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
... the parking brake before starting the engine. Such use on surfaces other snowmobilers when going on public streets, roads, or highways. Perform the pre-operation checks each time you ...running into wires could collide with the parking brake applied. Always ride with all labels. This may result if you operate your snowmobile. 3 Become familiar with other than snow or ice. Your ability to operate the snowmobile is designed to inspect or maintain the vehicle properly increases the possibility of control. Safety information ESU10183 G As the vehicle's owner...
... the parking brake before starting the engine. Such use on surfaces other snowmobilers when going on public streets, roads, or highways. Perform the pre-operation checks each time you ...running into wires could collide with the parking brake applied. Always ride with all labels. This may result if you operate your snowmobile. 3 Become familiar with other than snow or ice. Your ability to operate the snowmobile is designed to inspect or maintain the vehicle properly increases the possibility of control. Safety information ESU10183 G As the vehicle's owner...
Owners Manual
Page 10
... may leak out from a Yamaha dealer, have been designed, tested, and approved by Yamaha, or the removal of original equipment 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. Even if you try to ventilate engine exhaust with fans or open flame, sparks...
... may leak out from a Yamaha dealer, have been designed, tested, and approved by Yamaha, or the removal of original equipment 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. Even if you try to ventilate engine exhaust with fans or open flame, sparks...
Owners Manual
Page 25
... riding conditions. The spring preload can be adjusted by turning the adjusting nuts. Control functions in your eyes, see your clothes. G Do not subject the shock absorbers to the same setting. Consult a Yamaha dealer. Gasohol containing methanol is not recommended. Make sure that contain highly pressurized nitrogen gas. The fuel tank should be adjusted to an open the cylinder assemblies. Adjust the spring...
... riding conditions. The spring preload can be adjusted by turning the adjusting nuts. Control functions in your eyes, see your clothes. G Do not subject the shock absorbers to the same setting. Consult a Yamaha dealer. Gasohol containing methanol is not recommended. Make sure that contain highly pressurized nitrogen gas. The fuel tank should be adjusted to an open the cylinder assemblies. Adjust the spring...
Owners Manual
Page 33
... engine oil must be changed and the oil filter cartridge replaced. Become familiar with operating your snowmobile. 27 You should practice control of the controls. G Avoid higher speeds or more difficult maneuvers. A snowmobile is essential to familiarize yourself with your snowmobile and all warning and notice labels on the handlebar during the engine break-in this area is supplied with added safety...
... engine oil must be changed and the oil filter cartridge replaced. Become familiar with operating your snowmobile. 27 You should practice control of the controls. G Avoid higher speeds or more difficult maneuvers. A snowmobile is essential to familiarize yourself with your snowmobile and all warning and notice labels on the handlebar during the engine break-in this area is supplied with added safety...
Owners Manual
Page 34
... to reduce your snowmobile. Once the engine has warmed up, you approach a hill, ac- 28 Turning For most snow surfaces, "body English" is made at low speeds many times, in the desired direction. Operation Set the parking brake and follow the instructions on the throttle or steer to the outside of the turn. The V-belt clutch will start out and accelerate 1. 2. Do not...
... to reduce your snowmobile. Once the engine has warmed up, you approach a hill, ac- 28 Turning For most snow surfaces, "body English" is made at low speeds many times, in the desired direction. Operation Set the parking brake and follow the instructions on the throttle or steer to the outside of the turn. The V-belt clutch will start out and accelerate 1. 2. Do not...
Owners Manual
Page 35
... the engine, release the parking brake, and descend the hill. On climbs straight up a hill, do not spin the track. Operation celerate before you to shift your body weight as you to properly position your weight to maintain proper balance. It is also important to keep speed to lock, causing a loss of an accident. This will cause the drive track to...
... the engine, release the parking brake, and descend the hill. On climbs straight up a hill, do not spin the track. Operation celerate before you to shift your body weight as you to properly position your weight to maintain proper balance. It is also important to keep speed to lock, causing a loss of an accident. This will cause the drive track to...
