Yamaha BR250TX 2008 Owner's Manual PDF

Pages 70
Year 2008
English en
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Summary of Content for Yamaha BR250TX 2008 Owner's Manual PDF

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Record the frame number, engine number (Primary ID), and key number in the spaces provided for assistance when ordering spare parts from a Yamaha dealer...

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1-INTRODUCTION Congratulations on your purchase of a Yamaha snowmo- bile... This model is the result of Yamahas vast experience in the production of fine sporting and touring snowmo- biles... It represents the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields... This manual will give you an understanding of the opera- tion, inspection, and basic maintenance of this snowmo- bile... If you have any questions concerning the operation or maintenance of your snowmobile, please consult a Yamaha dealer... To maintain the high quality and performance of this snowmobile, it is important that you and your Yamaha dealer pay close attention to the recommended mainte- nance schedules and operating instructions contained within this manual...

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Yamaha continually seeks advancements in product design and quality... Therefore, while this manual con- tains the most current product information available at the time of printing, there may be minor discrepan- cies between your snowmobile and this manual... If there is any question concerning this manual, please consult a Yamaha dealer...

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OPERATION ... 7-1 Starting the engine ... 7-1 Emergency engine starting... 7-2 Break-in ... 7-3 Riding your snowmobile ... 7-4 Getting to know your snowmobile ... 7-4 Learning to ride your snowmobile ... 7-4 To start out and accelerate... 7-4 Braking ... 7-4 Turning ... 7-5 Riding uphill ... 7-5 Riding downhill ... 7-6 Traversing a slope... 7-6 Ice or icy surface ... 7-6 Hard-packed snow ... 7-7 Operation on surfaces other than snow or ice ... 7-7 Maximizing drive track life ... 7-8 Driving ... 7-9 Stopping the engine ... 7-9 Transporting ... 7-10

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Checking the spark plug ... 8-4 Adjusting the engine idling speed... 8-5 Adjusting the throttle cable ... 8-6 Adjusting the oil pump cable... 8-6 Adjusting the carburetor ... 8-7 Adjusting the high altitude settings ... 8-9 Replacing the V-belt ... 8-10 Checking the drive chain housing oil level and the drive chain tension ... 8-11 Checking the brake pads... 8-12 Suspension... 8-13 Adjusting the drive track ... 8-14 Aligning the skis... 8-16 Adjusting the handlebar... 8-17 Lubrication ... 8-17 Replacing a headlight bulb ... 8-18 Adjusting the headlight beam ... 8-18

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EMISSION CONTROL SYSTEM WARRANTY Yamaha Motor Corporation, USA also warrants to the ultimate purchaser and each subsequent purchaser of each 2006 and later model Yamaha snowmobile cov- ered by this warranty that the vehicle is designed, built, and equipped so as to conform at the time of sale with all U... S... emissions standards applicable at the time of manufacture and that it is free from defects in materials and workmanship which would cause it not to meet these standards within the period listed immediately below... Failures other than those resulting from defects in material or workmanship which arise solely as a result of owner abuse and/or lack of proper mainte- nance are not covered by this warranty...

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A... These terms are general and overlap each other in areas... Specific examples include: Running the ma- chine out of oil, hitting an object submerged under snow, operation on surfaces other than snow or ice, operating the machine with a broken or damaged part which causes another part to fail, and so on... If you have any specific questions on operation or maintenance, please contact your dealer for advice...

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If your machine requires warranty service, you must take it to any authorized Yamaha snowmobile dealer within the continental United States... Be sure to bring your warranty identification card or other valid proof of the original date of purchase... If a question or problem arises regarding warranty, first contact the owner of the dealer- ship... Since all warranty matters are handled at the dealer level, this person is in the best position to help you... If you are still not satisfied and require additional assistance, please write:

