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RS90NL/NRL/ML/GTL, RSG90L Owner`s Manual

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2. 8 33 832 064 ESU02082 Replacing a headlight bulb 1 Lift up the shroud 2 Disconnect the headlight coupler 3 Remove the bulb holder cover 4 Unhook the bulb holder by pushing it in then upward Bulb holder cover Bulb holder 5 Remove the bulb A WARNING Keep flammable products and your hands away from the hot bulb until it has cooled down 6 Install the new bulb and then hook the bulb holder onto the headlight unit Bulb type 12 V 60 55 W 7 Install the bulb holder cover and then connect the headlight coupler Keep oil and 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 ESU03721 Adjusting the headlight beam 1 Lift up the shroud 2 Insert a Phillips screwdriver into the hole under the shroud to access the headlight beam adjuster 3 Turn the headlight beam adjuster to adjust the head light beam Headlight beam movement Down Up 8 34 ESU00355 Battery This snowmobile is equipped with a sealed type MF battery which does not require any maintenance There is no need to check the electrolyte or to add distilled water To charge the battery Have a Yamaha dealer charge the battery as soon as possible if it seems to have discharged Keep in mind that the battery tends to discharge more qu
3. e e Make sure that the engine stop switch is in the on posi tion The starter motor cannot be operated when the engine stop switch is in the off position 1 Fully open the starter lever choke D Starter lever choke Fully open cold engine starting 3 Half open warm engine up Closed warm engine starting NOTE The starter lever choke is not required when the engine is warm Put the starter lever choke in the closed posi tion 2 Turn the main switch to the START position After the engine starts put the starter lever choke in the half open position Warm up the engine until it does not run roughly or begin to stall when the starter lever is returned to the closed position START e Release the switch immediately after the engine starts e If the engine fails to start release the switch wait a few seconds then try again Each attempt should be as short as possible to preserve the battery Do not crank the engine more than 10 seconds on any one attempt 7 1 ESU00380 Break in There is never a more important period in the life of your engine than the period between 0 and 500 km 300 mi For this reason you should read the following material carefully Since the engine is brand new do not put an excessive load on it for the first 500 km 300 mi The various parts in the engine wear and polish themselves to the correct operating clearances During this p
4. 8 18 Checking the brake fluid level 8 19 Changing the brake fluid 8 19 8 19 Adjusting the drive track 8 29 Aligning the skis 8 31 Adjusting the handlebar 8 31 Lubrication 8 33 Replacing a headlight bulb 8 34 Adjusting the headlight beam 8 34 Battery tdeo 8 35 Replacing a 8 35 TROUBLESHOOTING 9 1 STORAGE IE RES 10 1 SPECIFICATIONS 11 1 11 1 Engine isa 11 2 ChaSSiS ut is ens 11 2 Electric ederent 11 4 WIRING DIAGRAM 12 1 ESU05070 YAMAHA MOTOR CORPORATION U S A SNOWMOBILE LIMITED WARRANTY Yamaha Motor Corporation U S A hereby warrants that new Yamaha snowmobiles purchased from an autho rized Yamaha snowmobile dealer in the continental United States will be free from defects in material and workman ship for the period of time stated herein subject to certain stated limitations WARRANTY PERIOD 1 All Yamaha snowmobiles shall be warranted for a term of one 1 year from the date of purchase plus a special early season extension if applicable 2 All Yamaha snowmobile clutch components are war ranted against abnormal wear for one 1 year from t
5. Apply the parking brake before starting the engine Never drive the snowmobile with the parking brake applied This may overheat the brake disc and reduce braking ability 3 1 7 Do not allow anyone to stand behind the snowmobile when starting inspecting or adjusting the snowmo bile A broken track track fittings or debris thrown by the track could be dangerous to the operator or bystanders 8 Handle fuel with care it is HIGHLY FLAMMABLE Never add fuel when the engine is running or hot Allow the engine to cool for several minutes after running e Use an approved fuel container e Fil the fuel tank outdoors with extreme care Never remove the fuel cap indoors Never fill the fuel tank indoors e Never refuel while smoking or in the vicinity of an open flame e Make sure that the fuel tank cap is closed securely after refueling Wipe up any spilled fuel immedi ately 9 If you swallow some gasoline inhale a lot of gasoline vapor or get some gasoline into your eyes see your doctor immediately If any gasoline spills on your skin or clothing immediately wash your skin with soap and water and change your clothes 10 Wear protective clothing Wear an approved helmet and a face shield or goggles Also wear a good qual ity snowmobile suit boots and a pair of gloves or mit tens that will permit use of your thumbs and fingers for operation of the controls 851 001 Operation 1 Do not run the engine
6. Tightening torques Crankcase engine oil drain bolt 10 Nm 1 0 m kgf 7 2 ft lb Oil tank engine oil drain bolt 16 Nm 1 6 m kgf 11 ft lb 11 Add 2 0 L 1 8 Imp qt 2 1 US qt of the recom mended engine oil to the oil tank and then install and tighten the oil level gauge dipstick and the cylinder head cap Recommended engine oil See page 6 2 Oil quantity With oil filter cartridge replacement 3 0 L 2 6 Imp qt 3 2 US qt Without oil filter cartridge replacement 2 8 L 2 5 Imp qt 3 0 US qt Total amount 3 7 L 3 3 Imp qt 3 9 US qt 12 Start the engine warm it up for several minutes and then turn it off 800 049 13 Add sufficient oil of the recommended type to raise it to the F level mark on the oil level gauge dipstick See page 6 3 for the checking procedure e When adding the engine oil be careful not to fill above the F level mark on the oil level gauge dipstick e Make sure that no foreign material enters the engine oil tank 14 Start the engine and then let it idle for several min utes while checking it for oil leakage If oil is leaking immediately turn the engine off and make sure the engine oil drain bolts cylinder head cap and oil level gauge dipstick are installed correctly 15 Turn the engine off connect the oil level gauge cou pler and then install the bottom panel and right side cover If oil is leaking or the oil level warning indicator comes o
7. A WARNING Check the throttle brake and steering for proper operation before starting the engine ESU00361 Engine overheating prevention system This model is equipped with an engine overheating pre vention system to prevent overheating when the engine is idling When the engine has been idling for at least 3 minutes and the coolant temperature has risen above 100 C 212 F the engine automatically shuts off to prevent overheating NOTE The engine can be started after it shuts off 5 2 ESU04151 Throttle override system T O R S If the carburetor or throttle cable should malfunction dur ing operation the T O R S will operate when the throttle lever is released The T O R S is designed to interrupt the ignition and keep the engine speed between 2 800 and 3 000 r min if the carburetor fails to return to idle when the lever is released A WARNING e If the T O R S is activated make sure that the cause of the malfunction has been corrected and that the engine can be operated without a prob lem before restarting the engine e Besureto use the specified spark plug and spark plug cap Otherwise the T O R S will not work properly Idling starting Running Trouble Item Throttle switch Off On Off Throttle position sensor Closed Open Open T O R S Engine Run Run will operate A Idling starting B Running C Trouble D T
8. Improper fuel flow See A 1 above 5 Incorrect V belt clutch settings for alti tude or conditions Ask a Yamaha dealer to inspect E Engine constantly backfires or mis fires 1 Faulty spark plugs spark plugs Replace the 2 Clogged fuel system See A 1 above 3 Malfunctioning T O R S system See A 2 above F Engine overheats 1 Insufficient coolant Add coolant 2 Air in cooling system Bleed air or ask a Yamaha dealer to inspect 3 Leaking coolant Ask a Yamaha dealer to inspect G 1 Problem with the driveline Worn or Snowmobile does not move Malfunctioning V belt clutch Ask a Yamaha dealer to inspect Drive track does not move Foreign object is caught in the drive track or slide runners have melted to the slide metal due to lack of lubrication Tight loose or broken drive chain Ask a Yamaha dealer to inspect V belt twists Improper V belt Replace with the correct V belt Incorrect V belt clutch offset Ask a Yamaha dealer to inspect Loose or broken engine mount Ask a Yamaha dealer to inspect V belt slips or burns Oily or dirty V belt or primary and sec ondary sheave assembly surfaces Clean See H above Engine does not upshift or down shift properly or engages harshly Worn or damaged V belt Replace the V belt or ask a Yamaha dealer to inspect Incorrect V belt clutch setting
9. Please read all warning and caution labels on your snowmobile Also read the Snow mobilers Safety Handbook that is supplied with your snowmobile Learning to ride your snowmobile Before you ride always perform the pre operation checks listed on pages 8 1 8 4 The short time spent checking the condi tion of the snowmobile will be rewarded with added safety and a more reliable snowmobile Always wear the proper cloth ing for both warmth and to help protect you from injury if an accident occurs Become familiar with operating your snow mobile at low speeds even if you are an experienced rider Do not attempt to oper ate at maximum performance until you are 7 8 totally familiar with the snowmobile s han dling and performance characteristics Set the parking brake and follow the instructions on pages 7 1 7 2 to start the engine Once the engine has warmed up you are ready to begin riding your snow mobile To start out and accelerate 1 With the engine idling release the parking brake 2 Apply the throttle slowly and smoothly The V belt clutch will engage and you will start to accelerate A WARNING The operator should always keep both hands on the handlebar Never put your feet outside the running boards Avoid high speeds until you have become thoroughly familiar with your snowmo bile and all of its controls Braking When slowing down or stopping release the throttle and apply the brake gently not sudd
10. age It generally takes several feet of snow to provide a good overall base to properly cover debris such as rocks logs etc If snow coverage is not sufficient stay on trails to avoid impact damage to the drive track Studded track In general track life will be shortened when studs are installed Drilling stud holes into the drive track will cut the internal fibers which weakens the track Avoid spin ning the drive track Studs may catch on an object and pull out of the track leaving tears and damage around the already weakened area To minimize possible dam age consult your stud manufacturer for installation and stud pattern recommendations Yamaha does not recommend track studding 7 7 ESU00245 Strap For RS90M The strap should be used only by experienced opera tors to assist them when traverse side hill riding A WARNING Improper use of the strap on the handlebar can result in severe injury or death Use the strap only as an operator grip point when needed to shift weight uphill to maintain balance during traverse side hill riding Only experi enced operators should traverse slopes steep enough to require strap use Keep the right hand on the right handlebar grip for steering and grip the strap with the left hand to shift weight uphill for balance during traverse riding Ride cautiously while using the strap Do not accelerate or decelerate abruptly while holding onto the strap Do not use the s
11. 3 warn the rider of the above problems by flashing continuously When this occurs have a Yamaha dealer inspect the snowmobile as soon as possible ESU00377 Oil level warning indicator The oil level warning indicator and the warning light 2 come on when the engine oil level is low If the oil level warning indicator and the warning light come on place the snowmobile on a level surface and allow it to idle for one minute If the oil level warning indicator and the warning light go off the engine oil level is sufficient however it is getting low Add engine oil as soon as possible If the oil level warning indicator and the warning light do not go off check the engine oil level in the oil tank see page 6 3 and add engine oil if necessary ESU04171 Low coolant temperature indicator light The low coolant temperature indicator light comes on when the coolant temperature is low and informs the rider that the snowmobile must be warmed up After the engine is started warm it up until the indicator light goes off The snowmobile can be operated normally after the indi cator light goes off NOTE Operate the snowmobile at low speeds when the low coolant temperature indicator light is on If the engine speed is too high the warning light and self diagnosis warning indicator will flash and the two digit code 86 will flash slowly in the tripmeter odometer display When this occurs the engine control system pr
12. Adjust synchronization of car buretors Check for leakage Exhaust system Tighten or replace gasket if e necessary Itis recommended that these items be serviced by a Yamaha dealer ESU04980 General maintenance and lubrication chart Initial Every Pre 1 month Seasonally operation or or check 800 km 4 000 km Daily 500 mi 2 500 mi 40hr 200 hr Remarks Check oil level e Replace e e Every Replace e 20 000 km 12 000 mi Engine oil Engine oil filter cartridge Fuel Check fuel level Check coolant level Engine coolant Air bleed the cooling system if necessary Throttle lever carburetor side Throttle lever Check operation handlebar side Repair if necessary Throttle override Check operation system T O R S Repair if necessary Check operation Repair if necessary Check throttle lever operation Engine stop switch Itis recommended that these items be serviced by a Yamaha dealer 8 2 Initial Every rues ds seasonally l or Item Remarks check 800km 4 000 km Page Daily 500 mi 2 500 mi 40 hr 200hr Check for cracks bends or Drive guard damage e 5 11 6 7 Replace if necessary Check for wear and damage 6 7 Men Replace if necessary 8 14 8 16 Drive track and idler Check deflection and for
