OWNER’S MANUALSNOWMOBILERS90NWRS90RW/RS90NRWRS90MW/RS90MSWRS90GTWRSG90W/RSG90GTW8GG-28199-12LIT-12628-02-55PRINTED ON RECYCLED PAPERPRINTED IN JAPAN20
1-3CW-09EQ. What responsibility does my dealer have under thiswarranty?A. Each Yamaha snowmobile dealer is expected to:1. Completely set up every new
10-2CAUTION:@ ●Always keep the battery charged.Storing a discharged battery cancause permanent battery damage. ●To charge a sealed-type (MF) battery,a
11-1ESU00228 11-SPECIFICATIONSESU00229 Dimensions CS-01EESU00230 EngineCS-02ERS90N/RS90R/RS90NR/RS90M/RS90MSRS90GT/RSG90/RSG90GTOverall length 2,755 m
11-2ESU00231 ChassisCS-03ECarburetor type KEIHIN, CVK40 × 3Fuel Unleaded gasolinePump octane (R+M)/2; 86 or higherStarting system Electric starterRS90
11-3Transmission:Type Automatic centrifugal engagement, infinite-ly variable 3.8:1–1:1Sheave distance Approx. 268.5 mm (10.57 in)Sheave offset Approx.
11-4ESU00232 ElectricCS-04ERS90N/RS90R/RS90NR/RS90M/RS90MSRS90GT/RSG90/RSG90GTIgnition system TCISpark plug Type · R · CR8E (NGK)Gap 0.7–0.8 mm (0.028
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12-1ESU00233 1-WIRING DIAGRAMOFFONHILOOFFONSTARTRUNSTOPCLOSEOPENG/BChBGL/RGGL/RBWLgBDgBL/ WGLgBY(3A) (20A) (10A) (20A)(20A) (15A)(BLACK)PO/RB/WL/ YWCh
12-21Crankshaft position sensor2AC magneto3Rectifier/regulator4Main switch5Load control relay6Main fuse7Starter relay8Starter motor9Battery0Engine sto
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1-4ESU04280 YAMAHA EXTENDED SERVICE (Y.E.S.)CW-06EE_8gg.book Page 4 Thursday, March 16, 2006 4:23 PM
OWNER’S MANUALSNOWMOBILERS90NWRS90RW/RS90NRWRS90MW/RS90MSWRS90GTWRSG90W/RSG90GTW8GG-28199-12LIT-12628-02-55PRINTED ON RECYCLED PAPERPRINTED IN JAPAN20
2-1ESU04050 2-LOCATION OF THE IMPORTANT LABELSPlease read the following labels carefully before operat-ing this snowmobile.NOTE:@ Maintain or replace
2-23455RS90GT/RSG90GT6 RS90M/RS90MS7 RS90M/RS90MS8ES-14488-00CAUTION ATTENTIONSevere engine damage can result from oil loss if crankcase breather hose
2-38 RS90M/RS90MS/RSG90/RSG90GT9 RS90MS 8FS-24875-E0Do not use the carrierto lift the snowmobile.Ne pas soulever la motoneigeen tirant sur le porte-ba
2-4NOTE:@ The following suspension adjustment charts are includedwith the Owner’s Manual. @ RS90N/RS90NR/RS90M/RS90MSRS90R/RS90GT/RSG90/RSG90GTE_8gg.b
3-1ESU00008 3-SAFETY INFORMATIONWhen you ride your snowmobile, you must know and usethe following for your safety. Severe injury or death mayresult if
3-27. Do not allow anyone to stand behind the snowmobilewhen starting, inspecting, or adjusting the snowmo-bile. A broken track, track fittings, or de
3-33. This snowmobile is not designed for use on surfacesother than snow or ice. Use on dirt, sand, grass,rocks, or bare pavement may cause loss of co
4-1ESU000124-DESCRIPTIONRS90N/RS90NRRS90MRSG90/RSG90GTRS90R/RS90GTRS90MSE_8gg.book Page 1 Thursday, March 16, 2006 4:23 PM
4-21Windshield2Steering handlebar3Seat4Frame5Storage compartment6Rear carrier7Slide rail suspension8Rear suspension damping force remote adjustment di
5-1ESU00013 5-CONTROL FUNCTIONSESU00362Main switchThe main switch controls the following items.1“OFF” The ignition circuit is switched off. The key ca
5-2ESU00201 Starter lever (choke)Use the starter lever (choke) when starting and warmingup a cold engine.1Starter lever (choke) 2When starting a cold
5-3ESU04151 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 whe
5-4ESU04160 Speedometer unitThe speedometer unit is equipped with the following:●a digital speedometer (which shows riding speed)●an odometer (which s
5-5ESU03824 Fuel meter and grip/thumb warmer level indica-torThe fuel meter and grip/thumb warmer level indicatorhave eight segments 1 which show the
5-6ESU04260 Fuel level warning indicatorThe fuel level warning indicator indicates a malfunction-ing sensor, disconnected coupler, broken lead, or sho
5-7ESU04180 Coolant temperature warning indicatorIf the engine overheats, the coolant temperature warningindicator 1 and the warning light 2 come on.