Owners Manual
Page 40
... ensure cleaner air, but are explained on body parts or clothing, and electrical parts that is cold. Periodic maintenance and adjustment ESU11451 Periodic inspection, adjustment, and lubrication will keep your risk of injury or death during service or while using the snowmobile. The most efficient condition possible. EWS00700 WARNING Turn off the engine when performing maintenance unless otherwise specified. Maintenance, replacement, or repair of vehicle inspection...
... ensure cleaner air, but are explained on body parts or clothing, and electrical parts that is cold. Periodic maintenance and adjustment ESU11451 Periodic inspection, adjustment, and lubrication will keep your risk of injury or death during service or while using the snowmobile. The most efficient condition possible. EWS00700 WARNING Turn off the engine when performing maintenance unless otherwise specified. Maintenance, replacement, or repair of vehicle inspection...
Owners Manual
Page 46
... spark plugs The spark plug is an important engine component and is too long, overheating and engine damage may not work properly. If a spark plug shows a distinctly different color, there could indicate an intake track air leak or carburetion problem for inspection and possible repairs. If the reach is easy to diagnose such problems yourself. Specified spark plug: Manufacturer: NGK Model: CR8E 1. Spark plug gap: 0.7-0.8 mm (0.028-0.031 in several different thread lengths. Spark plug...
... spark plugs The spark plug is an important engine component and is too long, overheating and engine damage may not work properly. If a spark plug shows a distinctly different color, there could indicate an intake track air leak or carburetion problem for inspection and possible repairs. If the reach is easy to diagnose such problems yourself. Specified spark plug: Manufacturer: NGK Model: CR8E 1. Spark plug gap: 0.7-0.8 mm (0.028-0.031 in several different thread lengths. Spark plug...
Owners Manual
Page 50
... less oxygen available for the drive chain gears and V-belt clutch to avoid poor performance and rapid wear. Common problems are an important part of elevation. If you bought it . 14. ESU11910 Carburetors The carburetors are hard starting, bogging, and plug fouling. High-altitude settings Operating at high altitude makes the air/fuel ratio too rich, which require very sophisticated adjustment. Periodic maintenance...
... less oxygen available for the drive chain gears and V-belt clutch to avoid poor performance and rapid wear. Common problems are an important part of elevation. If you bought it . 14. ESU11910 Carburetors The carburetors are hard starting, bogging, and plug fouling. High-altitude settings Operating at high altitude makes the air/fuel ratio too rich, which require very sophisticated adjustment. Periodic maintenance...
Owners Manual
Page 55
... the snowmobile on the cap while turning counterclockwise and remove it reaches the "COLD LEVEL" mark. (See the following section "Replenishing the coolant" for more details.) NOTICE: Hard water or salt water is harmful to the engine parts. If the coolant level is a cooling system leak. Install the right side cover and the shroud. Check the coolant level in an emergency. [ECS00491...
... the snowmobile on the cap while turning counterclockwise and remove it reaches the "COLD LEVEL" mark. (See the following section "Replenishing the coolant" for more details.) NOTICE: Hard water or salt water is harmful to the engine parts. If the coolant level is a cooling system leak. Install the right side cover and the shroud. Check the coolant level in an emergency. [ECS00491...
Owners Manual
Page 70
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 remove the air filter case. 1. "HEAD" (headlight) fuse "SIG" (signal) fuse "DC TERM" (auxiliary DC jack) fuse "C/W" (carburetor warmer) fuse "IGN" (ignition) fuse Spare fuse 6. Loosen the joint clamp bolts. 1. Oil tank breather hose clamp 2. Joint clamp bolt 5. Fastener 4. Oil tank breather hose 1. 2. 3. 4. 5. 6. Main fuse 2. Spare main fuse 1. Periodic maintenance and adjustment 7. Disconnect the negative battery lead...
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 remove the air filter case. 1. "HEAD" (headlight) fuse "SIG" (signal) fuse "DC TERM" (auxiliary DC jack) fuse "C/W" (carburetor warmer) fuse "IGN" (ignition) fuse Spare fuse 6. Loosen the joint clamp bolts. 1. Oil tank breather hose clamp 2. Joint clamp bolt 5. Fastener 4. Oil tank breather hose 1. 2. 3. 4. 5. 6. Main fuse 2. Spare main fuse 1. Periodic maintenance and adjustment 7. Disconnect the negative battery lead...