13. RS90M RS90GT 30 35 mm 1 18 1 38 in 100 N 10 kg 22 Ib For RSG90 25 30 mm 0 98 1 18 in 100 N 10 kg 22 Ib 3 If the deflection is incorrect adjust the drive track 8 29 820 131 Adjusting the drive track A WARNING e Be sure to have a Yamaha dealer make this adjustment e Support the snowmobile securely on a suitable stand before working underneath the snowmo bile e Operate the engine in a well ventilated area 1 Lift the rear of the snowmobile onto a suitable stand to raise the drive track off the ground 2 Loosen the rear axle nut 3 Start the engine and rotate the drive track one or two turns Stop the engine 4 Check the drive track alignment with the slide runners If the alignment is incorrect align the drive track by turning the left and right adjusters pides Shifted to right Shifted to left 3 Left adjuster Turn out Turn in Right adjuster Turn in Turn out Slide runners Drive track Slide metal 8 Gap D Forward 5 Adjust the drive track deflection to specification Drive track deflection More than specified Less than specified 3 Left adjuster Turn in Turn out Right adjuster 8 30 Turn in Turn out The right and left adjusters should be turned to an equal amount 6 Recheck alignment and deflection If necessary repeat step
14. The oil filter cartridge should be replaced every 20 000 km 12 000 mi of operation To change the engine oil with or without oil filter cartridge replacement 1 Place the snowmobile on a level surface and apply the parking brake 2 Remove the bottom panel 1 and right side cover 3 Start the engine warm it up for several minutes and then turn it off 4 Place oil pans under both the engine and the oil tank to collect the used oil 5 Disconnect the oil level gauge coupler 6 Remove the oil level gauge dipstick 4 and the cylin der head cap and then remove the crankcase engine oil drain bolt and the oil tank engine oil drain bolt 7 to drain the oil from the crankcase and the oil tank NOTE SSS A 7 mark is stamped on the crankcase near the crankcase engine oil drain bolt e Dispose of used oil according to local regulations e Skip steps 7 9 if the oil filter cartridge is not being replaced 8 9 7 Remove the oil filter cartridge 9 with an oil filter wrench NOTE An oil filter wrench is available at a Yamaha dealer 8 Apply a thin coat of engine oil to the O ring of the new oil filter cartridge 9 Install the new oil filter cartridge with an oil filter wrench and then tighten it to the specified torque Tightening torque Oil filter cartridge 17 Nm 1 7 m kgf 12 ft lb 10 Install the engine oil drain bolts and then tighten them to the specified torques
15. indoors except when starting the engine to transport the snowmobile in or out of the building Open the outside doors exhaust fumes are dangerous 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 3 2 This snowmobile is not designed for use on surfaces other than snow or ice Use on dirt sand grass rocks or bare pavement may cause loss of control and may damage the snowmobile Avoid operating on glare ice or on snow which has a lot of dirt or sand mixed in Operation under such conditions will damage or result in rapid wear of ski runners drive track slide runners and drive sprock ets Always ride with other snowmobilers when going on a ride You may need help if you run out of fuel have an accident or damage your snowmobile Many surfaces such as ice and hard packed snow require much longer stopping distances Be alert plan ahead and begin decelerating early The best braking method on most surfaces is to release the throttle and apply the brake gently not suddenly Maintenance and storage 1 Do not leave the snowmobile on its left side for an extended period of time Fuel may leak out from the fuel breather hose Modifications made to the snowmo
16. n 7 3 Auxiliary DC jack 5 10 Turning eene 7 4 Shroud latCheS rene 5 11 Riding uphill 7 4 Riding downhill 7 5 Traversing a slope 7 5 Ice or icy surface 7 5 Hard packed 7 6 Operation on surfaces other than SNOW OF ice 7 6 Maximizing drive track life 7 7 Oltap qose 7 8 Driving eren a nent 7 9 Stopping the engine 7 10 Transporting 7 11 PERIODIC MAINTENANCE 8 1 Periodic maintenance chart for the emission control system 8 1 General maintenance and lubrication Chart 8 2 ToolKit 8 5 Checking the spark plugs 8 5 Adjusting the engine idling speed 8 7 Adjusting the throttle cable 8 7 Adjusting the carburetors 8 7 Adjusting the high altitude settings tiere 8 8 Adjusting the valve clearance 8 8 Changing the engine oil 8 9 Cooling system 8 12 Replacing the V belt 8 14 Checking the drive chain housing oil level and the drive chain tension 8 16 Checking the brake pads 8 18 Checking the parking brake pads
17. other than as shown in the Owner s Manual that failure may not be covered under warranty What responsibility does my dealer have under this warranty Each Yamaha snowmobile dealer is expected to 1 Completely set up every new machine before sale 2 Explain the operation maintenance and warranty requirements to your satisfaction at the time of sale and upon your request at any later date 3 In addition each Yamaha snowmobile dealer is held responsible for his setup service and warranty repair work Whom should contact if have further questions about this warranty Your Yamaha snowmobile dealer has the informa tion and experience necessary to answer almost any questions about this warranty If the dealer is not able to do so he is expected to contact Yamaha Motor Corporation U S A for clarification or assistance CUSTOMER SERVICE 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 YAMAHA MOTOR CORPORATION U S A CUSTOMER RELATIONS DEPA
18. the adjuster 20 clicks 11 clicks 1 click out out out Standard Maximum Adjuster position Turns out lt Turnsin gt Soft Hard With the adjuster fully turned lightly in direction 8 Damping force e Do not continue to turn the adjuster in direction 8 after it stops The shock absorber can be damaged and damping force adjustments cannot be made e Do not turn the adjuster in direction more than 20 clicks Even if the adjuster is continually turned after 20 clicks there will be no change in the damping force e Be sure to stop the adjuster at a position where there is a click A WARNING This shock absorber contains highly pressurized nitrogen gas It could explode by improper handling causing injury or property damage e Do not tamper with or attempt to open the shock absorber e Do not subject the shock absorber to an open flame or other high heat source which could cause it to explode e Do not deform or damage the shock absorber in any way e Do not dispose of a worn or damaged shock absorber by yourself Take the unit to a Yamaha dealer 8 26 ESU04092 Adjusting the control rods The weight transfer can be adjusted by turning the con trol rod adjuster or adjusting nut For RS90R RS90GT RSG90 1 Loosen the locknut 2 Turn the control rod adjuster 2 in direction 8 to increase weight transfer or
19. the air filter case and the engine could be damaged Checking the engine oil level 1 Place the snowmobile on a level surface and apply the parking brake 2 Start the engine warm it up for 10 15 minutes and then turn it off NOTE mM e The engine can also be warmed up by operating the snowmobile for 10 15 minutes e After operating the snowmobile allow the engine to idle for at least 10 seconds before turning it off 3 Disconnect the oil level gauge coupler 1 Disconnect the oil level gauge coupler before remov ing the oil level gauge dipstick Otherwise the cable can twist and break 4 Remove the oil level gauge dipstick 2 wipe it clean insert it back into the filler hole without screwing it in and then remove it again to check the oil level NOTE The engine oil should be between the F 3 and E 2 level marks on the oil level gauge dipstick 5 If the engine oil is below the E level mark add suffi cient oil of the recommended type to raise it to the F level mark See page 6 2 for the recommended oil e When adding the engine oil be careful not to fill above the F level mark on the oil level gauge dipstick e Make sure that no foreign material enters the engine oil tank 6 3 6 Insert the oil level gauge dipstick into the oil filler hole and then tighten it securely 7 Connect the oil level gauge coupler ESU00086 Coolant Check the coolant level in the cool
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21. 12 Disconnect the red jumper cable from the red connecting lead and then pull the cover completely over the lead terminal 13 Install the red lead into the lead holder NOTE Make sure that both the red lead and the black lead are seated securely in the lead holders A WARNING Be sure to pull the lead covers back over the terminals completely If the ter minals are exposed they could come into contact with the frame or a metal part of the snowmobile and this can cause electrical system damage or A FIRE HAZARD C Electric starter does not operate or operates slowly 1 Engine stop switch is pushed in Pull it out 2 Faulty wire connections Check con nections or ask a Yamaha dealer to inspect 3 Discharged battery Charge battery or see B above 9 3 4 Seized engine Seizure is caused by poor lubrication inadequate fuel or an air leak Ask a Yamaha dealer to inspect 5 Hydrostatic lock occurs when fuel has filed the cylinders 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 D Engine power is low 1 Low coolant temperature indicator light is flashing Warm the engine up 2 Faulty spark plugs Clean or replace the spark plugs 3 Incorrect jetting for altitude or tempera ture Carburetor Ask a Yamaha dealer to inspect 4
22. ANT ARE THE MAINTENANCE SERVICES RELATED TO EMISSIONS CONTROL THESE SER VICES NOT ONLY ENSURE CLEANER AIR BUT ARE ALSO VITAL TO PROPER ENGINE OPERATION AND MAXIMUM PERFORMANCE IN THE FOLLOWING PERI ODIC MAINTENANCE CHARTS THE SERVICES RELATED TO EMISSIONS CONTROL ARE GROUPED SEPARATELY THESE SERVICES REQUIRE SPECIALIZED DATA KNOWLEDGE AND EQUIPMENT YAMAHA DEALERS ARE TRAINED AND EQUIPPED TO PERFORM THESE PARTICULAR SERVICES ESU04970 Periodic maintenance chart for the emission control system Initial Every Mom 1 month Seasonally 1 Remarks check 800 km Daily 500 mi 40 hr 200 hr Check condition Spark plugs Adjust gap and clean e Replace if necessary Check clearance Valve clearance Adjust clearance when engine Every 40 000 km 25 000 mi is cold Check breather hose for cracks or damage Replace if necessary Check condition Replace if necessary Crankcase breather system Fuel filter tis recommended that these items be serviced by a Yamaha dealer 8 1 Initial Every Pre 1 month Seasonally operation or Remarks or check 800 km 4 000 km Daily 500 mi 2 500 mi 40 hr 200 hr Check fuel hose for cracks or Fuel line damage e Replace if necessary Check and adjust engine idle speed dle speed e e Whenever operating condition POLST ING Tels elevation temperature is changed Carburetors
23. ED OR IMPLIED ALL IMPLIED WAR RANTIES OF MERCHANTABILITY AND FIT NESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE OBLIGATIONS AND TIME LIM ITS STATED IN THIS WARRANTY ARE HEREBY DISCLAIMED BY YAMAHA MOTOR CORPO RATION U S A AND EXCLUDED FROM THIS WARRANTY SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU ALSO EXCLUDED FROM THIS WARRANTY ARE ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING LOSS OF USE SOME STATES DO NOT AL LOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAM AGES SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU THIS WARRANTY GIVES YOU SPECIFIC LE GAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE SPECIAL EARLY SEASON WARRANTY EX TENSION A special warranty extension is available for all new Yamaha snowmobiles purchased between June 1 and December 1 All new Yamaha snowmobiles purchased between June 1 and December 1 will have the warranty extended to November 30 of the following year YAMAHA MOTOR CORPORATION U S A Post Office Box 6555 Cypress California 90630 WARRANTY QUESTIONS AND ANSWERS Q A What costs are my responsibility during the warranty period The customer s responsibility includes all costs of normal maintenance services non warranty repairs accident and collision damages as well as oil spark plugs clutch drive belts and slide runners What are some ex
24. GT RSG90 SUSPENSION ADJUSTMENT CHART Damping torce adjustment glage de la force d amortissement Adjustment dial s turhing direction TABLEAU DES R GLAGES DE LA SUSPENSION Be sure to have a Yamaha dealer make these adjustments Damping force Softer 4 Harder Ces r glages doivent tre effectu s par un concessionnaire Yamaha Sens de tournage s H Spring preload adjustments de la molette de r glage Plus Plus R glage de la pr contrainte de ressort Force d amortissement souple dure Front spring Ressort des skis i Spring seat WORTEN length SENE Adjuster C turnin 9 direction Prelcad Harder Softer Weighttranster increased Decreased Longueur de si ge X qu reso pene PRN Sens de toumage de aois Pus pus dispositif de r glage iure souple Transfert de poids Accu R duit Rear spring Ressort de arri re Check the adjuster length using the 7 scale on the special wrench included Sgen 1l2lslals 6 7 in the owners tool kit as shown Make sure that the rim of the control Preload So Hard Tod body is within the range of he Contr ler la longueur du dispositif do Position du lelslalslelz r glage l aide de l chelle figurant dispositi de r glage sur la cl sp ciale fournie dans la trousse de r p
