Owners Manual
Page 5
... ...18 Fuel level warning indicator ...20 Oil level warning indicator ...21 Coolant temperature warning indicator ...21 Self-diagnosis device ...22 Engine stop switch ...22 Headlight beam switch "LIGHTS" ...23 Grip/thumb warmer adjusting switch ...23 Auxiliary DC jack ...24 Helmet shield heater jack (RS90GT / RS90LTGT / RST90GT) ...25 Brake lever ...25 Parking brake lever ...26 Shift lever ...26 Drive guard ...27 V-belt holders ...28 Passenger grips (RST90GT) ...29 Passenger grip warmer switch (RST90 / RST90GT) ...29 Passenger footrests...
... ...18 Fuel level warning indicator ...20 Oil level warning indicator ...21 Coolant temperature warning indicator ...21 Self-diagnosis device ...22 Engine stop switch ...22 Headlight beam switch "LIGHTS" ...23 Grip/thumb warmer adjusting switch ...23 Auxiliary DC jack ...24 Helmet shield heater jack (RS90GT / RS90LTGT / RST90GT) ...25 Brake lever ...25 Parking brake lever ...26 Shift lever ...26 Drive guard ...27 V-belt holders ...28 Passenger grips (RST90GT) ...29 Passenger grip warmer switch (RST90 / RST90GT) ...29 Passenger footrests...
Owners Manual
Page 6
... parking brake ...92 Extrovert drive sprocket (RS90GT / RS90LTGT) ...95 Skis and ski runners ...95 Steering system ...96 Drive track and slide runners ...98 Lubrication ...102 Replacing a headlight bulb ...103 Adjusting the headlight beams ...107 Fittings and fasteners ...108 Battery ...108 Replacing a fuse ...109 Troubleshooting ...116 Storage ...120 Specifications ...122 Consumer information...125 Identification number records ...125 Vehicle Emission Control Information label ...126 YAMAHA MOTOR CORPORATION, U.S.A. SNOWMOBILE LIMITED WARRANTY...127 YAMAHA EXTENDED SERVICE...
... parking brake ...92 Extrovert drive sprocket (RS90GT / RS90LTGT) ...95 Skis and ski runners ...95 Steering system ...96 Drive track and slide runners ...98 Lubrication ...102 Replacing a headlight bulb ...103 Adjusting the headlight beams ...107 Fittings and fasteners ...108 Battery ...108 Replacing a fuse ...109 Troubleshooting ...116 Storage ...120 Specifications ...122 Consumer information...125 Identification number records ...125 Vehicle Emission Control Information label ...126 YAMAHA MOTOR CORPORATION, U.S.A. SNOWMOBILE LIMITED WARRANTY...127 YAMAHA EXTENDED SERVICE...
Owners Manual
Page 12
... may need help if you run out of fuel, have an accident, or damage your thumbs and fingers for operation of the controls. Perform the pre-operation checks each time you use of your snowmobile. 6 See page 46 for a list of control. Always ride with all labels. Apply the parking brake before starting the engine. Carrying a passenger can cause loss of...
... may need help if you run out of fuel, have an accident, or damage your thumbs and fingers for operation of the controls. Perform the pre-operation checks each time you use of your snowmobile. 6 See page 46 for a list of control. Always ride with all labels. Apply the parking brake before starting the engine. Carrying a passenger can cause loss of...
Owners Manual
Page 13
.... Fuel may cause severe personal injury. Safety information G Many surfaces such as hot water and space heaters, an open windows and doors, carbon monoxide can rapidly reach dangerous levels. G Do not run the engine outdoors where engine exhaust can be present even if you can quickly be overcome and be dangerous to release the throttle and apply the brake gently-not suddenly. Therefore, Yamaha...
.... Fuel may cause severe personal injury. Safety information G Many surfaces such as hot water and space heaters, an open windows and doors, carbon monoxide can rapidly reach dangerous levels. G Do not run the engine outdoors where engine exhaust can be present even if you can quickly be overcome and be dangerous to release the throttle and apply the brake gently-not suddenly. Therefore, Yamaha...
Owners Manual
Page 43
... oxygenated fuel. EWS00151 WARNING Read and understand the following information before handling shock absorbers that snow or ice does not enter the fuel tank when refueling. This may allow more precise handling and control over certain types of the left and right shock absorbers must be adjusted by turning the adjusting nuts. G Do not deform or damage the cylinders in the owner's tool kit...
... oxygenated fuel. EWS00151 WARNING Read and understand the following information before handling shock absorbers that snow or ice does not enter the fuel tank when refueling. This may allow more precise handling and control over certain types of the left and right shock absorbers must be adjusted by turning the adjusting nuts. G Do not deform or damage the cylinders in the owner's tool kit...
