Owners Manual
Page 5
... control system ...34 General maintenance and lubrication chart ...36 Tool kit ...38 Removing and installing the shroud and covers ...38 Checking the spark plugs ...40 Adjusting the engine idling speed ...41 Adjusting the throttle cable free play ...41 Checking the throttle override system (T.O.R.S.) ...41 Checking the air filter ...42 Carburetors ...44 High-altitude settings ...44 Valve clearance ...44 Engine oil and oil filter cartridge ...45 Cooling system ...48 V-belt ...50 Drive chain...
... control system ...34 General maintenance and lubrication chart ...36 Tool kit ...38 Removing and installing the shroud and covers ...38 Checking the spark plugs ...40 Adjusting the engine idling speed ...41 Adjusting the throttle cable free play ...41 Checking the throttle override system (T.O.R.S.) ...41 Checking the air filter ...42 Carburetors ...44 High-altitude settings ...44 Valve clearance ...44 Engine oil and oil filter cartridge ...45 Cooling system ...48 V-belt ...50 Drive chain...
Owners Manual
Page 9
... snowmobile was not manufactured for use the following . Safety information ESU10183 G As the vehicle's owner, you are prohibited. Severe injury or death may result if you ignore any control or function you could cause an accident and injury. Apply the parking brake before starting the engine. Never drive the snowmobile with another vehicle. Your ability to inspect or maintain the...
... snowmobile was not manufactured for use the following . Safety information ESU10183 G As the vehicle's owner, you are prohibited. Severe injury or death may result if you ignore any control or function you could cause an accident and injury. Apply the parking brake before starting the engine. Never drive the snowmobile with another vehicle. Your ability to inspect or maintain the...
Owners Manual
Page 10
... available only from the fuel breather hose. Never store the snowmobile with fans or open flame, sparks, clothes dryers, and the like. Fuel may also make the snowmobile illegal to ventilate engine exhaust with fuel in an enclosed space. 4 Modifications made to test the products that these aftermarket companies produce. Maintenance and storage G G G G G Genuine Yamaha Accessories Choosing accessories for Yamaha vehicles. Carbon monoxide is to...
... available only from the fuel breather hose. Never store the snowmobile with fans or open flame, sparks, clothes dryers, and the like. Fuel may also make the snowmobile illegal to ventilate engine exhaust with fuel in an enclosed space. 4 Modifications made to test the products that these aftermarket companies produce. Maintenance and storage G G G G G Genuine Yamaha Accessories Choosing accessories for Yamaha vehicles. Carbon monoxide is to...
Owners Manual
Page 25
... fuel: REGULAR UNLEADED GASOLINE ONLY Fuel tank capacity: 36.2 L (9.56 US gal, 7.96 Imp.gal) Your Yamaha engine has been designed to the same setting. ECS00080 EWS00151 WARNING Read and understand the following information before handling shock absorbers that snow or ice does not enter the fuel tank when refueling. G Do not deform or damage the cylinders in poor damping performance. ESU10893 NOTICE G G G G Oxygenated fuels...
... fuel: REGULAR UNLEADED GASOLINE ONLY Fuel tank capacity: 36.2 L (9.56 US gal, 7.96 Imp.gal) Your Yamaha engine has been designed to the same setting. ECS00080 EWS00151 WARNING Read and understand the following information before handling shock absorbers that snow or ice does not enter the fuel tank when refueling. G Do not deform or damage the cylinders in poor damping performance. ESU10893 NOTICE G G G G Oxygenated fuels...
Owners Manual
Page 33
... snowmobile. The short time spent checking the condition of its controls. G Avoid higher speeds or more difficult terrain. If any engine trouble should select a large flat area to help protect you ride, always perform the pre-operation checks listed on page 3. However, it idle for the first time Start the engine and let it is a rider active vehicle, and your riding...
... snowmobile. The short time spent checking the condition of its controls. G Avoid higher speeds or more difficult terrain. If any engine trouble should select a large flat area to help protect you ride, always perform the pre-operation checks listed on page 3. However, it idle for the first time Start the engine and let it is a rider active vehicle, and your riding...
Owners Manual
Page 34
... to perform it at higher speeds. Do not try steeper or more difficult climbs only after you should practice first on the throttle or steer to the outside of the turn and lean your snowmobile begins to tip while turning, lean more as abrupt throttle changes, excessive braking, incorrect body movements, or too much longer stopping distances. With the engine idling, release the parking brake...
... to perform it at higher speeds. Do not try steeper or more difficult climbs only after you should practice first on the throttle or steer to the outside of the turn and lean your snowmobile begins to tip while turning, lean more as abrupt throttle changes, excessive braking, incorrect body movements, or too much longer stopping distances. With the engine idling, release the parking brake...