25. O R S will operate and the engine should run between 2 800 and 3 000 r min A WARNING If the engine does not run between 2 800 and 3 000 r min stop the engine by turning the main switch to the OFF position and consult a Yamaha dealer 6 5 818 096 ESU00091 Brake 1 Brake lever Test the brake at a low speed when starting out to make sure that it is working properly If the brake does not provide proper braking performance inspect the brake for wear or brake fluid leakage See pages 8 18 8 19 for more details A WARNING e A soft spongy feeling in the brake lever indicates a failure in the brake system e Do not operate the snowmobile if you find any problems in the brake system You could lose braking ability which could lead to an accident Ask a Yamaha dealer to inspect and repair the brake system Make sure that the brake lever end does not project out over the handlebar end This is to prevent brake lever damage when the snowmobile is placed on its side 2 Brake fluid Check the brake fluid level See page 8 19 Add fluid if necessary Lower level Specified brake fluid DOT 4 6 6 805 098 805 129 ESU00093 Brake fluid leakage Apply the brake for a few minutes Check to see if any brake fluid leaks out from the brake hose joints or the master cylinder A WARNING If brake fluid leakage is found ask a Yamaha dealer for immediate repairs Brake flu
26. RTMENT P O Box 6555 Cypress California 90630 1 8 When contacting Yamaha Motor Corpora tion U S A be sure to include the model serial number names dates and receipts CHANGE OF ADDRESS The federal government requires each manufacturer of a motor vehicle to maintain a complete up to date list of all first purchasers against the possibility of a safety related defect and recall This list is compiled from the purchase registrations sent to Yamaha Motor Corporation U S A by the selling dealer at the time of your purchase If you should move after you have purchased your new snowmobile please advise us of your new address by sending a postcard listing your snowmobile model name engine serial number dealer number or dealers name as it is shown on your warranty registration identification your name and new mailing address Mail to YAMAHA MOTOR CORPORATION U S A WARRANTY DEPARTMENT P O Box 6555 Cypress California 90630 This will ensure that Yamaha Motor Corporation U S A has an up to date registration record in accordance with federal law ESU04280 YAMAHA EXTENDED SERVICE Y E S Keep your Yamaha protected even after your warranty expires with genuine Yamaha Extended Service Y E S e YES is designed and administered by Yamaha Motor Corporation to provide maxi mum owner satisfaction You get uninter rupted factory backed coverage for extra peace of mind e Y E S is flexible You choose the pl
27. SOUPLE du guidon peut causer des BLESSURES GRAVES voire MORTELLES S agripper la poign e seulement lors de la travers e lat rale de pentes pour garder l quilibre lorsque l on d place son poids du c t amont A Garder une main sur le guidon Eviter toute acc l ration ou freinage brusques La travers e de pentes dont la raideur requiert l utilisation de la poign e est r serv e aux pilotes exp riment s 77761 00 RS90M CAUTION ATTENTION 8ED E0 This snowmobile is originally equipped with a 51mm 2 0in high profile pattern track for deep snow riding conditions Operation on light snowfall ice hard packed de la glace de la neige tass e de la salet etc snow dirt etc will result in rapid wear or damage to track and slide runners Cette motoneige est quip e d une chenille relief de 51 mm 2 0 po pour la neige profonde La conduite sur de la neige peu profonde provoquera une usure rapide ou l endommagement de la chenille et des patins 8ED 2191H EO RS90M RSG90 WARNING AVERTISSEMENT NO PASSENGERS OR CARGO ON THIS TRACK COVER It was not designed to carry weight It could bend or break under load Anything placed here could block the view of the brake tail light which could cause an accident AUCUN PASSAGER OU MARCHANDISE SUR LE PROTECTEUR DE CHENILLE Ce protecteur n a pas t con u pour supporter un po
28. V to FWD while the snowmobile is moving Otherwise the drive system could be damaged NOTE The reverse buzzer beeps while the shift lever is in reverse 2 Release the parking brake by moving the parking brake lever to the right 3 Press the throttle lever slowly to move the snowmo bile 4 Turn the handlebar in the desired direction 5 Squeeze the brake lever to stop the snowmobile 6 Apply the parking brake by moving the parking brake lever to the left ESU00136 Stopping the engine Turn the main switch to the OFF position to stop the engine OFF A WARNING e Push down the engine stop switch to stop the engine in an emergency e Make sure that the key is removed from the main switch whenever the operator leaves the snow mobile to prevent accidental starting ESU00367 Transporting When transporting your snowmobile on a trailer or in a truck observe the following recommendations to help protect it from damage e Make sure that the fuel level in the fuel tank is lower 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 cylinders 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 Whe
29. YAMAHA stowvogse OWNER S MANUAL RSIONL RS90RL RS90NRL RSIOML RS90GTL RSG90L LIT 12628 02 50 8GG 28199 11 WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm YAMAHA LIT CALIF 65 01 ESU00286 MACHINE IDENTIFICATION Identification number records A FRAME NUMBER B ENGINE NUMBER PRIMARY ID Ooo C KEY NUMBER Oooo 0 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 The frame number is the seventeen digit number stamped on the frame of the snowmobile See fig A The engine number is stamped in the location as shown See fig B Key number See fig C Also record and keep the ID numbers in a separate place in case the snowmobile is stolen ESU00011 INTRODUCTION Congratulations on your purchase of a Yamaha snowmo bile This model is the result of Yamaha s 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
30. a descent Excessive braking will cause the drive track to lock causing a loss of control Traversing a slope oN a 4 v A WARNING Traversing slopes is not recommended for a novice snowmobiler Traversing a slope requires you to properly position your weight to maintain proper bal ance As you travel across the slope lean your body to position your weight towards the uphill side A recommended riding position is to kneel with the knee of your 7 5 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 A WARNING If you are unable to maintain correct balance and your snowmobile is going to tip over dismount your snowmobile immediately on the uphill side Ice or icy surface Operating on ice or icy surfaces can be very dangerous Traction for turning stop ping and starting is much less than that on snow A WARNING When you have to operate on ice or icy surfaces drive slowly and cautiously Avoid accelerating turning and
31. amples of abnormal strain ne glect or abuse 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 May perform any or all of the recommended main tenance shown in the Owners Manual instead of having the dealer do them Yes if you are a qualified snowmobile mechanic and follow the procedures specified in the Owner s and Service Manual We do recommend however that items requiring special tools or equipment be done by a Yamaha snowmobile dealer Under what conditions is the clutch not covered by warranty Clutches as well as clutch components wear with use Normal wear is not covered under warranty such Service is the customer s responsibility Abnormal wear is however covered for one 1 year from the date of purchase Your Yamaha snowmobile dealer possesses criteria as to what constitutes abnormal wear Will the warranty be void or canceled if do not operate or maintain my new Yamaha exactly as specified in the Owner s Manual No The warranty on a new Yamaha cannot be voided or canceled However if a particular failure is caused by operation or maintenance
32. an that s right for you 12 months 24 months 36 months or every 48 months on selected models beyond your warranty period e YES is designed and administered by the same Yamaha people who handle your war ranty and it shows in the comprehensive coverage benefits There are no mileage limi tations and Y E S covers manufacturing defects just like the warranty See the sample contract at your Yamaha dealer to see how comforting uninterrupted factory backed pro tection can be e You don t have to pay anything for covered repairs There s no deductible to pay and repairs aren t pro rated You don t have any out of pocket expenses for covered repairs e In addition Travel and Recreation Interruption Protection TRIP is included at no extra cost TRIP gives you up to 150 reimbursement per occurrence for any reasonable expenses you incur because your Yamaha needs cov ered service replacement vehicle rental emergency towing phone calls even food and lodging when you are away from home This superb coverage goes into effect when you purchase Y E S so it applies to any war ranty repairs as well as covered repairs dur ing your entire Y E S plan period e Y E S coverage is honored at any authorized Yamaha dealer nationwide e Y E S coverage is transferable to a new owner if you sell or trade in That can make your Yamaha much more valuable This excellent Y E S plan coverage is only avail able to Yamaha ow
33. and charge it as necessary A WARNING e Never smoke around the battery while it is being charged Sparks may ignite the hydrogen gas created by the battery Never connect the battery to or dis connect it from the snowmobile while it is being charged Sparks may ignite the hydrogen gas created by the battery Make sure that the battery terminals are tight e Always keep the battery charged Storing a discharged battery can cause permanent battery damage To charge a sealed type MF battery a special constant voltage battery charger is required Using a conven tional battery charger will damage the battery If you do not have access to a sealed type MF battery charger have a Yamaha dealer charge your battery Do not charge the battery quickly Charge the battery for 10 hours at 1 8 amperes 7 Drive track Loosen the drive track and block up the chassis so that the track is suspended above the ground 8 V belt Remove the V belt and store separately 9 Storage Store the snowmobile in a dry well venti lated place out of direct sunlight Put a fab ric cover over the snowmobile preferably one that is designed for it Do not use a plastic or vinyl cover condensation could be trapped underneath which could increase the chances of rusting 10 2 Returning to service after storage When returning your snowmobile to ser vice install the V belt and battery and adjust the drive track Remove the spark
34. ant reservoir when the engine is cold If the coolant level is below the COLD LEVEL mark add soft water until it reaches the COLD LEVEL mark See pages 8 12 8 13 for more details COLD LEVEL mark A WARNING Do not remove the coolant reservoir cap when the engine is hot e Hard water or salt water is harmful to the engine parts You may use boiled or distilled water if soft water is not available e Tap water can be used temporarily in an emer gency 6 4 816 052 ESU00087 Throttle lever Check the throttle lever operation before starting the engine The throttle lever must open smoothly and spring back to its home position when released ESU00090 Throttle override system T O R S Check the T O R S for proper operation A WARNING When checking T O R S e Make sure that the parking brake is applied e Make sure that the throttle lever moves smoothly e Do not run the engine up to clutch engagement r min Otherwise the snowmobile could start moving forward unexpectedly which could cause an accident 1 Start the engine NOTE Refer to the Starting the engine section 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 While holding the pivot point as described above press the throttle lever 3 gradually The T
35. ant temperature warning indicator Fuel level warning indicator Oil level warning indicator 69 Speedometer 69 Grip warmer indicator G Select reset button G Thumb warmer indicator Fuel meter and grip thumb warmer level indicator Odometer tripmeter 831 004 ESU00013 CONTROL FUNCTIONS ESU00362 Main switch The main switch controls the following items OFF The ignition circuit is switched off The key can be removed only in this position ON The ignition circuit is switched on 3 START The starting circuit is switched on The starter motor starts Release the switch immediately after the engine starts NOTE 222222222 0 The headlights meter lights and taillights come on after the engine starts 5 1 ESU00201 Starter lever choke Use the starter lever choke when starting and warming up a cold engine D Starter lever choke When starting a cold engine Warming up When the engine is warm NOTE SSS Refer the Starting the engine section for proper opera tion ESU00022 Throttle lever Once the engine is running cleanly squeezing 3 the throt tle 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
36. aration Bien veiller ce que le bord de la Fr contiakite Souple Die ge lige de r glage soit dans la plage de l chelle 8FU 28188 00 8FU 2818B 00 2 4 851 006 ESU00008 SAFETY INFORMATION When you ride your snowmobile you must know and use the following for your safety Severe injury or death may result if you ignore any of the following Before operating 1 Read the Owner s Manual and all labels before oper ating this snowmobile Become familiar with all of the operating controls and their function Consult a Yamaha dealer about any control or function you do not understand This snowmobile was not manufactured for use on public streets roads or highways Such use is pro hibited by law and you could collide with another vehicle This snowmobile is designed to carry the OPERA TOR ONLY Passengers are prohibited Carrying a passenger can cause loss of control Do not operate the snowmobile after drinking alcohol or taking drugs Your ability to operate the snowmo bile is reduced by the influence of alcohol or drugs For safety and proper care of the snowmobile always perform the pre operation checks on pages 6 1 6 11 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