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AFIN D'VITER TOUT RISQUE DE BLESSURE SRIEUSE OU MME MORTELLE, VEUILLEZ SUIVRE LES RECOMMANDATIONS SUIVANTES: Avant d'utiliser ce vhicule, lire le manuel du propritaire et toutes les tiquettes... Avant de dmarrer le moteur, vrifier l'opration du frein, de l'acclrateur et de la direction... Le frein de scurit doit tre appliqu lors du dmarrage... Ne pas rouler avec le frein de scurit actionn... En cas d'urgence, utiliser l'interrupteur d'arrt du moteur... Ne pas laisser tourner le moteur sans la courroie ou sans son garde... S'assurer que le bouchon du rservoir soit bien referm aprs le remplissage... Afin d'viter tout risque de collision, ne pas rouler sur un chemin public... Ce vhicule est conu pour un conducteur seul - aucun passeger... Toujours porter un casque approuv et un habillement de motoneigiste... Prvoir une protection pour les yeux...

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5... For safety and proper care of the snowmobile, always perform the pre-operation checks on pages 6-16-6 before starting the engine... Check the throttle, brake, and steering for proper operation every time before starting the engine... Make sure that the throttle lever moves freely and it returns to the home position when it is released...

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2... Be careful where you ride... There may be obstacles hidden beneath the snow... Stay on established trails to minimize your exposure to hazards... Ride slowly and cautiously when you ride off of established trails... Hitting a rock or stump, or running into wires could cause an accident and injury...

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2... Never store the snowmobile with fuel in the fuel tank inside a building where ignition sources are present such as hot water and space heaters, an open flame, sparks, clothes dryers, and the like... Allow the engine to cool off before storing the snowmobile in an enclosed space...

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4-DESCRIPTION 1 Ski damper 2 Fuel cock lever 3 Windshield 4 Steering handlebar 5 Seat 6 Drive track 7 Slide rail suspension 8 Frame 9 Skis 0 Engine compartment plate A Shroud B Headlight C Tail/brake light D Snow flap E Tow hitch F Speedometer G Primer pump knob H Engine stop switch I Throttle lever J Starter handle K Shroud latch L Starter lever M Main switch N Headlight beam switch O Brake lever P Parking brake button

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Primer pump knob Pump the primer pump knob several times for easier engine starting in low temperatures...

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Throttle lever Once the engine is running cleanly, squeezing a the throttle lever 1 will increase the engine speed and cause engagement of the drive system... Regulate the speed of the snowmobile by varying the throttle position... Because the throttle is spring-loaded, the snowmobile will deceler- ate, and the engine will return to idle when it is released b...

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Engine stop switch The engine stop switch 1 is used to stop the engine in an emergency... Simply push 2 the stop switch to stop the engine... To start the engine, pull 3 the stop switch and proceed with starting the engine... (See page 7-1 for more details... ) During the first few rides, practice using the stop switch so that you can react quickly in an emergency...

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Parking brake button When parking the snowmobile or starting the engine, apply the parking brake... Squeeze the brake lever 1, push and hold the parking brake button 2 down 3, and then release the brake lever... To release the parking brake, squeeze the brake lever...

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Shroud latches To open the shroud, unhook the shroud latches, and then slowly raise the shroud forward until it stops... When clos- ing the shroud, slowly lower it to its home position, and then hook the shroud latches...

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Fuel cock This snowmobile is equipped with a fuel cock that con- trols the flow of fuel in the fuel lines... The fuel cock has the following three positions... 1 OFF: Fuel does not flow with the fuel cock lever in this position... The engine cannot be started... 2 ON: Fuel flows from the main tank to the carburetor with the fuel cock lever in this position... The engine can be started and operated... The fuel cock lever should usually be kept in the ON position while operating the snowmobile... 3 RES: Fuel flows from the reserve tank to the carburetor with the fuel cock lever in this position... The snowmobile can be operated for a shorter time... If the snowmobile runs out of fuel in the ON position, turn the fuel cock lever to the RES position...

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Engine compartment plate, side plate, and recoil starter seal This snowmobile is equipped with an engine compart- ment plate 1 that can be opened to cool down the engine...