5-8ESU00031 Engine stop switchThe engine stop switch 1 is used to stop the engine inan emergency. Simply push 2 the stop switch to stop theengine. To
5-9ESU00035Parking brake leverWhen parking the snowmobile or starting the engine,apply the parking brake by moving the brake lever 1 tothe left. To re
ESU002861-MACHINE IDENTIFICATIONIdentification number recordsA. FRAME NUMBER:CZ-01EB. ENGINE NUMBER (PRIMARY ID):CZ-01EC. KEY NUMBER:CZ-01ERecord the
5-10ESU00039Headlight beam switchPush the headlight beam switch to change the headlightbeam to high or low.1Headlight beam switch 2Push 3High beam 4Lo
5-11ESU00481 Shroud latchesTo open the shroud, unhook the shroud latches, and thenslowly raise the shroud forward until it stops. When clos-ing the sh
5-12ESU04080 Carburetor coolant shut-off leverFor RS90M/RS90MSThe carburetor coolant shut-off lever controls the flow ofcoolant through the carburetor
5-13ESU05020 Rear carrierFor RS90MSThe rear carrier is located at the rear of the snowmobile.1Rear carrierWARNING@ Do not use the rear carrier to lift
6-1ESU000726-PRE-OPERATION CHECKSNOTE:@ Pre-operation checks should be made each time thesnowmobile is used. @WARNING@ The engine and muffler will be
6-2CAUTION:@ ●Oxygenated fuels (gasohol) containing a maxi-mum 5% of ethanol can be used, although richerjetting may be required to prevent engine dam
6-3ESU03442 Engine oil levelThe engine oil level should be checked before each use.CAUTION:@ Do not run the engine with too much or not enoughoil in t
6-46. Insert the oil level gauge/dipstick into the oil fillerhole, and then tighten it securely.7. Connect the oil level gauge coupler. ESU00086 Coola
6-5ESU00087 Throttle leverCheck the throttle lever operation before starting theengine. The throttle lever must open smoothly and spring back toits ho
6-6ESU00091 Brake1. Brake lever Test the brake at a low speed when starting out tomake sure that it is working properly. If the brakedoes not provide
ESU00011 2-INTRODUCTIONCongratulations on your purchase of a Yamaha snowmo-bile. This model is the result of Yamaha’s vast experiencein the production
6-7ESU00093Brake fluid leakageApply the brake for a few minutes. Check to see if anybrake fluid leaks out from the brake hose joints or themaster cyli
6-8ESU00097Drive trackCheck the drive track for deflection, wear, or damage. Adjust or replace if necessary. (See pages 8-31–8-33 formore details.)WAR
6-9ESU00982 Slide runnersCheck the slide runners for wear and damage. If the slide runners reach the wear limit, they should bereplaced.1Slide runners
6-10ESU00103 Steering systemCheck the handlebar for excessive free play:1. Push the handlebar up and down and back and forth.2. Turn the handlebar sli
6-11ESU00110Fittings and fastenersCheck the tightness of the fittings and fasteners. Tighten in proper sequence and torque if necessary. ESU00345Tool
7-1ESU00112 7-OPERATIONESU00366Starting the engineWARNING@ ●Be sure to check the “SAFETY INFORMATION”section carefully before starting the engine. ●Ma
7-2ESU00380Break-inThere is never a more important period in the life of yourengine than the period between 0 and 500 km (300 mi).For this reason, you
7-3ESU01272 Riding your snowmobileGetting to know your snowmobileA snowmobile is a rider active vehicle, andyour riding position and your balance aret
7-4Tur n ingFor most snow surfaces, “body English” isthe key to turning.As you approach a curve, slow down andbegin to turn the handlebar in the desir
