give a strong pull straight out to crank and start the engine. Repeat if neces- sary.

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51

EMU29760

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. If you cannot immediately take the outboard motor to a Yamaha dealer, follow the proce- dure below in order to minimize engine dam- age. EMU29771

Procedure 1. Thoroughly wash away mud, salt, sea-

weed, and so on, with fresh water.

2. Remove the spark plugs and face the spark plug holes downward to allow any water, mud, or contaminants to drain.

3. Drain the fuel from the carburetor, fuel fil- ter, and fuel line.

4. Feed fogging oil or engine oil through the carburetor(s) and spark plug holes while cranking with the manual starter or emer- gency starter rope.

5. Take the outboard motor to a Yamaha dealer as soon as possible.

CAUTION: ECM00400

Do not attempt to run the outboard motor until it has been completely inspected.

ZMU01909

ZMU01910

ZMU01911

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52

EMU29811

Important warranty information for U.S.A. and Canada

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EMU29820

YAMAHA MOTOR CORPORATION, U.S.A. OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY

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55

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EMU29841

IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA

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A5-tate_Blank.fm Page 1 Friday, May 16, 2003 9:00 AM

A5-tate_Blank.fm Page 1 Friday, May 16, 2003 9:00 AM

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Manualsnet FAQs

If you want to find out how the 15MSH Yamaha works, you can view and download the Yamaha 15MSH v6 Owner's Manual on the Manualsnet website.

Yes, we have the Owner's Manual for Yamaha 15MSH 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 15MSH. Full manuals and user guide PDFs can be downloaded from Manualsnet.com.

The best way to navigate the Yamaha 15MSH v6 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 15MSH v6 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 15MSH v6 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 15MSH v6 Owner's Manual, simply download the document to your computer. Once downloaded, open the PDF file and print the Yamaha 15MSH v6 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.