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To prevent early wear of the V-belt, avoid traveling under 10 km/h (6... 2 mph) when towing for long peri- ods... @

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The engine and muffler will be very hot after the engine has been run... Avoid touching the engine and muffler while they are still hot with any part of your body or clothing during inspection or repair... @

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Oxygenated fuels (gasohol) containing a maxi- mum 5% of ethanol can be used, although richer jetting may be required to prevent engine dam- age... Consult a Yamaha dealer... Gasohol contain- ing methanol is not recommended...

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2... Hold the pivot point of the throttle lever away from the throttle switch by putting your thumb (above) and forefinger (below) between the throttle lever pivot 1 and the engine stop switch housing 2... While holding the pivot point as described above, press the throttle lever 3 gradually... The T... O... R... S... will operate and the engine should stop immediately...

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Brake Test the brake at a low speed when starting out to make sure that it is working properly... If the brake does not pro- vide proper braking performance, inspect the brake for wear... (See page 8-12 for more details... )

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Do not operate the snowmobile if you find damage to the drive track, or if it has been maladjusted... Drive track damage or failure could result in loss of brak- ing ability and snowmobile control, which could cause an accident... @

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Tool kit and recommended equipment It is good practice to carry the tool kit, spare parts, and other necessary equipment with you while riding the snowmobile so that minor repairs can be done if neces- sary... The following should be carried at all times: Tool kit Flashlight Roll of plastic tape Steel wire Tow rope Emergency starter rope V-belt Light bulbs Spark plugs When you start out for a long distance trip, extra fuel and oil should be carried as well...

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3... Pull slowly on the recoil starter until it is engaged, and then pull it briskly... After the engine starts, warm up the engine until it does not run roughly or begin to stall when the starter lever (choke) is returned to the closed position...

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Emergency engine starting If the recoil starter system should fail, take the emer- gency starter rope and the screwdriver handle out of the tool kit and proceed as follows...

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Break-in There is never a more important period in the life of your snowmobile than the break-in period... For the first 10 hours, approximately 200 km (125 mi), do not put an excessive load on the engine... Avoid prolonged full throt- tle operation... Also avoid lugging the engine, such as laborious opera- tion in wet snow... If any abnormal condition is noticed, such as excessive vibration or noise, consult a Yamaha dealer...

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Getting to know your snowmobile A snowmobile is a rider active vehicle, and your riding position and your balance are the two basic factors of maneuvering your snowmobile... Riding your snowmobile requires skills acquired through practice over a period of time... Take the time to learn the basic tech- niques well before attempting more difficult maneuvers... Riding your new snowmobile can be a very enjoyable activity, providing you with hours of pleasure... However, it is essential to familiarize yourself with the operation of the snowmobile to achieve the skill neces- sary to enjoy riding safely... Before operating the snowmobile, read this Owners Manual completely and understand the operation of the controls... Pay particular attention to the safety infor- mation on pages 3-13-3... Please read all warning and caution labels on your snow- mobile... Also, read the Snowmobilers Safety Handbook that is supplied with your snowmobile...

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You should practice first on gentle slopes... Try more difficult climbs only after you have developed your skill... As you approach a hill, accelerate before you start the climb, and then reduce the throttle to prevent track slippage... It is also important to keep your weight on the uphill side at all times... On climbs straight up the hill, this can be accomplished by leaning forward and, on steeper inclines, standing on the running boards and leaning forward over the han- dlebar... (Also see Traversing a slope... ) Slow down as you reach the crest of the hill, and be prepared to react to obstacles, sharp drops, or other vehicles or people which may be on the other side... If you are unable to continue up a hill, do not spin the track... Stop the engine and set the parking brake... Then pull the rear of the snowmo- bile around to point the snowmobile back down the hill... When the snowmobile is pointed downhill, mount your snowmobile from the uphill side... Restart the engine, release the parking brake, and descend the hill...

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downhill leg on the seat and the foot of your uphill leg on the running board... This position will make it easier for you to shift your body weight as needed... Snow and ice are slippery, so be prepared for the possibility that your snowmobile could begin to slip sideways on the slope... If this happens, steer in the direction of the slide if there are no obstacles in your path... As you regain proper balance, gradually steer again in the direction you wish to travel... If your snowmobile starts to tip, steer down the hill to regain balance...