Owners Manual
Page 35
... of control. This will make it easier for you to keep the snowmobile from the uphill side. A recommended riding position is also important to use en- 29 Stop the engine and set the parking brake. Excessive braking will cause the drive track to keep speed to shift your downhill leg on the running board. It is pointed downhill, mount your weight...
... of control. This will make it easier for you to keep the snowmobile from the uphill side. A recommended riding position is also important to use en- 29 Stop the engine and set the parking brake. Excessive braking will cause the drive track to keep speed to shift your downhill leg on the running board. It is pointed downhill, mount your weight...
Owners Manual
Page 40
.... EWS00700 WARNING Turn off the engine when performing maintenance unless otherwise specified. Proper periodic maintenance of the vehicle owner/operator. Especially important are trained and equipped to perform these particular services. Safety is cold. In the following pages. INITIAL ITEM REMARKS 1 month or 800 km (500 mi) (40 hr) EVERY Seasonally or 4000 km (2500 mi) (200 hr) PAGE Spark plugs * Valve clearance • Check condition...
.... EWS00700 WARNING Turn off the engine when performing maintenance unless otherwise specified. Proper periodic maintenance of the vehicle owner/operator. Especially important are trained and equipped to perform these particular services. Safety is cold. In the following pages. INITIAL ITEM REMARKS 1 month or 800 km (500 mi) (40 hr) EVERY Seasonally or 4000 km (2500 mi) (200 hr) PAGE Spark plugs * Valve clearance • Check condition...
Owners Manual
Page 46
... air leak or carburetion problem for that cylinder. For example, a very white center electrode porcelain color could be sure to diagnose such problems yourself. You should periodically remove and inspect the spark plug because heat and deposits will form on the white porcelain insulator around the center electrode. Specified spark plug: Manufacturer: NGK Model: CR8E 1. Spark plug reach Before installing any spark plug, measure the electrode gap with a wire...
... air leak or carburetion problem for that cylinder. For example, a very white center electrode porcelain color could be sure to diagnose such problems yourself. You should periodically remove and inspect the spark plug because heat and deposits will form on the white porcelain insulator around the center electrode. Specified spark plug: Manufacturer: NGK Model: CR8E 1. Spark plug reach Before installing any spark plug, measure the electrode gap with a wire...
Owners Manual
Page 50
... wire harness in the periodic maintenance chart. Less air means less oxygen available for the drive chain gears and V-belt clutch to a Yamaha dealer, who has the necessary professional knowledge and experience. Remember: Less air at higher altitudes. Consult a Yamaha dealer. [ECS00431] ESU11950 12. Therefore, carburetor adjustments should be adjusted when operating above a high altitude of the problems found in improper air-fuel mixture and/or engine noise...
... wire harness in the periodic maintenance chart. Less air means less oxygen available for the drive chain gears and V-belt clutch to a Yamaha dealer, who has the necessary professional knowledge and experience. Remember: Less air at higher altitudes. Consult a Yamaha dealer. [ECS00431] ESU11950 12. Therefore, carburetor adjustments should be adjusted when operating above a high altitude of the problems found in improper air-fuel mixture and/or engine noise...
Owners Manual
Page 55
... down on a level surface and apply the parking brake. 2. Install the right side cover and the shroud. Bleeding the cooling system The cooling system must be bled of air if the coolant reservoir becomes empty, if air can cause overheating and severe engine damage. Coolant reservoir cap ECS00500 NOTICE Operating the engine with an improperly bled cooling system can be used temporarily in an...
... down on a level surface and apply the parking brake. 2. Install the right side cover and the shroud. Bleeding the cooling system The cooling system must be bled of air if the coolant reservoir becomes empty, if air can cause overheating and severe engine damage. Coolant reservoir cap ECS00500 NOTICE Operating the engine with an improperly bled cooling system can be used temporarily in an...
Owners Manual
Page 70
Oil tank breather hose clamp 2. "HEAD" (headlight) fuse "SIG" (signal) fuse "DC TERM" (auxiliary DC jack) fuse "C/W" (carburetor warmer) fuse "IGN" (ignition) fuse Spare fuse 6. Spare main fuse 1. Fastener 4. Loosen the joint clamp bolts. 1. Periodic maintenance and adjustment 7. Oil tank breather hose 1. 2. 3. 4. 5. 6. Disconnect the negative battery lead. 64 Replace the blown fuse with one of the proper amperage. 1. Lift up the air filter case, slide the oil tank breather hose clamp down, disconnect the oil tank breather hose from the air filter case, and then...