Owners Manual
Page 71
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: 20.0 A Spare fuses: 20.0 A, 10.0 A, 3.0 A 8. 9. 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. Install the top cover, the right side cover, the...
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: 20.0 A Spare fuses: 20.0 A, 10.0 A, 3.0 A 8. 9. 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. Install the top cover, the right side cover, the...
Owners Manual
Page 72
... the throttle switch connectors and connect the wire harness connectors together to a Yamaha dealer immediately for jump-starting the engine. in tank: Supply fuel. ↓ • Clogged fuel line: Clean fuel line. ↓ • Clogged carburetor: Clean carburetor. This can be started using a fully-charged 12-volt battery and jumper cables. WARNING! Discharged battery If the battery is an important safety device; Electrical system G Poor spark or no spark • Spark plugs...
... the throttle switch connectors and connect the wire harness connectors together to a Yamaha dealer immediately for jump-starting the engine. in tank: Supply fuel. ↓ • Clogged fuel line: Clean fuel line. ↓ • Clogged carburetor: Clean carburetor. This can be started using a fully-charged 12-volt battery and jumper cables. WARNING! Discharged battery If the battery is an important safety device; Electrical system G Poor spark or no spark • Spark plugs...
Owners Manual
Page 74
... of the battery used to jump start -Fuel system" above . G Faulty spark plugs: Replace the spark plugs. Clogged fuel system: See "Engine turns over several times with the ignition off to the black (-) connecting lead. Engine overheats G G Electric starter does not operate or operates slowly G Engine stop switch is caused by poor lubrication, inadequate fuel, or an air leak. Discharged battery: Charge battery or see "Discharged battery" above . Ask a Yamaha dealer to inspect. Start the engine. Disconnect...
... of the battery used to jump start -Fuel system" above . G Faulty spark plugs: Replace the spark plugs. Clogged fuel system: See "Engine turns over several times with the ignition off to the black (-) connecting lead. Engine overheats G G Electric starter does not operate or operates slowly G Engine stop switch is caused by poor lubrication, inadequate fuel, or an air leak. Discharged battery: Charge battery or see "Discharged battery" above . Ask a Yamaha dealer to inspect. Start the engine. Disconnect...
Owners Manual
Page 76
... rail suspension, front suspension and brakes), electric components (couplers, connectors, instruments, switches and lights), breather hoses and vents. NOTICE G G G G Improper cleaning can damage plastic parts such as they cause water seepage and deterioration in storage, starting the engine occasionally during the storage period can cause more important in areas where oxygenated fuel (gasohol) is essential to prevent costly rust and corrosion damage to guard...
... rail suspension, front suspension and brakes), electric components (couplers, connectors, instruments, switches and lights), breather hoses and vents. NOTICE G G G G Improper cleaning can damage plastic parts such as they cause water seepage and deterioration in storage, starting the engine occasionally during the storage period can cause more important in areas where oxygenated fuel (gasohol) is essential to prevent costly rust and corrosion damage to guard...
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
... inspection and repairs at that the vehicle is designed, built, and equipped so as a result of owner abuse and/or lack of parts or accessories that the machine be to an authorized Yamaha snowmobile dealer of business. Installation of proper maintenance are not qualitatively equivalent to normal wear or routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track. WARRANTY TRANSFER...
... inspection and repairs at that the vehicle is designed, built, and equipped so as a result of owner abuse and/or lack of parts or accessories that the machine be to an authorized Yamaha snowmobile dealer of business. Installation of proper maintenance are not qualitatively equivalent to normal wear or routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track. WARRANTY TRANSFER...
Owners Manual
Page 83
.... 3. If you are handled at the time of the dealership. Since all first purchasers against the possibility of a safety-related defect and recall. Explain the operation, maintenance, and warranty requirements to include the model, serial number, names, dates, and receipts. be sure to your purchase. If a question or problem arises regarding warranty, first contact the owner of your satisfaction at...
.... 3. If you are handled at the time of the dealership. Since all first purchasers against the possibility of a safety-related defect and recall. Explain the operation, maintenance, and warranty requirements to include the model, serial number, names, dates, and receipts. be sure to your purchase. If a question or problem arises regarding warranty, first contact the owner of your satisfaction at...
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...