37. arbon or wipe the spark plugs dry replace if necessary Faulty ignition system Ask a Yamaha dealer to inspect T O R S system malfunction Discon nect the throttle switch connectors and connect the wire harness connectors together to bypass the T O R S RS90N RS90NR RS90M RS90R RS90GT RSG90 9 1 A WARNING Before bypassing the T O R S make sure that the throttle returns prop erly to the fully closed position The T O R S is an important safety device in the case of a malfunction take the snowmobile to a Yamaha dealer immediately for repair Compression Insufficient Loose cylinder head nuts nuts properly Worn or damaged gasket Replace gasket Worn or damaged piston and cylinder Ask a Yamaha dealer to inspect Tighten B Starting the engine with a dis charged battery If the snowmobile battery is discharged the engine can be started using a 12 volt battery and jumper cables Two connecting leads have been provided for jump starting the snowmobile Due to the rubber engine mounting the snowmobile frame is not a suitable grounding point for jump starting the engine 4 WARNING Connect the jumper cables only to the connecting lead terminals Do not connect them to the frame or any wire or other lead When connecting the jumper cables do not contact the jumper cables or connecting lead terminals to each other or to the frame or any metal part of the snowmobile This can
38. at time for inspection and repairs at such dealers place of business You may locate your nearest authorized Yamaha dealer through your local telephone directory WARRANTY TRANSFER To transfer any remain ing warranty from the original purchaser to any subse quent purchaser it is imperative that the machine be inspected and registered for warranty by an authorized Yamaha snowmobile dealer In order for this warranty to remain in effect this inspection and registration must take place within ten 10 days after ownership transfer An inspection and registration fee will be charged for this service 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 All Models Thirty 30 months from the original purchase date YAMAHA MOTOR CORPORATION U S A MAKES NO OTHER WARRANTY OF ANY KIND EXPRESS
39. ating 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 The dealer can tell you if there are any changes necessary for the altitude where you plan to ride The drive chain gears and V belt clutch should be adjusted when operating above a high altitude of 900 m 3 000 ft Consult a Yamaha dealer ESU00348 Adjusting the valve clearance The valve clearance changes with use resulting in improper air fuel mixture and or engine noise To prevent this from occurring the valve clearance must be adjusted by a Yamaha dealer at the intervals specified in the peri odic maintenance chart 8 8 800 053 ESUO4201 Changing the engine oil It is recommended to have a Yamaha dealer change the engine oil A WARNING Engine oil is extremely hot immediately after the engine is turned off Coming into contact with or get ting any engine oil on your clothes could result in burns enough oil in the oil tank Oil could spray out or the engine could be damaged e Be sure to change the engine oil after the first 800 km 500 mi of operation and every 4 000 km 2 500 mi thereafter or at the start of a new sea son otherwise the engine will wear quickly e
40. battery service or sont install s correctement air box removal Consultez le manuel See Service Manual d entretien 8ES 14427 00 8ES 14488 00 RS90GT This unit contains high pressure nitrogen gas Mishandling can cause explosion e Read owner s manual for instructions Do not incinerate puncture or open AVERTISSEMENT Cette unit contient de l azote haute pression Une mauvaise manipulation peut entrainer d explosion Voir le manuel d utilisateur pour les instructions e Ne pas br ler ni perforer ni ouvrir WARNING This unit contains high pressure nitrogen gas Mishandling can cause explosion Read owner s manual for instructions Do not incinerate puncture or open AVERTISSEMENT Cette unit contient de l azote haute pression Une mauvaise manipulation peut entrainer d explosion Voir le manuel d utilisateur pour les instructions Ne pas br ler ni perforer ni ouvrir 4AA 22259 70 4AA 22259 60 RS90M WARNING Improper use of STRAP on the handlebar can result in AVERTISSEMENT A SEVERE INJURY or DEATH Use strap only as an operator grip point to shift weight uphill to maintain balance during traverse sidehill riding Keep one hand on handlebar Do not change speed or direction abruptly Only experienced operators should traverse slopes steep enough to require strap use L utilisation incorrecte de la POIGN E
41. bile not approved by Yamaha or the removal of original equipment may render your snowmobile unsafe for use that may cause severe personal injury Modifications may also make the snowmobile illegal to use 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 Always refer to the STORAGE section if the snow mobile is to be stored for an extended period Maintain or replace safety and instruction labels as necessary 3 3 ESUO0012 DESCRIPTION RS90N RS90NR Windshield Steering handlebar Seat Frame Storage compartment Slide rail suspension Rear suspension damping force remote adjustment dial RS90R RS90GT RSG90 Drive track 9 Skis Headlights Shroud Strap RS90M Tail brake lights Snow flap 5 Brake lever Parking brake lever Grip warmer adjustment switch Headlight beam switch Engine stop switch Thumb warmer adjustment switch Throttle lever Shift lever RS90R RS90NR RS90GT RSG90 Shroud latch Main switch Auxiliary DC jack RS90GT Starter lever Tachometer Low coolant temperature indicator light High beam indicator light Warning light Self diagnosis warning indicator G2 Cool
42. braking rapidly Steering is minimal and uncon trolled spins are an ever present dan ger Hard packed snow It can be more difficult to negotiate on hard packed snow as both the skis and drive track do not have as much traction as when the snowmobile is operated on fresh snow Avoid rapid acceleration turning and braking Operation on surfaces other than snow or ice Operation of your snowmobile on surfaces other than snow or ice should be avoided Operation under such conditions will dam age or result in rapid wear of the ski run ners drive track slide runners and drive sprockets Operation of the snowmobile on the following surfaces should be avoided at all times 1 Dirt 2 Sand 3 Rocks 4 Grass 5 Bare pavement Other surfaces that should be avoided for the sake of drive track and slide runner life are 1 Glare ice surfaces 2 Snow mixed with a lot of dirt and sand 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 7 6 A WARNING Drive track damage or fa
43. c parts Never spill any fluid If any is spilled clean it up immediately ESU01811 Changing the brake fluid Brake fluid replacement is necessary when the following components are replaced during the periodic mainte nance or if they are damaged or leaking a All oil seals of the master cylinder and caliper cylinder b The brake hose A WARNING Make sure that the brake fluid and the above parts are replaced by a Yamaha dealer ESU00183 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 A WARNING Be sure to have a Yamaha dealer make this adjust ment ESU04821 Adjusting the ski spring preload The spring preload can be adjusted by turning the spring preload adjuster For RS90R RSG90 Standard Increased Decreased Spring seat length Preload Harder lt E Softer Maximum Minimum 8 Length 172 0 mm 162 0 155 5 mm 6 77in 6 38in 6 12 in The spring seat length changes approximately 1 5 mm 0 06 in with each full turn of the adjuster For RS90M Standard Spring seat length Increased lt Decreased Preload Harder lt gt Softer Maximum Minimum Length 162 0mm 152 0mm 152 0 mm 6 38 5 98 5 98 in The spring seat length chan
44. cause electrical system damage or A FIRE HAZARD Use the connecting leads to jump start the snowmobile only Do not use the connecting leads for any other purpose 1 Apply the parking brake and turn the main switch to OFF 2 Open the shroud 5 Connect the other end of the red 3 Remove the red 4 lead from the lead jumper cable to the positive terminal holder and move it away from the black of the booster battery lead 6 Connect the black jumper cable to the negative terminal of the booster battery 7 Pull the black lead cover to expose the terminal through the slit in the cover and then connect the black jumper cable to the black terminal of the discharged battery Be sure to connect the red jumper cable to the red lead and the black jumper cable to the black lead Do not reverse the connections 4 Pull the red lead cover to expose the terminal through the slit in the cover and then connect the red jumper cable to the red terminal of the discharged battery 9 2 8 Start the engine 9 Disconnect the black jumper cable from the black connecting lead and then pull the cover completely over the lead terminal 10 Disconnect the black jumper cable from the negative terminal of the booster battery 11 Disconnect the red jumper cable from the positive terminal of the booster battery
45. ch to stop the engine To start the engine pull 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 ESU02410 Brake lever The snowmobile is stopped by braking the entire drive system Squeeze the brake lever towards the handlebar grip to stop the snowmobile Brake lever Brake lever end Handlebar end NOTE When the brake lever is operated the brake light will illu minate Make sure that the brake lever end does not project out over the handlebar end This will help prevent brake lever damage when the snowmobile is placed on its side for service For RS90N RS90NR RS90GT The brake lever is equipped with a position adjuster To adjust the brake lever position 1 Loosen the locknut 2 While lightly pushing the brake lever in direction finger tighten the adjusting bolt 2 to set the brake lever to the desired position 3 Tighten the locknut securely after adjusting the brake lever 5 8 ESU00035 Parking brake lever When parking the snowmobile or starting the engine apply the parking brake by moving the brake lever to the left To release the parking brake move the parking brake lever to the right A To apply the parking brake To release the parking brake A WARNING e Always set the parking brake before at
46. dealer to replace them Brake pad wear indicator Wear limit 1 5 mm 0 06 in ESU00352 Checking the parking brake pads Check the parking brake pads for wear by measuring the thickness of the pads If the parking brake pads reach the wear limit ask a Yamaha dealer to replace them Wear limit 1 2 mm 0 05 in Adjustment As the parking brake pads wear adjustment may be nec essary to ensure proper brake performance A WARNING Be sure to have a Yamaha dealer make this adjust ment 1 Loosen the locknut and the adjusting bolt 2 Loosen the cable locknut 3 Turn the cable adjuster in or out to adjust the cable length Cable length 8 43 5 46 5 mm 1 713 1 831 in 4 Tighten the cable locknut 5 Turn the adjusting bolt in or out to adjust the clear ance between the parking brake pads and the brake disc Clearance 1 5 2 0 mm 0 059 0 079 6 Tighten the locknut ESU00180 Checking the brake fluid level Place the snowmobile on a level surface Check that the brake fluid is above the lower level and replenish when necessary D Lower level WARNING Be careful that water does not enter the master cylin der when refilling Water will significantly lower the boiling point of the fluid and may result in vapor lock If the brake fluid level goes down consult a Yamaha dealer Brake fluid may deteriorate painted surfaces or plas ti
47. direction to decrease weight transfer Adjuster turning direction m Si Weight transfer Increased lt Decreased 3 Check the adjuster length using the scale on the special wrench 3 included in the owner s tool kit as shown Make sure that the rim d of the control rod body is within the range of the scale 4 Tighten the locknut while holding the adjuster in place Locknut tightening torque 35 Nm 3 5 m kgf 25 ft lb When using the special wrench make sure that it is situated at a right angle to the control rod and that it is tightly fitted to the locknut or the control rod adjuster A WARNING Never adjust the control rod beyond the range of the scale on the special wrench 8 27 For RS90N RS90NR RS90M 1 Loosen the locknut 2 Turn the control rod adjusting nut 2 in direction 8 to increase weight transfer or direction to decrease weight transfer 3 Tighten the locknut while holding the adjusting nut in place Locknut tightening torque 25 Nm 2 5 m kgf 18 ft lb e When using the two wrenches included in the owner s tool kit make sure that they are situated at a right angle to the control rod as shown and that they are tightly fitted to the locknut and the control rod adjusting nut e The left and right adjusting nuts must be set to the same position Uneven settings can cause poor handling and loss of stability A WARNING Never adjust the control rods b
48. e circuit and cause the fuse to blow See pages 8 35 8 37 for the specified amperage e Do not use an automotive cigarette lighter or other accessory with a plug that gets hot because the jack can be damaged Maximum rated capacity DC 12 V 2 5 A 30 W ESU00481 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 Shroud latch Shroud Make sure that all cables and wires are in place when closing the shroud A WARNING e Do not drive the snowmobile with the shroud open unlatched or removed e Keep your body and clothing away from rotating parts when servicing with the shroud open e Do not touch the hot muffler and engine during or immediately after operation ESU00521 Drive guard The drive guard is designed to cover the V belt clutch and V belt in case parts break or come loose A WARNING e Make sure that the drive guard is tightened securely before operating the snowmobile e Never run the engine with the V belt or drive guard removed ESU00053 V belt holders Keep a spare V belt for emergency use by placing it into 2 v Make sure that the V belt is installed securely in the holders ESU04080 Carburetor coolant shut off lever For RS90M The carburetor coolant shut off lever controls the flow of coo
49. e engine idle speed first 1 Loosen the locknut 2 Turn the adjuster in or out until the proper throttle lever free play is achieved Throttle lever free play 3 2 0 3 0 mm 0 08 0 12 in D Locknut Adjuster 3 Tighten the locknut ESU04870 Adjusting the carburetors The carburetors are an important part of the engine and its emission control system which require very sophisti cated adjustment Therefore carburetor adjustments should be left to a Yamaha dealer who has the neces sary professional knowledge and experience 8 7 ESU04860 Adjusting the high altitude settings Operating at high altitude reduces the performance of a gasoline engine 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 Proper carburetion adjust ments will correct the air fuel ratio Be sure to have a Yamaha dealer make these adjustments Remember Less air at higher altitude means there is less horsepower available even with proper carburetion Expect acceleration and top speed to be reduced at higher altitudes To overcome oper