Oil tank breather hose clamp 2. "HEAD" (headlight) fuse "SIG" (signal) fuse "DC TERM" (auxiliary DC jack) fuse "C/W" (carburetor warmer) fuse "IGN" (ignition) fuse Spare fuse 6. Spare main fuse 1. Fastener 4. Loosen the joint clamp bolts. 1. Periodic maintenance and adjustment 7. Oil tank breather hose 1. 2. 3. 4. 5. 6. Disconnect the negative battery lead. 64 Replace the blown fuse with one of the proper amperage. 1. Lift up the air filter case, slide the oil tank breather hose clamp down, disconnect the oil tank breather hose from the air filter case, and then...
Owners Manual
Page 71
... negative battery lead. Install the air filter case by reversing the removal steps. TIP If the fuse immediately blows again, ask a Yamaha dealer to connect the breather hoses securely when installing the air filter case. [ECS00641] 12. Periodic maintenance and adjustment Specified fuses: Main fuse: 30.0 A Spare main fuse: 30.0 A "HEAD" (headlight) fuse: 20.0 A "SIG" (signal) fuse: 10.0 A "DC TERM" (auxiliary DC jack) fuse: 3.0 A "C/W" (carburetor warmer) fuse: 20.0 A "IGN" (ignition) fuse...
... negative battery lead. Install the air filter case by reversing the removal steps. TIP If the fuse immediately blows again, ask a Yamaha dealer to connect the breather hoses securely when installing the air filter case. [ECS00641] 12. Periodic maintenance and adjustment Specified fuses: Main fuse: 30.0 A Spare main fuse: 30.0 A "HEAD" (headlight) fuse: 20.0 A "SIG" (signal) fuse: 10.0 A "DC TERM" (auxiliary DC jack) fuse: 3.0 A "C/W" (carburetor warmer) fuse: 20.0 A "IGN" (ignition) fuse...
Owners Manual
Page 72
.... Electrical system G Poor spark or no spark • Spark plugs are dirty with throttle open or wipe the spark plugs dry. WARNING! Discharged battery If the battery is an important safety device; in tank: Supply fuel. ↓ • Clogged fuel line: Clean fuel line. ↓ • Clogged carburetor: Clean carburetor. Two connecting leads have been provided for jump-starting the engine. Replace if necessary. ↓ • Faulty ignition system: Ask a Yamaha...
.... Electrical system G Poor spark or no spark • Spark plugs are dirty with throttle open or wipe the spark plugs dry. WARNING! Discharged battery If the battery is an important safety device; in tank: Supply fuel. ↓ • Clogged fuel line: Clean fuel line. ↓ • Clogged carburetor: Clean carburetor. Two connecting leads have been provided for jump-starting the engine. Replace if necessary. ↓ • Faulty ignition system: Ask a Yamaha...
Owners Manual
Page 74
... coolant: Add coolant. Engine overheats G G Electric starter does not operate or operates slowly G Engine stop switch is low G 8. 9. 10. 11. 12. 13. 14. Seized engine: Seizure is flashing: Warm the engine up. "Hydrostatic lock" occurs when fuel has filled the cylinders when the vehicle has been transported: Remove the spark plugs and turn the engine over but does not start the engine. Incorrect carburetor jetting for altitude or conditions: Ask a Yamaha...
... coolant: Add coolant. Engine overheats G G Electric starter does not operate or operates slowly G Engine stop switch is low G 8. 9. 10. 11. 12. 13. 14. Seized engine: Seizure is flashing: Warm the engine up. "Hydrostatic lock" occurs when fuel has filled the cylinders when the vehicle has been transported: Remove the spark plugs and turn the engine over but does not start the engine. Incorrect carburetor jetting for altitude or conditions: Ask a Yamaha...
Owners Manual
Page 76
... a windshield: Do not use any Engine Proper storage of the slide rail suspension, front suspension and brakes), electric components (couplers, connectors, instruments, switches and lights), breather hoses and vents. For snowmobiles equipped with mild soap, then rinse and dry completely. Use Yamaha Stor-Rite Engine Fogging Oil, or an equivalent fogging oil, to guard against deterioration. Cleaning Thoroughly clean the snowmobile, inside and out, to remove the air filter...
... a windshield: Do not use any Engine Proper storage of the slide rail suspension, front suspension and brakes), electric components (couplers, connectors, instruments, switches and lights), breather hoses and vents. For snowmobiles equipped with mild soap, then rinse and dry completely. Use Yamaha Stor-Rite Engine Fogging Oil, or an equivalent fogging oil, to guard against deterioration. Cleaning Thoroughly clean the snowmobile, inside and out, to remove the air filter...