7-5Riding downhillWhen riding downhill, keep speed to a min-imum. It is important to apply just enoughthrottle to keep the clutch engaged whiledescend
WARNING@ PLEASE READ AND UNDERSTAND THIS MANUALCOMPLETELY BEFORE OPERATING THE SNOWMO-BILE. @NOTE:@ ●Yamaha continually seeks advancements in productd
7-6Hard-packed snowIt can be more difficult to negotiate onhard-packed snow as both the skis anddrive track do not have as much traction aswhen the sn
7-7ESU00251Maximizing drive track lifeRecommendationsTrack tensionDuring initial break-in, the new drive track will tend tostretch quickly as the trac
7-8ESU00245 StrapFor RS90M/RS90MSThe strap 1 should be used only by experienced opera-tors to assist them when traverse (side-hill) riding.WARNING@ Im
7-9ESU03471 DrivingWARNING@ Be sure to read the “SAFETY INFORMATION” and“Riding your snowmobile” sections carefully beforeoperating the snowmobile. @N
7-10CAUTION:@ Do not shift from “FWD” to “REV” or from “REV” to“FWD” while the snowmobile is moving. Otherwise,the drive system could be damaged. @NOT
7-11ESU00367TransportingWhen transporting your snowmobile on a trailer or in atruck, observe the following recommendations to helpprotect it from dama
8-1ESU04960 8-PERIODIC MAINTENANCESafety is an obligation of the owner. Periodic inspection, adjustment, and lubrication willkeep your snowmobile in t
8-2ESU04980 General maintenance and lubrication chartCD-32E∗Fuel lineCheck fuel hose for cracks or damage.Replace if necessary.●∗Idle speedCheck and a
8-3Drive guardCheck for cracks, bends or damage.∗Replace if necessary.●5-11, 6-7V-beltCheck for wear and damage.Replace if necessary.●6-7,8-14–8-16Dri
8-4NOTE:@ Brake system: ●After disassembling the master cylinder or caliper cylinder, always change the brakefluid. Regularly check the brake fluid le
ESU00003 CONTENTSYAMAHA MOTOR CORPORATION, U.S.A. SNOWMOBILE LIMITED WARRANTY...1-1YAMAHA EXTENDED SERVICE (Y.E.S.
8-5ESU03761 Tool kitThe owner’s tool kit has the tools which are sufficient formost periodic maintenance and minor repairs. A torquewrench is also nec
8-6Spark plugs are produced in several different threadlengths. The thread length or reach is the distance fromthe spark plug gasket seat to the end o
8-7ESU03701 Adjusting the engine idling speedCAUTION:@ ●Be sure to have a Yamaha dealer make thisadjustment. ●Make sure that the throttle lever moves
8-8ESU04860 Adjusting the high-altitude settingsOperating at high altitude reduces the performance of agasoline engine about 3% for every 305 m (1,000
8-9ESU04202 Changing the engine oilIt is recommended to have a Yamaha dealer change theengine oil.WARNING@ Engine oil is extremely hot immediately aft
8-107. Remove the oil filter cartridge 9 with an oil filterwrench.NOTE:@ An oil filter wrench is available at a Yamaha dealer. @8. Apply a thin coat o
8-1113. Add sufficient oil of the recommended type to raise itto the “H” level mark on the oil level gauge/dipstick.(See page 6-3 for the checking pro
8-12ESU03173 Cooling systemBleeding the cooling systemWARNING@ ●Do not remove the coolant reservoir cap whenthe engine is hot. Scalding hot fluid and
8-131“COLD LEVEL” mark 2Coolant reservoir cap2. Start the engine and add coolant until the coolantlevel does not go down, and then stop the engine.3.
8-14ESU01661 Replacing the V-beltWARNING@ When installing the new V-belt, make sure it is posi-tioned from 1.5 mm (0.06 in) above the edge of thesecon
Riding uphill ...7-4Riding downhill ...7-5Traversing a slope ...