50. e le manuel du propri taire et toutes les tiquettes This vehicle is a high performance machine Ce v hicule est une machine haute performance It should be operated by an experienced operator Elle doit tre conduite par un conducteur exp riment Check throttle brake and steering for proper operation before starting engine Avant de d marrer le moteur v rifier l op ration du frein de l acc l rateur Set parking brake before attempting to start engine et de la direction Never run this vehicle with the parking brake applied Le frein de s curit doit tre appliqu lors du d marrage stop engine in an emergency push the engine stop switch down pas rouler avec le frein de s curit actionn Do not operate engine without drive belt or drive guard En cas d urgence utiliser l interrupteur d arr t du moteur Make sure the fuel tank cap is closed securely after refueling Ne pas laisser tourner le moteur sans la courroie ou sans son garde Do not operate this vehicle on public roads S assurer que le bouchon du r servoir soit bien referm apr s le remplissage You could collide with another vehicle Afin d viter tout risque de collision ne pas rouler sur un chemin public This vehicle is designed for operator only no passengers Ce v hicule est concu pour un conducteur seul aucun passager Wear an approved helmet eye protection and adequate clothing for Toujours porter un casque a
51. ed sheave 805 135 3 Pull 3 the V belt up over the secondary fixed sheave 4 Remove the V belt from the secondary sheave assembly and primary sheave assembly 5 Put the new V belt back on the secondary sheave assembly only Do not force the V belt between the sheaves the secondary sliding and fixed sheaves must touch each other Measure the V belt position Standard V belt position 3 From 1 5 mm 0 06 in above the edge of the second ary sheave to 0 5 mm 0 02 in below the edge 6 If the position is incorrect adjust the V belt position by removing or adding a spacer on each adjusting bolt V belt position Adjustment More than 1 5 mm 0 06 in above the edge Remove spacer From 1 5 mm 0 06 in Not necessary above the edge to 0 5 mm Itis correct 0 02 in below the edge More than 0 5 mm 0 02 in below the edge Add spacer 7 Tighten each adjusting bolt Adjusting bolt tightening torque 10 Nm 1 0 m kgf 7 2 ft lb 8 Install the V belt over the primary sheave assembly 9 Rotate the secondary sliding sheave clockwise and push it so that it separates from the secondary fixed sheave 10 Install the V belt between the secondary sliding and secondary fixed sheaves 11 Install the drive guard A WARNING Never run the engine with the V belt or drive guard removed ESU03513 Checking the drive chain housing oi
52. enly A WARNING e Many surfaces such as ice and hard packed snow require much longer stopping distances Be alert plan ahead and begin decelerating early Improper use of the brake can cause the drive track to lose traction reduce control and increase the possibility of an accident Turning Riding uphill 852 001 For most snow surfaces body English is the key to turning As you approach a curve slow down and begin to turn the handlebar in the desired direction As you do so put your weight on the running board to the inside of the turn and lean your upper body into the turn This procedure should be practiced at low speeds many times in a large flat area with no obstacles Once you have learned this technique you should be able to per form it at higher speeds or in tighter curves Lean more as the turn gets sharper or is made at higher speeds Improper riding techniques such as abrupt throttle changes excessive braking incor rect body movements or too much speed for the sharpness of the turn may cause the snowmobile to tip If your snowmobile begins to tip while turn ing lean more into the turn to regain bal ance If necessary gradually let off on the throttle or steer to the outside of the turn Remember Avoid higher speeds until you are thor oughly familiar with the operation of your snowmobile 7 4 You should practice first on gentle slopes Try more difficult climbs only after you ha
53. eriod prolonged full throttle operation or any condition that might result in engine overheating must be avoided Operating your snowmobile for the first time Start the engine and let it idle for 15 minutes 0 160 km 0 100 mi Avoid prolonged operation above 6 000 r min 160 500 km 100 300 mi Avoid prolonged operation above 8 000 r min 500 km 300 mi and beyond e After 800 km 500 mi of operation the engine oil must be changed and the oil filter cartridge replaced e If any engine trouble should occur during the engine break in period immediately have a Yamaha dealer check the snowmobile 7 2 ESU01272 Riding your snowmobile 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 Owner s Manual completely and understand the operation of the controls Pay particular attention to the safety infor mation on pages 3 1 3 3
54. events the engine speed from rising 5 6 ESU04180 Coolant temperature warning indicator If the engine overheats the coolant temperature warning indicator 1 and the warning light come on When this occurs stop the engine immediately and allow the engine to cool down and then check the coolant level in the coolant reservoir See page 6 4 Do not operate the engine if it overheats ESU04254 Self diagnostic system This model is equipped with a self diagnostic system for various electrical circuits If any of those circuits are defective the warning light and the self diagnosis warning indicator 2 will flash and then an error code e g 16 and 81 will flash slowly in the tripmeter odometer display A WARNING e lf the self diagnosis warning indicator and warn ing light flash continuously and an error code is displayed during operation there may be some problem with the electrical circuit lead couplers etc e Stop the engine and allow it to cool off Then check that the wire harness couplers in the engine compartment are connected properly e If the self diagnosis warning indicator warning light and an error code flash after the engine has been restarted note the error code and then have a Yamaha dealer inspect the snowmobile as soon as possible 5 7 ESU00031 Engine stop switch The engine stop switch is used to stop the engine in an emergency Simply push the stop swit
55. eyond the maximum range indicated on the rods with red paint Adjustable range Standard position 8 28 ESU03532 Adjusting the drive track A WARNING A broken track track fittings or debris thrown by the drive track could be dangerous to an operator or bystanders Observe the following precautions e Do not allow anyone to stand behind the snow mobile when the engine is running e When the rear of the snowmobile is raised to allow the drive track to spin a suitable stand must be used to support the rear of the snowmo bile Never allow anyone to hold the rear of the snowmobile off the ground to allow the drive track to spin Never allow anyone near a rotating drive track e 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 Measuring the drive track deflection 1 Lay the snowmobile on its side 2 Measure the drive track deflection with a spring scale Pull at the center of the drive track with a force of 100 N 10 kg 22 Ib NOTE Measure the gap between the slide runner and the edge of the track window Measure both sides Deflection 100 N 10 kg 22 Ib Standard drive track deflection For RS90N RS90R RS90NR
56. ges approximately 1 5 0 06 in with each full turn of the adjuster For RS90GT Standard Spring seat length Increased Decreased Preload Harder lt gt Softer Maximum Minimum amp Length 129 6 mm 123 0mm 119 6 mm 5 10in 4 84in 4 71 The spring seat length changes approximately 1 5 mm 0 06 in with each full turn of the adjuster NOTE For RS90N RS90NR To adjust the shock absorbers refer to the separate shock absorber owner s manual 8 20 The left and right ski spring preload must be set to the same setting Uneven settings can cause poor handling and loss of stability A WARNING This shock absorber contains highly pressurized nitrogen gas It could explode by improper handling causing injury or property damage e Do not tamper with or attempt to open the shock absorber e Do not subject the shock absorber to an open flame or other high heat source which could cause it to explode e Do not deform or damage the shock absorber in any way e Do not dispose of a worn or damaged shock absorber by yourself Take the unit to a Yamaha dealer ESU04750 Adjusting the ski damping forces For RS90GT Compression damping force The compression damping force of each ski shock absorber can be adjusted by turning the compression damping force adjusting knob 14 clicks 8 clicks 2 clicks out out out Adjusting knob position Minimum Standard Maximu
57. he date of purchase plus a special early season extension if applicable DURING THE PERIOD OF WARRANTY any au thorized Yamaha snowmobile dealer will free of charge repair or replace at Yamaha s option any part adjudged defective by Yamaha due to faulty workmanship or material from the factory Parts used in warranty repairs will be warranted for the balance of the snowmobile s warranty period All parts replaced under warranty be come the property of Yamaha Motor Corporation U S A GENERAL EXCLUSIONS from this warranty shall include any failures to the machine caused by 1 Competition racing or non Yamaha authorized rental use 2 Operation on surfaces other than snow or ice 3 Installation of parts or accessories that are not qual itatively equivalent to genuine Yamaha parts Abnormal strain neglect or abuse Lack of proper maintenance Accident or collision damage Modification to original parts oos SPECIFIC EXCLUSIONS from this warranty shall include parts replaced due to normal wear or routine maintenance including oil spark plugs clutch drive belts slide runners and track THE CUSTOMER S RESPONSIBILITY under this warranty shall be to 1 Operate and maintain the snowmobile as specified in the appropriate Owner s Manual 1 1 2 Give notice to an authorized Yamaha snowmobile dealer of any and all apparent defects within ten 10 days after discovery and make the machine avail able at th
58. he tool kit is properly seated in its holder and is securely fastened NOTE gt c If you do not have a torque wrench available during a service operation requiring one take your snowmobile to a Yamaha dealer to check the torque settings and adjust them if necessary ESU03681 Checking the spark plugs 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 8 5 Specified spark plug R CR8E NGK or CR8E NGK Spark plugs are produced in several different thread lengths The thread length or reach is the distance from the spark plug ga
59. hes bushings for wear for primary e Inspect ramp shoes bushings for wear for secondary Replace if necessary Lubricate with specified e grease Steering column Lubricate with specified e bearing grease Ski and front Lubricate with specified e 8 33 suspension grease Suspension Lubricate with specified e 8 33 component grease Lubricate with specified Parking brake cable rats c RU e 8 33 end and lever end throttle cable end Check cable damage e Replace if necessary Shroud latches Make sure that the shroud e 5 11 latches are hooked Fittings and fasteners hec tightness e 6 11 Repair if necessary Tool kit and recom Check for proper placement e 6 11 mended equipment tis recommended that these items be serviced by a Yamaha dealer NOTE Brake system e fluid Regularly check the brake fluid level and add fluid if necessary After disassembling the master cylinder or caliper cylinder always change the brake Replace the oil seals of the master cylinder and caliper cylinder every two years Replace the brake hose every four years or if cracked or damaged ESU03761 Tool kit The owner s tool kit has the tools which are sufficient for most periodic maintenance and minor repairs A torque wrench is also necessary to properly tighten nuts and bolts QD Tool kit gt RS90N RS90NR RS90M RS90R RS90GT RSG90 e Before starting the engine make sure that t
60. hrottle position sensor throttle valve position Throttle switch 3 Throttle cable On Off Open Closed NOTE SSS When the T O R S is activated the warning light and self diagnosis warning indicator 5 will flash and the two digit code 84 will flash in the tripmeter odometer dis play 5 3 ESU04160 Speedometer unit The speedometer unit is equipped with the following a digital speedometer which shows riding speed e an odometer which shows the total distance trav eled e atripmeter which shows the distance traveled since it was last set to zero e warning indicators which show self diagnosis cool ant temperature fuel level and oil level warnings e a fuel meter which shows the fuel remaining in the fuel tank e agrip thumb warmer level indicator which shows the grip warmer level or the thumb warmer level After the engine is started the tachometer 1 makes one sweep and the low coolant temperature indicator light the warning light 3 and all segments of the meter turn on and off once The grip warmer level is initially displayed for 5 seconds then switches to the fuel meter display Odometer and tripmeter modes Pushing the select reset button switches the display between the odometer mode ODO and the tripmeter mode TRIP To reset the tripmeter push the select reset button for at least one second while the tripmeter is di