Owners Manual
Page 78
...in) Length on ground: RS90GT 768 mm (30.2 in) RS90LT 960 mm (37.8 in) RS90LTGT 960 mm (37.8 in) RS90R 768 mm (30.2 in) Rear suspension: Type: Slide rail suspension Track sprocket wheel: Material: Polyethylene Number of teeth: 9 Transmission: Clutch type: Automatic centrifugal ...Idling speed: 1300-1500 r/min Engine oil: Recommended grade: API service SG type or higher, JASO standard MA Type: YAMALUBE 4 0W-30, SAE 0W-30 Carburetor: Manufacturer: KEIHIN Model × quantity: CVK40 × 3 Fuel: Type: REGULAR UNLEADED GASOLINE ONLY Minimum pump octane (R+M)/2: 86 Starting system: Electric starter...
...in) Length on ground: RS90GT 768 mm (30.2 in) RS90LT 960 mm (37.8 in) RS90LTGT 960 mm (37.8 in) RS90R 768 mm (30.2 in) Rear suspension: Type: Slide rail suspension Track sprocket wheel: Material: Polyethylene Number of teeth: 9 Transmission: Clutch type: Automatic centrifugal ...Idling speed: 1300-1500 r/min Engine oil: Recommended grade: API service SG type or higher, JASO standard MA Type: YAMALUBE 4 0W-30, SAE 0W-30 Carburetor: Manufacturer: KEIHIN Model × quantity: CVK40 × 3 Fuel: Type: REGULAR UNLEADED GASOLINE ONLY Minimum pump octane (R+M)/2: 86 Starting system: Electric starter...
Owners Manual
Page 81
... U.S. Installation of parts or accessories that the machine be free from defects in material and workmanship for inspection and repairs at that new Yamaha snowmobiles purchased from an authorized Yamaha snowmobile dealer in the appropriate Owner's Manual. WARRANTY TRANSFER: To transfer any remaining warranty from the original purchaser to normal wear or routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track...
... U.S. Installation of parts or accessories that the machine be free from defects in material and workmanship for inspection and repairs at that new Yamaha snowmobiles purchased from an authorized Yamaha snowmobile dealer in the appropriate Owner's Manual. WARRANTY TRANSFER: To transfer any remaining warranty from the original purchaser to normal wear or routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track...
Owners Manual
Page 83
... list of a safety-related defect and recall. YAMAHA MOTOR CORPORATION, U.S.A. Consumer information Q. Each Yamaha snowmobile dealer is expected to include the model, serial number, names, dates, and receipts. Mail to any later date. 3. If a question or problem arises regarding warranty, first contact the owner of purchase. WARRANTY DEPARTMENT P.O. Be sure to : 1. A. by sending a postcard listing your snowmobile model name, engine serial number...
... list of a safety-related defect and recall. YAMAHA MOTOR CORPORATION, U.S.A. Consumer information Q. Each Yamaha snowmobile dealer is expected to include the model, serial number, names, dates, and receipts. Mail to any later date. 3. If a question or problem arises regarding warranty, first contact the owner of purchase. WARRANTY DEPARTMENT P.O. Be sure to : 1. A. by sending a postcard listing your snowmobile model name, engine serial number...
Owners Manual
Page 85
... A Air filter, checking...42 Auxiliary DC jack ...14 B Battery...62 Brake and parking brake ...54 Brake lever ...15 Break-in...26 C Carburetors ...44 Control rod, adjusting ...22 Coolant temperature warning indicator ...13 Cooling system...48 D Drive chain housing...53 Drive guard...17 Drive track and slide runners ...57 Drive track life, maximizing ...31 Driving ...31 E Engine idling speed, adjusting ...41 Engine oil and oil filter cartridge ...45 Engine overheating prevention system ...8 Engine stop switch ...13 F Fittings and fasteners...62 Fuel ...18 Fuel...
... A Air filter, checking...42 Auxiliary DC jack ...14 B Battery...62 Brake and parking brake ...54 Brake lever ...15 Break-in...26 C Carburetors ...44 Control rod, adjusting ...22 Coolant temperature warning indicator ...13 Cooling system...48 D Drive chain housing...53 Drive guard...17 Drive track and slide runners ...57 Drive track life, maximizing ...31 Driving ...31 E Engine idling speed, adjusting ...41 Engine oil and oil filter cartridge ...45 Engine overheating prevention system ...8 Engine stop switch ...13 F Fittings and fasteners...62 Fuel ...18 Fuel...