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All of the above surfaces have one thing in common in regard to drive track and slide runners; little or no lubricating ability... Drive track and all slide rail systems require lubrication (snow or water) between the slide runners and the slide metal... In the absence of lubrication, the slide runners will rapidly wear and in severe cases, liter- ally melt away, and the drive track will be subject to damage or failure... Also traction aids such as studs, cleats, etc... , may cause further track damage or failure...

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Track tension During initial break-in, the new drive track will tend to stretch quickly as the track settles... Be sure to correct the track tension and alignment frequently... (See pages 8-148-16 for adjustment procedures... ) A loose track can slip (ratchet), derail or catch on suspension parts causing severe damage... Do not overtighten the drive track, otherwise it may increase the friction between the track and the slide runners, resulting in the rapid wear of both components... Also, this may put an excessive load on the suspension components, resulting in component failure...

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3... Turn the handlebar in the desired direction... 4... Squeeze the brake lever to stop the snowmobile... 5... Apply the parking brake squeeze the brake lever,

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than the bottom of the carburetors... Otherwise, the vibration and bumps from the road surface could make it possible for fuel to flow through the carbure- tors into the crankcase... This can result in hydrostatic lock, a condition where the engine cannot rotate because of fuel accumulated in the engine... Severe engine damage can result from hydrostatic lock... When possible, the fuel tank should be empty during transportation, especially if the trip will be longer than 30 minutes...

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Check deflection, and for wear and damage... Adjust/replace if necessary...

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Inspect sheaves for wear/ damage... Inspect weights/rollers and bushings for wear-for primary... Inspect ramp shoes/bushings for wear-for secondary... Replace if necessary...

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Checking the spark plug The spark plug is an important engine component and is easy to inspect... The condition of the spark plug can indi- cate the condition of the engine... Check the coloration on the white porcelain insulator around the center electrode... The ideal coloration at this point is a medium to a light tan color for a snowmobile that is being ridden normally... If a spark plug shows a distinctly different color, there could be something wrong with the engine... For example, a very white center electrode porcelain color could indi- cate an intake track air leak or carburetion problem for that cylinder... Do not attempt to diagnose such problems yourself... Instead, take the snowmobile to a Yamaha dealer for inspection and possible repairs... You should periodically remove and inspect the spark plug because heat and deposits will cause a spark plug to slowly break down and erode... Consult a Yamaha dealer before chang- ing to a different type of spark plug...

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Spark plugs are produced in several different thread lengths... The thread length or reach is the distance from the spark plug gasket seat to the end of the threaded portion... If the reach is too long, overheating and engine damage may result... If the reach is too short, spark plug fouling and poor performance may result... Also, if the reach is too short, carbon will form on the exposed threads resulting in combustion chamber hot spots and thread damage... Always use a spark plug with the speci- fied reach...

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1... Loosen the locknut... 2... Pull the oil pump outer cable and adjust the free play

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Under some operating conditions, the carburetor settings may have to be changed due to air temperature changes, elevation changes, use of oxygenated fuels (gasohol), etc... These settings should be made by a Yamaha dealer...

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Never remove the drain plug or the float chamber while the engine is hot... Fuel will flow out from the float chamber, and could ignite and cause injury...

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Adjusting the high altitude settings Operating at high altitude reduces the performance of a gasoline engine to about 3% for every 305 m (1,000 ft) of elevation... This is because there is less air as altitude increases... Less air means less oxygen available for com- bustion... Your snowmobile can be adjusted to overcome most of the problems found in high altitude riding... Carburetor adjustments are the most important... Less air at high alti- tude makes the air/fuel ratio too rich, which can cause poor performance... Common problems are hard starting, bogging, and plug fouling... Follow the Main Jet Setting chart which is available at a Yamaha dealer carefully... Proper carburetion adjustments will correct the air/fuel ratio... Remember: less air at higher altitude means there is less horsepower available, even with proper carburetion... Expect accelera- tion and top speed to be reduced at higher altitudes... To overcome operating with less power at high altitudes, your snowmobile may also require different settings for the drive chain gears and V-belt clutch to avoid poor per- formance and rapid wear... If you plan to operate your snowmobile at an altitude different from the area where you bought it, be sure to consult a Yamaha dealer... They can tell you if there are any changes necessary for the altitude where you plan to ride...