61. ickly if the snowmobile is equipped with electrical accessories A WARNING Battery electrolyte is poisonous and dangerous It contains sulfuric acid and can cause severe burns Avoid contact with skin eyes or clothing ANTIDOTE e EXTERNAL Flush with water e INTERNAL Drink large quantities of water or milk Follow with milk of magnesia beaten egg or vegetable oil Call physician immediately e EYES Flush with water for 15 minutes and get prompt medical attention Batteries produce explosive gases Keep sparks flame cigarettes etc away Ventilate when charging or using in an enclosed space Always shield your eyes when working near batteries KEEP OUT OF THE REACH OF CHILDREN ESU04232 Replacing a fuse A WARNING Be sure to use the specified fuse A wrong fuse could cause electrical system damage or A FIRE HAZARD Be sure to turn the main switch off and disconnect the negative battery lead to prevent accidental short circuiting 8 35 ND 10 11 Lift up the shroud Remove the right side cover 1 Unhook the latch Loosen the clamp screws Slide the oil tank breather hose clamp away from the air filter case and then disconnect the oil tank breather hose Slide the crankcase breather hose clamp up and then disconnect the crankcase breather hose 7 from the engine Lift up the air filter case slide the crankcase breather hose clamp dow
62. id may deteriorate painted surfaces or plas tic parts Never spill any brake fluid If any is spilled clean it up immediately ESU00941 V belt Open the shroud and remove the drive guard Check the V belt for wear and damage Replace if neces sary A WARNING e Make sure that the drive guard is tightened securely before operating the snowmobile e Never run the engine without the V belt or with the drive guard removed ESU00096 Drive guard Check the drive guard mounts for damage Make sure that the drive guard is firmly in place 6 7 ESU00097 Drive track Check the drive track for deflection wear or damage Adjust or replace if necessary See pages 8 29 8 31 for more details A WARNING 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 ESU00243 51 mm 2 0 in high profile pattern drive track For RS90M This snowmobile is originally equipped with a 51 mm 2 0 in high profile pattern drive track specifically for use in deep snow riding conditions Therefore avoid prolonged operation on hard surfaces such as ice hard packed snow dirt etc to extend the life of the track and slide runners e Only use in deep snow riding conditions e Operation on areas with light snowfall ice hard packed snow dirt or grass w
63. ids II pourrait s incurver ou se briser sous la charge Tout objet ou personne plac cet endroit pourrait bloquer la vue des feux d arr t arri re et ainsi causer un accident YAMAHA 88X 77762 10 NOTE The following suspension adjustment charts are included with the Owner s Manual RS90M Control rod adjustment SUSPENSION ADJUSTMENT CHART R glage des tiges de r glage TABLEAU DES REGLAGES DE LA SUSPENSION Maximum adjustment limit mte maximum du r glage Minimum adjustment limit Limite minimum du r glage MS Be sure to have a Yamaha dealer make these adjustments Ces r glages doivent tre effectu s par un concessionnaire Yamaha Decreased Increased sde numade 9 de r gage D Ski spring preload adjustment R glage de la pr contrainte de ressort des skis Tansteridepoids R duit Accru Spring seat Decreased ET ength Fr bai Anti bottoming stopper adjustment Prebad Hardere Soter ae R glage des but es anti talonnement Longueur de installa segou Acme mue LLL Wm Sun ressort prm Fus Spring force Sot medum Hare resa T PS Pr containte Souple Dure Postion sIw n Tension de soupe hionad vue Rear suspension spring preload adjustment R glage de la p
64. ie ou sans son garde Do not operate this vehicle on public roads Sassurer que le bouchon du r servoir soit bien referm apr s le remplissage You could collide with another vehicle Afin d viter tout risque de collision ne pas rouler sur un chemin public This vehicle is designed for operator only no passengers Ce v hicule est concu pour un conducteur seul aucun passager Wear an approved helmet eye protection and adequate clothing for Toujours porter un casque approuv et un habillement de motoneigiste snowmobiling Pr voir une protection pour les yeux Check lever position Forward or Reverse before moving V rifier la position du levier marche avant ou arri re avant d tre en marche 8FB 77761 E0 g WARNING DO NOT OPERATE ENGINE WITHOUT V BELT OR DRIVE GUARD AVERTISSEMENT NE PAS FAIRE FONCTIONNER LE MOTEUR SANS COURROIE EN V OU PROTECTEUR D EMBRAYAGE Ko 38077762057 2 1 CAUTION ATTENTION Severe engine damage can result from oil loss if crankcase breather hoses Des dommages graves risquent de survenir par suite de fuites d huile r sultant d un mauvais branchement des tuyaux de reniflard du carter are not installed correctly Apr s l entretien de la batterie ou apr s la Inspect hoses and clamps d pose de l purateur d air assurez for correct installation vous que les brides et les tuyaux after
65. ill result in rapid wear or damage to the track and slide runners from lack of snow which serves as a lubricant 6 8 ESU00982 Slide runners Check the slide runners for wear and damage If the slide runners reach the wear limit they should be replaced Slide runners Wear limit Wear limit height 10 5 mm 0 41 in Ride on fresh snow frequently Operating on ice or hard packed snow will rapidly wear the slide runners ESU03201 Skis and ski runners Check the skis and ski runners for wear and damage Replace if necessary For RS90N RS90R RS90NR RS90GT RSG90 Ski runner wear limit 3 8 mm 0 31 in Ski wear limit 12 mm 0 47 in For RS90M Ski runner wear limit 8 mm 0 31 in sisi Ski wear limit 24 mm 0 94 in Avoid scratching the skis when loading and unload ing the snowmobile when riding in areas with little or no snow or on sharp edges such as concrete curbs etc This will wear or damage the skis 6 9 819 003 ESU00103 Steering system Check the handlebar for excessive free play 1 Push the handlebar up and down and back and forth 2 Turn the handlebar slightly to the right and left If excessive free play is noticed consult a Yamaha dealer ESU00378 Lights Check the lights Replace any burned out bulbs Avoid using a scraper or hot water for cleaning the plastic lenses ESU03502 Air filter Always check that there is no snow under the air fi
66. ilure could result in loss of braking ability and snowmobile control which could cause an accident Always check the drive track for damage or maladjustment before operating the snowmobile Do not operate the snowmobile if you find damage to the drive track Ride on fresh snow frequently Operat ing on ice or hard packed snow will rap idly wear the slide runners ESU00251 Maximizing drive track life Recommendations 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 29 8 31 for adjustment procedures A loose track can slip ratchet derail or catch on suspension parts caus ing 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 Marginal snow The drive track and the slide runners are lubricated and cooled by snow and water To prevent the drive track and slide runners from overheating avoid sustained high speed usage in areas such as icy trails frozen lakes and rivers that have minimal snow coverage An overheated track will be weakened internally which may cause fail ure or damage Off trail riding Avoid off trail riding until there is sufficient snow cover
67. ish 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 Consult a Yamaha dealer if further information is needed 4 Engine Proper storage of the engine is essential to prevent costly rust and corrosion damage to internal engine components This is more important in areas where oxygenated fuel gasohol is used because the alcohol content in the fuel increases the chance for water to enter the engine Use Yamaha Stor Rite Engine Fogging Oil or an equiva lent fogging oil to protect both the com 10 1 bustion chamber and crankshaft from corrosion An alternate method is to remove the carburetor silencer and squirt oil into the carburetor throats while the engine is running Do not attempt to store the snowmobile by simply starting the engine occasion ally during the storage period This can cause more harm than good Moisture and acids form during combustion which can actually increase the chance for corrosion damage during the stor age period 5 Surface protection Apply a coat of wax to painted surfaces Apply suitable protectants to the exterior of the engine drive track and to other metal plastic and rubber parts 6 Battery Remove the battery from the snowmobile Store it in a cool dry place that is above 0 C 32 F but less than 30 C 90 F Check the condition of the battery once a month
68. l level and the drive chain tension Checking the oil level A WARNING The engine oil tank brake disc and coolant hoses will be very hot after the engine has been run Avoid contact while they are still hot with any part of your body or clothing during inspection or repair 1 Place the snowmobile on a level surface 2 Remove the dipstick D wipe it off with a clean rag and then insert it back into the filler hole 807 055 807 056 3 Remove the dipstick and check that the oil is between the maximum and minimum level marks If the oil is below the minimum level mark add sufficient oil to raise it to the maximum level mark Maximum level mark 3 Minimum level mark Drive chain oil GL 3 75W or 80W A For models without reverse transmissions RS90N RS90M For models with reverse transmissions RS90R RS90NR RS90GT RSGO90 W Make sure that no foreign material enters the drive chain housing 4 Install the dipstick making sure to align the notch in the dipstick handle with the projection 5 on the drive chain housing Adjusting the chain tension 1 Loosen the locknut 2 Turn the adjusting bolt clockwise until it is finger tight and then loosen it 1 4 turn 3 Hold the adjusting bolt in place while tightening the locknut D Locknut Adjusting bolt ESU00174 Checking the brake pads Check the brake pads for wear If the brake pads reach the wear limit ask a Yamaha
69. lant through the carburetor Make sure that the lever is in the ON position to allow the coolant to flow and warm the carburetor while the ambient temperature is below 0 C 32 F D Carburetor coolant shut off lever ON open OFF closed When operating the snowmobile in temperatures above 0 C 32 F move the carburetor coolant shut off lever to the OFF position to stop the flow of coolant since the carburetor does not need to be warmed ESU04130 Rear suspension damping force remote adjust ment dial For RS90R RS90GT RSG90 Turn the remote adjustment dial to adjust the rear sus pension damping force See page 8 25 for adjustment procedures Rear suspension damping force remote adjustment dial ESU02421 Storage compartment Open the storage compartment to store the tool kit spare parts or other small items gt RS90N RS90NR RS90M RS90R RS90GT RSG90 W ESU00072 PRE OPERATION CHECKS NOTE m a Pre operation checks should be made each time the snowmobile is used A WARNING 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 ESU00075 BOELA FRA Fuel f OD Ej Make sure that there is sufficient fuel in the fuel tank YK KO ITs VO DU Recommended fuel Un
70. leaded gasoline PRIM 88 or higher Fuel tank capacity 39 3 L 8 6 Imp gal 10 4 US gal A WARNING e Fuel is HIGHLY FLAMMABLE and poisonous Check the SAFETY INFORMATION section carefully before refueling See page 3 2 e Do not fill the fuel tank above the bottom of the filler tube 1 Fuel could overflow if the snowmo bile is tilted on its side or if the ambient tempera ture rises causing the fuel to warm up and expand e Make sure that the fuel tank cap is closed securely after refueling Leaking fuel can catch fire PBBBBB ecto 833 047 Pump octane Fuel level 6 1 e 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 e Make sure that snow or ice does not enter the fuel tank when refueling e Do not use alcohol deicers or water absorbing additives with oxygenated fuel e The fuel tank should be filled with straight gaso line as specified ESU04031 Engine oil Use a combination of the recommended SAE and API oil classifications shown in the chart below API SE SF SG or higher Use only 4 stroke engine oil 6 2 ESU03441 Engine oil level The engine oil level should be checked before each use Do not run the engine with too much or not enough oil in the oil tank Oil could flow into
71. lter element frame 1 Unhook the air filter case cover fasteners and the latch 2 Remove the air filter case cover 3 Lift up the air filter element frame and check the air filter element If there is any snow on the air filter ele ment remove the element and brush off the snow and then install the air filter element 4 Place the air filter element frame in its original posi tion and then install the air filter case cover Hook the fasteners and the latch onto the air filter case cover NOTE After riding the snowmobile make sure that there is no snow under the air filter element frame ESU00110 Fittings and fasteners Check the tightness of the fittings and fasteners Tighten in proper sequence and torque if necessary ESU00345 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 Towrope Jumper cables V belt Light bulbs Spark plugs When you start out for a long distance trip extra fuel and oil should be carried as well ESU00112 OPERATION ESU00366 Starting the engine A WARNING e Be sure to check the SAFETY INFORMATION section carefully before starting the engine e Make sure that the parking brake is applied NOTE
72. m Turns out lt gt Soft Hard With the adjuster fully turned in direction 8 Damping 8 21 Rebound damping force The rebound damping force of each ski shock absorber can be adjusted by turning the rebound damping force adjusting knob 2 20 clicks 10 clicks 3 clicks out out out i M j Adjusting knob position Minimum Standard Maximum Turns out Turnsin 8 gt Soft Hard With the adjuster fully turned in direction 8 NOTE SSS The damping forces will not decrease past the minimum levels even if the adjusting knobs are turned out more than the minimum settings The damping forces for the left and right ski shock absorbers must be adjusted to the same settings Uneven settings can cause poor handling and loss of stability A WARNING This shock absorber contains highly pressurized nitrogen gas It could explode by improper handling causing injury or property damage e Do not tamper with or attempt to open the shock absorber e Do not subject the shock absorber to an open flame or other high heat source which could cause it to explode e Do not deform or damage the shock absorber in any way e Do not dispose of a worn or damaged shock absorber by yourself Take the unit to a Yamaha dealer 8 22 ESU04043 Adjusting the rear suspension spring preload The rear suspension spring preload can be adjusted by tu