Owners Manual
Page 45
... the compression damping force, turn the adjusting knob in direction (a). Control functions To increase the compression damping force, turn the adjusting knob in direction (b). 1. To decrease the rebound damping force, turn the adjusting nut in direction (b). Center shock absorber 1. Rebound damping force adjusting knob 1. To increase the spring preload and thereby harden the suspension, turn the adjusting knob in...
... the compression damping force, turn the adjusting knob in direction (a). Control functions To increase the compression damping force, turn the adjusting knob in direction (b). 1. To decrease the rebound damping force, turn the adjusting nut in direction (b). Center shock absorber 1. Rebound damping force adjusting knob 1. To increase the spring preload and thereby harden the suspension, turn the adjusting knob in...
Owners Manual
Page 57
... starting the engine. WARNING! The beginning operator should practice control of the throttle and brake, and master turning techniques in tighter curves. Turning For most snow surfaces, "body English" is free of the turn gets sharper or is supplied with added safety and a more as ice and hardpacked snow require much longer stopping distances. As you should be practiced at higher speeds...
... starting the engine. WARNING! The beginning operator should practice control of the throttle and brake, and master turning techniques in tighter curves. Turning For most snow surfaces, "body English" is free of the turn gets sharper or is supplied with added safety and a more as ice and hardpacked snow require much longer stopping distances. As you should be practiced at higher speeds...
Owners Manual
Page 74
... indicate an intake track air leak or carburetion problem for inspection and possible repairs. If any spark plug to slowly break down and erode. The condition of the spark plugs can indicate the condition of the engine. Specified spark plug: Manufacturer: NGK Model: CR8E 1. Spark plugs are easy to inspect. When installing the right side cover, be something wrong with the engine. Periodic maintenance and adjustment ECS01040 EWS00710 NOTICE G WARNING Be...
... indicate an intake track air leak or carburetion problem for inspection and possible repairs. If any spark plug to slowly break down and erode. The condition of the spark plugs can indicate the condition of the engine. Specified spark plug: Manufacturer: NGK Model: CR8E 1. Spark plugs are easy to inspect. When installing the right side cover, be something wrong with the engine. Periodic maintenance and adjustment ECS01040 EWS00710 NOTICE G WARNING Be...
Owners Manual
Page 75
... 5. Periodic maintenance and adjustment When installing the spark plug, always clean the gasket surface. ESU11795 3. 1 Adjusting the engine idling speed (RST90) 1. 2. Throttle stop screw in or out to adjust the engine idling speed. 4. Remove the shroud, the left and right side covers, and the top cover. (See page 63 for removal procedures.) Remove the headlight unit bolt on a level surface and apply the parking brake. Wipe off...
... 5. Periodic maintenance and adjustment When installing the spark plug, always clean the gasket surface. ESU11795 3. 1 Adjusting the engine idling speed (RST90) 1. 2. Throttle stop screw in or out to adjust the engine idling speed. 4. Remove the shroud, the left and right side covers, and the top cover. (See page 63 for removal procedures.) Remove the headlight unit bolt on a level surface and apply the parking brake. Wipe off...
Owners Manual
Page 79
... for the clutch engagement speed.) WARNING! Throttle lever Unhook the headlight unit as shown, then lift it up and move it rearward, away from the air filter case cover. Remove the air filter case cover by turning the main switch to be limited to scratch the snowmobile when moving the headlight unit. [ECS00920] The T.O.R.S. Throttle lever pivot 2. Periodic maintenance and adjustment RS90GT / RS90LTGT 1. 2. If the engine speed does not...
... for the clutch engagement speed.) WARNING! Throttle lever Unhook the headlight unit as shown, then lift it up and move it rearward, away from the air filter case cover. Remove the air filter case cover by turning the main switch to be limited to scratch the snowmobile when moving the headlight unit. [ECS00920] The T.O.R.S. Throttle lever pivot 2. Periodic maintenance and adjustment RS90GT / RS90LTGT 1. 2. If the engine speed does not...
Owners Manual
Page 82
.... 8. 1 Place the air filter element frame in the top of the air filter case cover. 1 1. Slot 2. Lift up the air filter element frame and check the air filter element. Fit the weatherstrip on the air filter element, remove the element, brush off the snow, and then install the air filter element. 9. Air filter case cover fastener 2 1. Weatherstrip 76 If there is any snow on the headlight unit into...
.... 8. 1 Place the air filter element frame in the top of the air filter case cover. 1 1. Slot 2. Lift up the air filter element frame and check the air filter element. Fit the weatherstrip on the air filter element, remove the element, brush off the snow, and then install the air filter element. 9. Air filter case cover fastener 2 1. Weatherstrip 76 If there is any snow on the headlight unit into...