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6... Rotate the secondary sliding sheave clockwise 4 and push 5 it so that it separates from the secondary fixed sheave...

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In order to adjust the chain tension properly, make sure that the oil seal 3 is not stuck to the surface of the drive chain housing 4 when turning the adjuster... @

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Checking the brake pads Check the brake pads for wear by measuring the thick- ness of each pad... If the brake pads reach the wear limit, have a Yamaha dealer replace them...

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Suspension The suspension can be adjusted to suit rider preference... A softer setting, for example, may provide greater rider comfort, while a harder setting may allow more precise handling and control over certain types of terrain or riding conditions...

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Inspect the drive track condition frequently... Replace damaged slide metal... Replace the drive track if it is damaged to the depth where fabric reinforcement material is visible or support rods are broken... Otherwise, track damage or failure could result in loss of braking ability and snow- mobile control, which could cause an accident...

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2... Loosen the rear axle bolt 1 on both sides... 3... Start the engine and rotate the drive track one or two

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Aligning the skis 1... Turn the handlebar so the skis face straight ahead... 2... Check the following for ski alignment: a... Skis are facing forward... b... Ski toe-out (1 2) is within specification...

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Apply a dab of grease onto the cable ends only... Do not grease the brake and throttle cables themselves because they could become frozen, which could cause loss of control... @

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Keep oil or your hands away from the glass part of the bulb or its life and illumination will be affected... If the glass is oil stained, thoroughly clean it with a cloth moistened with alcohol or lacquer thinner... @

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2... Hydrolock occurs when fuel has filled the crankcase when the vehicle has been transported... ... Remove the spark plugs and turn the engine over several times with the ignition off to expel excess fuel... Ask a Yamaha dealer to inspect...

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object is caught in the drive track, or the slide runners have melted to the slide metal due to lack of lubrication...

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3... Fuel system preparation Add Yamaha Fuel Stabilizer and Condi- tioner, or an equivalent stabilizer, to the fuel tank to help prevent fuel oxidation and gum and varnish deposits, and to inhibit corrosion in the fuel system and carbure- tor... In areas where oxygenated fuel (gaso- hol) is used, completely drain the fuel system... Ask a Yamaha dealer if further information is needed...

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Returning to service after storage When returning your snowmobile to ser- vice, reinstall the V-belt and adjust the drive track... Remove the spark plugs and clean or replace them if necessary... Per- form all other pre-operation and seasonal maintenance checks listed in the periodic maintenance chart... For peak performance, it is recommended that you have your snowmobile checked and tuned by a Yamaha dealer... They have the experience and training to help you get the maximum performance and use of your Yamaha snowmobile...

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Bore Stroke 70... 0 64... 0 mm (2... 76 2... 52 in) Idle speed 1,100 100 r/min Engine oil type YAMALUBE 2-cycle oil Carburetor type KEIHIN, BD32-28 1 Fuel Unleaded gasoline

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infinitely variable 3... 5:11:1 Sheave distance Approx... 266 mm (10... 47 in) Sheave offset Approx... 11 mm (0... 43 in) Engagement speed Approx... 3,200 r/min Shift speed Approx... 5,900 r/min Drive chain Single roller chain enclosed in oil bath Reduction ratio 24/10 (2... 40)

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Gap 0... 60... 7 mm (0... 0240... 028 in) Headlight Bulb Quantity 12 V, 60/55 W 1 Tail/brake light Bulb Quantity 12 V, 8/23 W 1 Meter light Bulb Quantity 12 V, 3... 4 W 1

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