73. n disconnect the crankcase breather hose from the air filter case and then remove the air filter case Disconnect the negative battery lead Replace the blown fuse with one of the proper amperage Connect the negative battery lead Install the air filter case by reversing the removal steps When installing the air filter case connect the breather hose to the air filter case first and then connect it to the engine Be installing the air filter case sure to connect the breather hoses securely when NOTE If the fuse immediately blows again ask a Yamaha dealer to inspect the snowmobile 8 36 Specified fuses Main fuse HEAD Headlight fuse SIG Signal fuse 2 DC TERM Auxiliary DC jack fuse C W Carburetor warmer fuse IGN Ignition fuse Spare fuses 20 A 10A 15A Spare main fuse 8 37 ESU04241 gt W TROUBLESHOOTING Engine turns over but does not start Fuel system No fuel supplied to combustion cham ber No fuel in tank Supply fuel Clogged fuel line Clean fuel line Clogged carburetor Clean carbure tor Fuel supplied to combustion chamber Flooded engine too much choke Crank engine with throttle open or wipe the spark plugs dry Electrical system Poor or no spark Spark plugs are dirty with carbon or are wet Remove c
74. n possible the fuel tank should be empty during transportation especially if the trip takes longer than 30 minutes e lf transporting the snowmobile in an open trailer or truck put a tight fitting cover on the snowmobile A cover specifically designed for your snowmobile is best This will help keep foreign objects out of the cooling vents in the shroud and also help protect the snowmobile against damage from debris on the road e lf transporting the snowmobile in an open trailer or truck in areas where road salt is used coat metal suspension surfaces lightly with oil or another pro tectant This will help protect against corrosion Be sure to clean the snowmobile when you get to your destination to remove any corrosive salts ESU04960 PERIODIC MAINTENANCE Safety is an obligation of the owner Periodic inspection adjustment and lubrication will keep your snowmobile in the safest and most efficient condition possible The most impor tant points of snowmobile inspection adjustment and lubrication are explained on the fol lowing pages Maintenance replacement or repair of devices and systems related to emissions control may be performed by any repair establishment or individual that is certified if applicable A WARNING If you are not familiar with maintenance work have a Yamaha dealer do it for you PROPER PERIODIC MAINTENANCE OF YOUR SNOWMOBILE IS IMPORTANT IN ORDER TO ENJOY LONG PLEASURABLE SERVICE ESPECIALLY IMPORT
75. n when the engine is running immediately turn the engine off and have a Yamaha dealer check the snowmobile Continuing to operate the engine under such conditions could cause severe engine damage ESU03173 Cooling system Bleeding the cooling system A WARNING e Do not remove the coolant reservoir cap when the engine is hot Scalding hot fluid and steam may be blown out under pressure which could cause serious injury When the engine has cooled place a thick rag or towel over the coolant reservoir cap and slowly rotate the cap counterclockwise to the detent This procedure allows any residual pressure to escape When the hissing sound has stopped press down on the cap while turning counter clockwise and remove it e The cooling system must be bled of air if the coolant reservoir becomes empty if air can be seen in the cooling system or if there is a cooling system leak Consult a Yamaha dealer Operating the engine with an improperly bled cool ing system can cause overheating and severe engine damage Replenishing the coolant 1 Remove the coolant reservoir cap and add coolant until it reaches the COLD LEVEL mark Recommended coolant High quality ethylene glycol antifreeze containing corro sion inhibitors Antifreeze and water mixing ratio 60 40 Total amount For RS90N RS90R RS90NR RS90GT 4 8 L 4 22 Imp qt 5 07 US qt For RS90M RSG90 5 6 L 4 93 Imp qt 5 92 US qt D COLD LEVEL mark C
76. ners like you and only while your Yamaha is still within the Yamaha Limited Warranty period So visit your authorized Yamaha dealer to get all the facts He can show you how easy it is to protect your investment with Yamaha Extended Service We urge you to act now You ll get the excellent benefits of TRIP coverage right away and you ll rest easy knowing you l have strong factory backed protection even after your Yamaha Lim ited Warranty expires See your dealer today A special note If visiting your dealer isn t convenient contact Yamaha toll free at 1 866 937 3983 866 YES EXTD or visit our web site All you need to do is provide your vehicle s Primary ID number your Tunnel number We ll be happy to help you get the Y E S coverage you need Yamaha Service Marketing PO Box 6555 Cypress CA 90630 1 866 937 3983 www yamaha motor com Y YAMAHA EXTENDED SERVICE ESU04050 LOCATION OF THE IMPORTANT LABELS Please read the following labels carefully before operat ing this snowmobile NOTE 77 SSS Maintain or replace safety and instruction labels as nec essary RS90N RS90M WARNING AVERTISSEMENT SEK ED SEVERE INJURY OR DEATH MAY RESULT IF YOU IGNORE ANY AFIN D VITER TOUT RISQUE DE BLESSURE SERIEUSE OU MEME OF THE FOLLOWING MORTELLE VEUILLEZ SUIVRE LES RECOMMANDATIONS SUIVANTES Read the Owner s Manual and all labels before operating this vehicle Avant d utiliser ce v hicule lir
77. oolant reservoir cap 2 Start the engine and add coolant until the coolant level does not go down and then stop the engine 3 Fill the coolant reservoir with coolant until it reaches the COLD LEVEL mark 4 Install the coolant reservoir cap Check for any cool ant leakage NOTE If you find any leaks consult a Yamaha dealer 805 133 ESU01661 Replacing the V belt A WARNING When installing the new V belt make sure it is posi tioned from 1 5 mm 0 06 in above the edge of the secondary sheave assembly to 0 5 mm 0 02 in below the edge If not the V belt clutch engagement speed will be changed The snowmobile may move unexpectedly when the engine is started Adjust the V belt position by removing or adding a spacer 1 on each adjusting bolt Have a Yamaha dealer make this adjustment As the V belt wears adjustment may be necessary To ensure proper clutch performance the V belt position should be adjusted by adding a spacer on each adjusting bolt when the V belt position reaches 1 5 mm 0 06 in below the edge Have a Yamaha dealer make this adjustment New belt width 34 5 mm 1 36 in Belt wear limit width 32 5 mm 1 28 in NOTE Apply the parking brake before replacing the V belt 1 Remove the drive guard 2 Rotate the secondary sliding sheave clockwise 1 and push it so that it separates from the secondary fix
78. 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 RS90NL RS90RL RS90NRL RS90ML RS90GTL RSG90L OWNER S MANUAL 2005 by Yamaha Motor Corporation U S A 1st Edition July 2005 All rights reserved Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation U S A is expressly prohibited Printed in Japan P N LIT 12628 02 50 A WARNING PLEASE READ AND UNDERSTAND THIS MANUAL COMPLETELY BEFORE OPERATING THE SNOWMO BILE NOTE e 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 e This manual should be considered a permanent part of this snowmobile and should remain with the snow mobile when resold Particularly important information is distinguished in this manual by the following notations AN The Safety Alert Symbol means ATTENTION BECOME ALERT YOUR SAFETY IS INVOLVED A WARNING Failure to follow WARNING instructions could res
79. plugs and clean or replace them if necessary Perform all other pre operation and seasonal mainte nance checks listed in the periodic mainte nance chart NOTE Before installing the battery have a Yamaha dealer inspect and fully charge it For peak performance it is recommended that you have your snowmobile checked and tuned by a Yamaha dealer The dealer has the experience and training to help you get the maximum performance and use out of your Yamaha snowmobile ESU00228 ESU00229 Dimensions SPECIFICATIONS RS90N RS90R RS90NR RS90M RS90GT RSG90 Overall length Overall width Overall height Dry weight Ski stance 11 1 2 755 mm 108 5 in 3 185 mm 125 4 in 3 000 mm 118 1 in 1 225 mm 48 2 in 1 165 mm 45 9 in 1 090 mm 42 9 in 1 215 mm 47 8 in 1 250 mm 49 2 in 1 150 mm 45 3 in 246kg 5421b 250kg 551 Ib 266 kg 586 Ib 260 kg 573 Ib 1 086 mm 42 8 in 980 mm 38 6 in RS90N RS90R RS90NR RS90GT RS90M RSG90 RS90N RS90R RS90NR RS90GT RSG90 RS90M RS90N RS90NR RS90R RSG90 RS90M RS90GT RS90N RS90R RS90NR RS90GT RS90M RSG90 RS90N RS90R RS90NR RS90GT RSG90 RS90M ESU00230 Engine RS90N RS90R RS90NR RS90M RS90GT RSG90 Type Cylinder arrangement Displacement Bore x Stroke Idle speed Engine oil type Carburetor type Fuel Starting system ESU00231 Chassis Liquid cooled 4 stroke 12
80. pprouv et un habillement de motoneigiste __ snowmobiling Pr voir une protection pour les yeux J 8EK 77761 E0 RS90R RS90NR RS90GT RSG90 WARNING AVERTISSEMENT 0 SEVERE INJURY OR DEATH MAY RESULT IF YOU IGNORE ANY AFIN D EVITER TOUT RISQUE DE BLESSURE SERIEUSE OU MEME OF THE FOLLOWING MORTELLE VEUILLEZ SUIVRE LES RECOMMANDATIONS SUIVANTES Read the Owner s Manual and all labels before operating this vehicle Avant d utiliser ce v hicule lire le manuel du propri taire et toutes les tiquettes This vehicle is a high performance machine Ce v hicule est une machine haute performance It should be operated by an experienced operator Elle doit tre conduite par un conducteur exp riment Check throttle brake and steering for proper operation before starting engine Avant de d marrer le moteur v rifier l op ration du frein de l acc l rateur Set parking brake before attempting to start engine et de la direction Never run this vehicle with the parking brake applied Le frein de s curit doit tre appliqu lors du d marrage To stop engine in an emergency push the engine stop switch down Ne pas rouler avec le frein de s curit actionn Do not operate engine without drive belt or drive guard En cas d urgence utiliser l interrupteur d arr t du moteur Make sure the fuel tank cap is closed securely after refueling Ne pas laisser tourner le moteur sans la courro
81. r contrainte de ressort de suspension arri re mm BEEN read Parder m Soter 1falslals For RST90 Only 2 up adjusting block positions with without passenger es ace Postion du Pour la RST90 uniquement D ressort 2 Position des blocs de r glage avec sans passager NE Precom Gs PS Pr containte Soupe Dure Rear suspension torsion spring preload adjustment R glage de la pr contrainte de ressort de torsion de suspension arri re 3 Solo rider position Zup position rider and passenger e Spang preload IN te TE pur a N Position conduite solo Position conduite en duo pilote et passage 7 85 position PO reload So un Fard 1 Install the special tools and to the 2 gusting block 2 Pull the lock lever and turn the special tool lt to change the block positon 3 Release the lock lever Monter les outs sp ciaux C and sur bloc de r glage 2 Trer le levier de verrou lage et tourer out sp cial de modifier la positon du ce do r glage 3 Rel cher le levier de verrouilage ndu disposi de r glage o z Pr conrante Saupe eve Dure 8ES 2818B 00 8ES 2818B 00 RS90R RS90
82. rmer adjustment switch control the electrically heated handlebar grips and throttle lever respectively To raise the temperature press each switch to HI To lower the temperature press each switch to LO NOTE e The grip warmer indicator comes on and the dis play switches to the grip warmer level when the grip warmer adjustment switch is pressed e The thumb warmer indicator Z comes on and the display switches to the thumb warmer level when the thumb warmer adjustment switch is pressed e The grip thumb warmer level is displayed for 5 sec onds after releasing the grip thumb warmer adjust ment switch then switches to the fuel meter e Thetop segment of the grip thumb warmer level indica tor flashes once if the grip thumb warmer adjustment switch is continually pressed at the maximum level The bottom segment of the grip thumb warmer level indica tor flashes once if the grip thumb warmer adjustment Switch is continually pressed at the minimum level e When the engine is started the grip thumb warmer levels are set to the levels saved when the engine was stopped 5 5 ESU04260 Fuel level warning indicator The fuel level warning indicator indicates a malfunction ing sensor disconnected coupler broken lead or short circuit when detected by the self diagnosis device of the snowmobile The fuel level warning indicator D warning light and all segments of the fuel meter
83. rning the spring preload adjuster on the shock absorber RS90R RS90GT RSG90 or each shock absorber RS90N RS90NR RS90M For RS90N RS90NR Standard Spring seat length Increased lt Decreased Preload Harder lt gt Softer Maximum Minimum A Length front 123 5 113 5 mm 107 5 mm 4 86in 4 47in 4 23 in The spring seat length changes approximately 1 5 mm 0 06 in with each full turn of the adjuster For RS90M Spring adjuster position Preload B Standard front For RS90N RS90NR RS90M Spring adjuster position S M H Preload Soft Medium Hard C Standard rear M For RS90R RS90GT RSG90 Spring adjuster position Preload D Standard 8 23 NOTE SSS The rear suspension spring preload can be further adjusted by changing the position of the spring seat Have a Yamaha dealer make this adjustment as it requires special tools A WARNING Be sure to have a Yamaha dealer make this adjust ment This shock absorber contains highly pressurized nitrogen gas It could explode by improper handling causing injury or property damage e Do not tamper with or attempt to open the shock absorber e Do not subject the shock absorber to an open flame or other high heat sources which could cause it to explode e Do not deform or damage the