Owners Manual
Page 84
Periodic maintenance and adjustment ECS00482 NOTICE G G G Do not run the engine with too much or not enough oil in ), and then remove it off . Start the engine, warm it up by driving the snowmobile for 10-15 minutes, and then turn it off . Oil level gauge coupler 2. Be sure to change the engine oil after the first 800 km (500 mi) of operation, and...
Periodic maintenance and adjustment ECS00482 NOTICE G G G Do not run the engine with too much or not enough oil in ), and then remove it off . Start the engine, warm it up by driving the snowmobile for 10-15 minutes, and then turn it off . Oil level gauge coupler 2. Be sure to change the engine oil after the first 800 km (500 mi) of operation, and...
Owners Manual
Page 115
... sensor coupler. 1. RS90GT / RS90LTGT Unhook the headlight unit as shown, then lift it up and move it rearward, away from the air filter case cover. Headlight unit bolt 2. Remove the shroud, the left and right side covers, and the top cover. (See page 63 for the individual circuits, is located behind the right side cover. 1. Periodic maintenance and adjustment ESU14192 Replacing a fuse EWS00550 RST90GT WARNING...
... sensor coupler. 1. RS90GT / RS90LTGT Unhook the headlight unit as shown, then lift it up and move it rearward, away from the air filter case cover. Headlight unit bolt 2. Remove the shroud, the left and right side covers, and the top cover. (See page 63 for the individual circuits, is located behind the right side cover. 1. Periodic maintenance and adjustment ESU14192 Replacing a fuse EWS00550 RST90GT WARNING...
Owners Manual
Page 117
Periodic maintenance and adjustment RS90GT / RS90LTGT 1 1 1. Negative battery lead 10. Spare fuse 2. Fuse box "IGN" (ignition) fuse "FAN" (radiator fan) fuse "S/H" (helmet shield heater jack) fuse "HEAD" (headlight) fuse "SIG" (signaling system) fuse "DC" (auxiliary DC jack) fuse Spare fuse 111 Fuel injection system fuse 3. Replace the blown fuse with one of the proper amperage. 23 4 5 6 7 8 1. Main fuse 1. 2. 3. 4. 5. 6. 7. 8.
Periodic maintenance and adjustment RS90GT / RS90LTGT 1 1 1. Negative battery lead 10. Spare fuse 2. Fuse box "IGN" (ignition) fuse "FAN" (radiator fan) fuse "S/H" (helmet shield heater jack) fuse "HEAD" (headlight) fuse "SIG" (signaling system) fuse "DC" (auxiliary DC jack) fuse Spare fuse 111 Fuel injection system fuse 3. Replace the blown fuse with one of the proper amperage. 23 4 5 6 7 8 1. Main fuse 1. 2. 3. 4. 5. 6. 7. 8.
Owners Manual
Page 118
... maintenance and adjustment RST90GT 1 27 3 4 5 6 7 Specified fuses: Main fuse: 40.0 A Fuel injection system fuse: 10.0 A Ignition fuse: 15.0 A Radiator fan fuse: RS90GT 5.0 A RS90LTGT 5.0 A Headlight fuse: 20.0 A Signaling system fuse: 7.5 A Auxiliary DC jack fuse: 3.0 A Helmet shield heater jack fuse: 3.0 A Spare fuses: RS90GT / RS90LTGT 20.0 A, 15.0 A, 10.0 A, 7.5 A, 5.0 A, 3.0 A RST90GT 20.0 A, 15.0 A, 10.0 A, 7.5 A, 3.0 A 11. Install the headlight unit, making sure to fit the slots on its bottom onto the projections on its stay. 1. 2. 3. 4. 5. 6. 7. Fuse box "IGN" (ignition) fuse...
... maintenance and adjustment RST90GT 1 27 3 4 5 6 7 Specified fuses: Main fuse: 40.0 A Fuel injection system fuse: 10.0 A Ignition fuse: 15.0 A Radiator fan fuse: RS90GT 5.0 A RS90LTGT 5.0 A Headlight fuse: 20.0 A Signaling system fuse: 7.5 A Auxiliary DC jack fuse: 3.0 A Helmet shield heater jack fuse: 3.0 A Spare fuses: RS90GT / RS90LTGT 20.0 A, 15.0 A, 10.0 A, 7.5 A, 5.0 A, 3.0 A RST90GT 20.0 A, 15.0 A, 10.0 A, 7.5 A, 3.0 A 11. Install the headlight unit, making sure to fit the slots on its bottom onto the projections on its stay. 1. 2. 3. 4. 5. 6. 7. Fuse box "IGN" (ignition) fuse...