8-153. Pull 3 the V-belt up over the secondary fixed sheave. 4. Remove the V-belt from the secondary sheaveassembly and primary sheave assembly. 5. Pu
8-168. Install the V-belt over the primary sheave assembly. 9. Rotate the secondary sliding sheave clockwise 6and push 7 it so that it separates from
8-173. Remove the dipstick and check that the oil is betweenthe maximum and minimum level marks. If the oil isbelow the minimum level mark, add suffic
8-18ESU01741 Checking the brake padsCheck the brake pads for wear. If the brake pads reach the wear limit, ask a Yamahadealer to replace them.1Brake p
8-19ESU00180 Checking the brake fluid levelPlace the snowmobile on a level surface. Check that thebrake fluid is above the lower level and replenish w
8-20ESU01912 Adjusting the ski spring preloadThe spring preload can be adjusted by turning the springpreload adjuster 1.For RS90R/RSG90CD-11EFor RS90M
8-21WARNING@ This shock absorber contains highly pressurizednitrogen gas. It could explode by improper handling,causing injury or property damage. ●Do
8-223. Remove the air valve cap 2 from the shock absorber. 4. Install the hose connector 3 of the special pumponto the air valve of the shock absorber
8-23CAUTION:@ Do not exceed 1,034 kPa (10.3 kgf/cm2, 150 psi). @7. Install the air valve cap.NOTE:@ If the front suspension bottoms too easily or roll
8-24ESU04750 Adjusting the ski damping forcesFor RS90GT/RSG90GTCompression damping forceThe compression damping force of each ski shockabsorber can be
1-1ESU05070 1-YAMAHA MOTOR CORPORATION, U.S.A. SNOWMOBILE LIMITED WARRANTYCW-07EYamaha Motor Corporation, U.S.A. hereby warrants thatnew Yamaha snowmo
8-25WARNING@ This shock absorber contains highly pressurizednitrogen gas. It could explode by improper handling,causing injury, or property damage. ●D
8-26For RS90N/RS90NR/RS90M/RS90MSCD-23EFor RS90R/RS90GT/RSG90/RSG90GTCD-26ENOTE:@ The rear suspension spring preload can be furtheradjusted by changin
8-27ESU04763 Adjusting the rear suspension damping forcesFor RS90R/RS90GT/RSG90/RSG90GTThe rebound damping force can be adjusted by turningthe rear su
8-28For RS90N/RS90NRThe compression damping force can be adjusted by turn-ing the adjuster 1.CD-30ECAUTION:@ ●Do not continue to turn the adjuster ind
8-29ESU04092 Adjusting the control rodsThe weight transfer can be adjusted by turning the con-trol rod adjuster or adjusting nut.For RS90R/RS90GT/RSG9
8-30For RS90N/RS90NR/RS90M/RS90MS1. Loosen the locknut 1.2. Turn the control rod adjusting nut 2 in direction a toincrease weight transfer or directio
8-31ESU03532 Adjusting the drive trackWARNING@ A broken track, track fittings or debris thrown by thedrive track could be dangerous to an operator orb
8-32Adjusting the drive trackWARNING@ ●Be sure to have a Yamaha dealer make thisadjustment. ●Support the snowmobile securely on a suitablestand before
8-33CAUTION:@ The right and left adjusters should be turned to anequal amount. @6. Recheck alignment and deflection. If necessary,repeat steps 3 to 5
8-342. Loosen the handlebar bolts.3. Move the handlebar up or down to adjust the handle-bar height to the desired position.CAUTION:@ Make sure that th
1-2CW-08EYAMAHA MOTOR CORPORATION, U.S.A.MAKES NO OTHER WARRANTY OF ANY KIND,EXPRESSED OR IMPLIED. ALL IMPLIED WAR-RANTIES OF MERCHANTABILITY AND FIT-
8-35ESU00371LubricationLubricate the following points.1Throttle cable endWARNING@ Apply a dab of grease onto the cable end only. Donot grease the thro
8-36ESU02082 Replacing a headlight bulb1. Lift up the shroud. 2. Disconnect the headlight coupler. 3. Remove the bulb holder cover. 4. Unhook the bulb
8-37ESU00355BatteryThis snowmobile is equipped with a sealed-type (MF)battery, which does not require any maintenance. Thereis no need to check the el
8-381. Lift up the shroud. 2. Remove the right side cover 1. 3. Unhook the latch 2. 4. Loosen the clamp screws 3. 5. Slide the oil tank breather hose
8-39ESpare fuses (20 A, 10 A, 15 A, 3 A) FSpare main fuse Specified fuses: 9Main fuse: 30 A0“HEAD” (Headlight) fuse: 20 AA“SIG” (Signal) fuse: 10 AB“D
9-1ESU04241 9-TROUBLESHOOTINGA. Engine turns over but does not start1. Fuel systemNo fuel supplied to combustion cham-ber ●No fuel in tank ... Supply
9-2CAUTION:@ Use the connecting leads to jump-startthe snowmobile only. Do not use theconnecting leads for any other purpose. @1. Apply the parking br
9-38. Start the engine.9. Disconnect the black (-) jumper cablefrom the black (-) connecting lead, andthen pull the cover completely over thelead term
9-4G. Snowmobile does not move 1. Malfunctioning V-belt clutch ... Ask aYamaha dealer to inspect. 2. Drive track does not move ... Foreignobject is ca
10-1ESU03594 10-STORAGELong-term storage requires some preven-tive procedures to guard against deteriora-tion.1. Cleaning Thoroughly clean the snowmob
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