84. s 3 to 5 until the proper adjustment is achieved 7 Tighten the rear axle nut Rear axle tightening torque 75 Nm 7 5 m kgf 54 2 ft lb ESU02001 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 D is within specification Ski toe out 0 15 mm 0 0 59 in 3 If the alignment is not correct consult a Yamaha dealer ESU03543 Adjusting the handlebar For RS90R RS90GT RSG90 1 Remove the handlebar cover 819 096 2 Loosen the handlebar bolts 819 100 3 Move the handlebar up or down to adjust the handle bar height to the desired position 819 082 installed into the area shown 4 Tighten the handlebar bolts and install the handlebar cover Handlebar bolt tightening torque 14 5 Nm 1 45 m kgf 10 5 ft Ib Make sure that the small gap side of the handlebar 819011 holders faces forward 8 32 ESU00371 Lubrication Lubricate the following points Lubricant Low temperature grease 821 018 D Throttle cable end A WARNING Apply a dab of grease onto the cable end only Do not grease the throttle cable because it could become frozen which could cause loss of control Front suspension Rear suspension A WARNING Be sure to have a Yamaha dealer lubricate the front and rear suspensions
85. s for alti tude or conditions Ask a Yamaha dealer to inspect sticking primary sheave assembly Ask a Yamaha dealer to inspect Worn or sticking secondary sheave assembly Ask a Yamaha dealer to inspect 9 4 Worn or damaged bearings Noise or excessive vibration in drive chain and sprockets Broken V belt clutch components Ask a Yamaha dealer to inspect Ask a Yamaha dealer to inspect Worn or damaged V belt with flat spots Replace Worn or damaged idler wheels or shafts Ask a Yamaha dealer to inspect Worn or damaged drive track Ask a Yamaha dealer to inspect ESU03594 STORAGE Long term storage requires some preven tive procedures to guard against deteriora tion 1 Cleaning Thoroughly clean the snowmobile inside and out to remove the corrosive salts and acids that can accumulate Use Yamaha Mud Grease and Engine Cleaner or an equivalent product to loosen mud grease and grime Wash with mild soap then rinse and dry completely 2 Lubrication Lubricate moving parts suspension link age and pivot points Use the grease or lubricant specified in the MAINTENANCE section or Yamaha Lube Zall general pur pose lubricant Proper lubrication fights corrosion while it reduces friction 3 Fuel system Add Yamaha Fuel Stabilizer and Condi tioner or an equivalent stabilizer to the fuel tank to help prevent fuel oxidation and gum and varn
86. shock absorber in any way e Do not dispose of a worn or damaged shock absorber by yourself Take the unit to a Yamaha dealer 8 24 ESU04763 Adjusting the rear suspension damping forces For RS90R RS90GT RSG90 The rebound damping force can be adjusted by turning the rear suspension damping force remote adjustment dial in direction HARD or direction SOFT Rear suspension damping force remote adjustment dial Standard position A WARNING Do not turn the remote adjustment dial while the snowmobile is moving as this could cause loss of control an accident and injury 11 clicks 11 clicks ore H 1 Dial position MAX SOFT Standard HARD Direction D Direction 8 lt Damping force Soft Hard Be sure to stop the remote adjustment dial at a marked position around the dial where there is a click A WARNING This shock absorber contains highly pressurized nitrogen gas It could explode by improper handling causing injury or property damage e Do not tamper with or attempt to open the shock absorber e Do not subject the shock absorber to an open flame or other high heat source which could cause it to explode e Do not deform or damage the shock absorber in any way e Do not dispose of a worn or damaged shock absorber by yourself Take the unit to a Yamaha dealer 8 25 For RS90N RS90NR The compression damping force can be adjusted by turn ing
87. sket 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 Spark plug reach 8 19 0 mm 0 75 in Before installing any spark plug measure the electrode gap with a wire thickness gauge and adjust to specifica tion Spark plug gap 0 7 0 8 mm 0 028 0 031 in When installing the spark plug always clean the gasket surface Wipe off any grime from the threads and tighten the spark plug to the specified torque Spark plug tightening torque 12 5 Nm 1 25 m kgf 9 ft Ib Make sure that the spark plug caps are securely installed Otherwise the spark plug caps could be damaged due to engine vibration 8 6 ESU03701 Adjusting the engine idling speed e Be sure to have a Yamaha dealer make this adjustment e Make sure that the throttle lever moves smoothly e Make sure that the carburetor is synchronized first 1 Start the engine and warm it up NOTE Refer to the Starting the engine section 2 Turn the throttle stop screw 1 in or out to adjust the engine idle speed Standard engine idle speed 1 400 100 r min ESU01472 Adjusting the throttle cable Be sure to adjust th
88. splayed NOTE SSS To switch the speedometer odometer and tripmeter dis plays between kilometers and miles select the odometer mode ODO and then push the select reset button for at least 10 seconds while the snowmobile is stopped ESU00363 High beam indicator light The high beam indicator light 1 comes on when the high beams of the headlights are switched on See page 5 10 for headlight beam switch operation 5 4 FRE SOIRE URP HBBBH Hlo BERS eny im 833 070 JMPF ERHI i DE EXT Te ESU03821 Fuel meter and grip thumb warmer level indica tor The fuel meter and grip thumb warmer level indicator have eight segments 1 which show the amount of fuel remaining in the fuel tank the grip warmer level or the thumb warmer level Fuel meter As the fuel level decreases in the fuel tank the segments disappear until the level goes down to the last segment E Empty When this occurs the fuel level warning indicator 2 and the warning light 3 come on If the fuel level warning indicator and the warning light come on fill the fuel tank at the first opportunity NOTE SSS The snowmobile must be stopped on a level surface to obtain an accurate fuel meter reading The fuel meter reading changes as the snowmobile moves and depend ing on the inclination of the snowmobile Grip thumb warmer level indicator The grip warmer adjustment switch and the thumb wa
89. tempting to start the engine e Never run the snowmobile with the parking brake applied This may overheat the brake disc and reduce braking ability W ESU00341 Shift lever For RS90R RS90NR RS90GT RSG90 The shift lever is used to put the snowmobile into forward or reverse After coming to a complete stop pull the shift lever out slide it to FWD or to REV until it stops and then release it Shift lever Pull out Slide to FWD Forward Slide to REV Reverse Release Do not shift from FWD to REV or from REV to FWD while the snowmobile is moving Otherwise the drive system could be damaged 5 9 ESU00039 Headlight beam switch Push the headlight beam switch to change the headlight beam to high or low Headlight beam switch Push High beam Low beam ESU04301 Auxiliary DC jack For RS90GT The auxiliary DC jack is located in the front panel and can be used for accessories NOTE The auxiliary DC jack cannot be used if the engine is not running 1 Start the engine 2 Open the auxiliary DC jack D and then insert the accessory power plug into the jack NOTE After using the auxiliary DC jack be sure to remove the accessory power plug from the jack and close the auxil iary DC jack cap e Do not use accessories requiring more than the maximum rated capacity for the auxiliary DC jack This may overload th
90. trap to lift the snowmobile Do not use the strap as a mounting point for cargo or accessories 7 8 818 092 ESU00347 Driving A WARNING Be sure to read the SAFETY INFORMATION and Riding your snowmobile sections carefully before operating the snowmobile NOTE W SSS Make sure that the engine is warmed up enough before riding For RS90N RS90M 1 Release the parking brake by moving the parking brake lever to the right 2 Press the throttle lever slowly to move the snowmo bile 3 Turn the handlebar in the desired direction 4 Squeeze the brake lever to stop the snowmobile 5 Apply the parking brake by moving the parking brake lever to the left For RS90R RS90NR RS90GT RSG90 1 To select the desired operating position pull the shift lever out slide it to FWD or to REV until it stops and then release it Pull out Slide to FWD Forward 3 Slide to REV Reverse Release A WARNING e Make sure that the throttle lever is fully released and the snowmobile is at a full stop before shift ing e Be sure to slide the shift lever to FWD or REV until it stops completely and only while the engine is idling e Make sure that the area behind the snowmobile is clear before reversing Watch behind e Reduce speed and avoid sharp turning when operating the snowmobile in reverse 7 9 818 092 Do not shift from FWD to REV or from RE
91. uantity With oil filter cartridge replacement Without oil filter cartridge replacement Total amount 3 0 L 2 6 Imp qt 3 2 US qt 2 8 L 2 5 Imp qt 3 0 US qt 3 7 L 3 3 Imp qt 3 9 US qt Brake Type Hydraulic disc type ventilated disc Operation Handle lever left hand operated Throttle Operation Handle lever right hand operated 1 Subject to change according to elevation settings 2 Usually achieved after approximately 800 m 0 5 mi traveled ESU00232 Electric RS90N RS90R RS90NR RS90M RS90GT RSG90 Ignition system Spark plug Battery Headlight Tail brake light Meter light Indicator light Type Gap Capacity Maximum charge rate Bulb x Quantity Bulb x Quantity Bulb x Quantity Bulb x Quantity TCI R CR8E NGK 0 7 0 8 mm 0 028 0 031 in YTX20L BS 12 V 18 Ah 1 8 Amperes hr for 10 hrs 12 V 60 55 W x 2 12V 5 21 Wx2 14 V 50 mA x 6 14 V 80 mA 58 064 Dao a amp MM XM an un un amp an
92. ult in severe injury or death to the snowmobile operator a bystander or a person inspecting or repairing the snow mobile A CAUTION indicates special precautions that must be taken to avoid damage to the snowmobile NOTE A NOTE provides key information to make procedures easier or clearer ESU00003 CONTENTS YAMAHA MOTOR Drive 5 11 CORPORATION U S A V belt holders 5 11 SNOWMOBILE LIMITED Carburetor coolant shut off WARRANTY 1 1 levet iiie tees 5 12 Rear suspension damping force YAMAHA EXTENDED SERVICE remote adjustment dial 5 12 ES tue octets AEN 1 4 Qu ee ote LOCATION OF THE re CHECKS 2 IMPORTANT LABELS 24 ELE Engine oil decoris 6 2 Engine oil level 6 3 SAFETY INFORMATION 3 1 Coolant 02 scout itte ata d 6 4 Throttle lever 6 5 Throttle override system BES CE ONS eta usque PA TORS Eine RES 6 5 Brake nets tirer hes 6 6 CONTROL FUNCTIONS 5 1 Brake fluid leakage 6 7 Main switch 5 1 Velin a etie ase ae e 6 7 Starter lever choke 5 2 Drive 6 7 Throttle lever 5 2 Drive track ie 6 8 Engine o
93. valves Parallel 3 cylinder 973 cm 79 0 x 66 2 mm 3 12 x 2 61 in 1 400 100 r min API SE SF SG or higher SAE 0W 30 KEIHIN CVK40 x 3 Unleaded gasoline Pump octane b M 88 or higher Electric starter RS90N RS90R RS90NR RS90M RS90GT RSG90 Drive track and suspension Track Width Track deflection Length on ground Suspension type Drive sprocket Molded rubber fiber glass rod reinforced 381 mm 15 0 in 30 35 mm 1 18 1 38 in 100 N 10 kg 22 Ib RS90N RS90R RS90NR RS90M RS90GT 25 30 mm 0 98 1 18 in 100 N 10 kg 22 Ib RSG90 723 mm 28 5 in RS90N RS90NR 768 mm 30 2 in RS90R RS90GT 1 068 mm 42 0 in RS90M 960 mm 37 8 in RSG90 Slide Rail Suspension Quadruple polyethylene 9 teeth RS90N RS90R RS90NR RS90GT RSG90 Quadruple polyethylene 8 teeth RS90M RS90N RS90R RS90NR RS90M RS90GT RSG90 Transmission Type Sheave distance Sheave offset Engagement speed 4 Automatic centrifugal engagement infinite ly variable 3 8 1 1 1 Approx 268 5 mm 10 57 in Approx 15 mm 0 59 in Approx 3 600 r min R590N RS90NR RSG90 Approx 4 000 r min R590M Approx 3 500 r min RS90R RS90GT Shift speed 1 Approx 8 500 r min 2 Drive chain Silent chain enclosed in oil bath Reduction ratio 40 21 1 90 RS90N RS90NR 38 22 1 73 RS90R RS90GT 40 20 2 00 RS90M 39 22 1 77 RSG90 Fuel tank Tank capacity 39 3 L 8 6 Imp gal 10 4 US gal Oil q
94. ve 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 A WARNING Side hills and steep slopes are not rec ommended for a novice snowmobiler Riding downhill 852 003 When riding downhill keep speed to a min imum It is important to apply just enough throttle to keep the clutch engaged while descending the hill This will allow you to use engine compression to help slow the snowmobile and to keep the snowmobile from rolling freely down the hill Also apply the brake frequently with light pressure A WARNING Use extra caution when applying the brake during
95. verheating prevention 51 mm 2 0 in high profile system LR RE AASE 5 2 pattern drive 6 8 Throttle override system Slide 6 9 T O R S EE OPE A EE PC EE V aa CM 5 3 Skis and ski runners 6 9 Speedometer 5 4 Steering 6 10 High beam indicator light 5 4 Ligh pure ue 6 10 Fuel meter and grip thumb Air ie oet 6 10 warmer level 5 5 Fittings and fasteners 6 11 Fuel level warning indicator 5 6 Tool kit and recommended Oil level warning indicator 5 6 EQUIPMENT 6 11 Low coolant temperature indicator light 5 6 Coolant temperature warning OPERATION is 7 1 indiCator 2 eere ere 5 7 Starting un Self diagnostic 5 7 Break in y mieu E 7 2 Engine stop 5 5 8 Riding your snowmobile Brake 5 8 Getting to know your snowmobile 7 3 Parking brake lever 5 9 Learning to ride your snowmobile 7 3 Shift lover sise adieu 5 9 To Start out and accelerate frg Headlight beam switch 5 10 Braking
96. wear 6 8 and damage e wheels 8 29 8 31 Adjust replace if necessary Check for wear and damage e 6 9 Slide runners Replace if necessary e 5 8 5 9 d PME and fluid e 6 6 6 7 Brake and parking 8 18 8 19 brake Adjust free play and or re e place pads if necessary Replace brake fluid See NOTE on page 8 4 8 19 Check for slight free play Every DISC Drake Lubricate shaft with specified 1 600 km installation grease as required 1 000 mi E Check oil level e 8 16 8 17 Drive chain oil Replace e Check deflection Initial at 500 km 300 mi and every Drive chain Adjust if necessary 800 km 500 mi thereafter THE Check for wear and damage e 6 9 Skis and ski runners 9 Replace if necessary e Check operation e 6 10 Steering system Adjust toe out if necessary e Strap RS90M Check for damage e Replace if necessary Check operation Lights Replace bulbs if necessary SAONE Battery Check condition e Charge if necessary Itis recommended that these items be serviced by a Yamaha dealer Initial Every rues ds seasonally l or Item Remarks check 800km 4 000 km Page Daily 500 mi 2 500 mi 40hr 200hr Check engagement and shift e speed Adjust if necessary Whenever operating elevation is changed Inspect sheaves for wear damage Primary and second Inspect weights rollers and ary clutc

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