Owners Manual
Page 120
Main fuse 2. Lift up the air filter case, slide the crankcase breather hose clamp (air filter case side) down, disconnect the crankcase breather hose from the air filter case, and then remove the air filter case. 1 2 3 7 1. Fuse box "HEAD" (headlight) fuse "SIG" (signaling system) fuse "DC TERM" (auxiliary DC jack) fuse "C/W" (carburetor warmer) fuse "IGN" (ignition) fuse Spare fuse 114 Crankcase breather hose 1. Periodic maintenance and adjustment 1. Disconnect the negative battery lead. Spare main fuse 7. Replace the blown fuse with...
Main fuse 2. Lift up the air filter case, slide the crankcase breather hose clamp (air filter case side) down, disconnect the crankcase breather hose from the air filter case, and then remove the air filter case. 1 2 3 7 1. Fuse box "HEAD" (headlight) fuse "SIG" (signaling system) fuse "DC TERM" (auxiliary DC jack) fuse "C/W" (carburetor warmer) fuse "IGN" (ignition) fuse Spare fuse 114 Crankcase breather hose 1. Periodic maintenance and adjustment 1. Disconnect the negative battery lead. Spare main fuse 7. Replace the blown fuse with...
Owners Manual
Page 121
... air filter case, connect the crankcase breather hose to the air filter case first, and then connect it to inspect the snowmobile. 115 Connect the negative battery lead. 11. Install the air filter case by reversing the removal steps 3-7. Periodic maintenance and adjustment Specified fuses: Main fuse: 30.0 A Spare main fuse: 30.0 A Headlight fuse: 20.0 A Signaling system fuse: 10.0 A Auxiliary DC jack fuse: 3.0 A Carburetor warmer fuse: 20.0 A Ignition fuse: 15.0 A Spare fuses...
... air filter case, connect the crankcase breather hose to the air filter case first, and then connect it to inspect the snowmobile. 115 Connect the negative battery lead. 11. Install the air filter case by reversing the removal steps 3-7. Periodic maintenance and adjustment Specified fuses: Main fuse: 30.0 A Spare main fuse: 30.0 A Headlight fuse: 20.0 A Signaling system fuse: 10.0 A Auxiliary DC jack fuse: 3.0 A Carburetor warmer fuse: 20.0 A Ignition fuse: 15.0 A Spare fuses...
Owners Manual
Page 126
... part of the slide rail suspension, front suspension and brakes), electric components (couplers, connectors, instruments, switches and lights), breather hoses and vents. Use Yamaha Mud, Grease, and Engine Cleaner, or an equivalent product, to protect both the combustion chamber and crankshaft from corrosion. For snowmobiles equipped with mild detergent and water to internal engine components. In areas where oxygenated fuel (gasohol) is essential to prevent...
... part of the slide rail suspension, front suspension and brakes), electric components (couplers, connectors, instruments, switches and lights), breather hoses and vents. Use Yamaha Mud, Grease, and Engine Cleaner, or an equivalent product, to protect both the combustion chamber and crankshaft from corrosion. For snowmobiles equipped with mild detergent and water to internal engine components. In areas where oxygenated fuel (gasohol) is essential to prevent...
Owners Manual
Page 133
... routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track. You may locate your nearest authorized Yamaha dealer through your local telephone directory. Parts used in material and workmanship for warranty by this warranty shall include parts replaced due to conform at the time of manufacture and that it is imperative that new Yamaha snowmobiles purchased from defects in warranty repairs will...
... routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track. You may locate your nearest authorized Yamaha dealer through your local telephone directory. Parts used in material and workmanship for warranty by this warranty shall include parts replaced due to conform at the time of manufacture and that it is imperative that new Yamaha snowmobiles purchased from defects in warranty repairs will...
Owners Manual
Page 135
... selling dealer at the time of purchase. If you should I contact if I have further questions about this warranty? YAMAHA MOTOR CORPORATION, U.S.A. Whom should move after you . If the dealer is not able to any authorized Yamaha snowmobile dealer within the continental United States. Mail to contact Yamaha Motor Corporation, U.S.A., for his setup, service and warranty repair work. If you must take...
... selling dealer at the time of purchase. If you should I contact if I have further questions about this warranty? YAMAHA MOTOR CORPORATION, U.S.A. Whom should move after you . If the dealer is not able to any authorized Yamaha snowmobile dealer within the continental United States. Mail to contact Yamaha Motor Corporation, U.S.A., for his setup, service and warranty repair work. If you must take...