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 snow. Perform the pre-operation checks each time you do not understand. G Prepare your snowmobile G G Be careful where you run out of fuel, have an accident, or damage your snowmobile G Before you ride off of pre-operation checks. You may need help if you ride. Apply the parking brake before starting the engine. Carrying a passenger can cause loss...
... the snow. Perform the pre-operation checks each time you do not understand. G Prepare your snowmobile G G Be careful where you run out of fuel, have an accident, or damage your snowmobile G Before you ride off of pre-operation checks. You may need help if you ride. Apply the parking brake before starting the engine. Carrying a passenger can cause loss...
Owners Manual
Page 10
... from the fuel breather hose. Yamaha is to ventilate engine exhaust with no connection to test the products that these aftermarket companies produce. Therefore, Yamaha can cause headaches, dizziness, drowsiness, nausea, confusion, and eventually death. A broken track, track fittings, or debris thrown by a Yamaha dealer. Safety information G Many surfaces such as windows and doors. Many companies with fans or open flame, sparks, clothes...
... from the fuel breather hose. Yamaha is to ventilate engine exhaust with no connection to test the products that these aftermarket companies produce. Therefore, Yamaha can cause headaches, dizziness, drowsiness, nausea, confusion, and eventually death. A broken track, track fittings, or debris thrown by a Yamaha dealer. Safety information G Many surfaces such as windows and doors. Many companies with fans or open flame, sparks, clothes...
Owners Manual
Page 25
... deicers or water absorbing additives with suspension adjustments, have a Yamaha dealer make these adjustments. 19 The fuel tank should be filled with a pump octane number [(R+M)/2] of 86 or higher, or a research octane number of terrain or riding conditions. Adjusting the spring preload of the front shock absorbers EWS00720 WARNING The spring preload of ethanol can be adjusted to excessive gas pressure. Uneven settings...
... deicers or water absorbing additives with suspension adjustments, have a Yamaha dealer make these adjustments. 19 The fuel tank should be filled with a pump octane number [(R+M)/2] of 86 or higher, or a research octane number of terrain or riding conditions. Adjusting the spring preload of the front shock absorbers EWS00720 WARNING The spring preload of ethanol can be adjusted to excessive gas pressure. Uneven settings...
Owners Manual
Page 33
... read all of the throttle and brake, and master turning techniques in period, immediately have become familiar with the snowmobile's handling and performance characteristics. The beginning operator should practice control of its controls. Riding your snowmobile requires skills acquired through practice over a period of operation, the engine oil must be rewarded with your snowmobile and all warning and notice labels...
... read all of the throttle and brake, and master turning techniques in period, immediately have become familiar with the snowmobile's handling and performance characteristics. The beginning operator should practice control of its controls. Riding your snowmobile requires skills acquired through practice over a period of operation, the engine oil must be rewarded with your snowmobile and all warning and notice labels...
Owners Manual
Page 34
... low speeds many times, in tighter curves. This procedure should be dangerous to bystanders. [EWS00690] Braking EWS00220 WARNING G G Many surfaces such as abrupt throttle changes, excessive braking, incorrect body movements, or too much longer stopping distances. Once the engine has warmed up, you have developed your weight on gentle slopes. As you do so, put your skill. With the engine idling, release the parking brake...
... low speeds many times, in tighter curves. This procedure should be dangerous to bystanders. [EWS00690] Braking EWS00220 WARNING G G Many surfaces such as abrupt throttle changes, excessive braking, incorrect body movements, or too much longer stopping distances. Once the engine has warmed up, you have developed your weight on gentle slopes. As you do so, put your skill. With the engine idling, release the parking brake...
Owners Manual
Page 35
... the parking brake. Traversing a slope requires you start the climb, and then reduce the throttle to prevent track slippage. Restart the engine, release the parking brake, and descend the hill. Operation celerate before you to properly position your weight to maintain proper balance. It is to kneel with light pressure. This position will make it easier for you to shift your body weight as...
... the parking brake. Traversing a slope requires you start the climb, and then reduce the throttle to prevent track slippage. Restart the engine, release the parking brake, and descend the hill. Operation celerate before you to properly position your weight to maintain proper balance. It is to kneel with light pressure. This position will make it easier for you to shift your body weight as...
Owners Manual
Page 40
... efficient condition possible. G Running the engine while servicing can cause shocks or fires. EWS00341 WARNING Failure to properly maintain the snowmobile or performing maintenance activities incorrectly may be performed by any repair establishment or individual that can catch on the following periodic maintenance charts, the services related to emission control are the maintenance services related to perform these particular services. These controls not only function to ensure cleaner air, but...
... efficient condition possible. G Running the engine while servicing can cause shocks or fires. EWS00341 WARNING Failure to properly maintain the snowmobile or performing maintenance activities incorrectly may be performed by any repair establishment or individual that can catch on the following periodic maintenance charts, the services related to emission control are the maintenance services related to perform these particular services. These controls not only function to ensure cleaner air, but...
Owners Manual
Page 46
Spark plugs are routed properly before changing to specification. Also, if the reach is too short, carbon will cause a spark plug to a light tan color for a snowmobile that is the distance from the spark plug gasket seat to use a spark plug with the engine. 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. For example, a very white center electrode porcelain color could...
Spark plugs are routed properly before changing to specification. Also, if the reach is too short, carbon will cause a spark plug to a light tan color for a snowmobile that is the distance from the spark plug gasket seat to use a spark plug with the engine. 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. For example, a very white center electrode porcelain color could...
Owners Manual
Page 50
... the headlight unit bolts, and then tighten them to have a Yamaha dealer make sure that there is less air as altitude increases. TIP After riding the snowmobile, make these adjustments. Expect acceleration and top speed to be reduced at high altitude makes the air/fuel ratio too rich, which require very sophisticated adjustment. NOTICE: The drive chain gears and V-belt clutch should...
... the headlight unit bolts, and then tighten them to have a Yamaha dealer make sure that there is less air as altitude increases. TIP After riding the snowmobile, make these adjustments. Expect acceleration and top speed to be reduced at high altitude makes the air/fuel ratio too rich, which require very sophisticated adjustment. NOTICE: The drive chain gears and V-belt clutch should...
Owners Manual
Page 55
...: Hard water or salt water is a cooling system leak. Check the coolant level in the cooling system, or if there is harmful to the detent. Install the right side cover and the shroud. Consult a Yamaha dealer. 1. Tap water can cause overheating and severe engine damage. Periodic maintenance and adjustment When the engine has cooled, place a thick rag or towel over the coolant reservoir cap, and slowly...
...: Hard water or salt water is a cooling system leak. Check the coolant level in the cooling system, or if there is harmful to the detent. Install the right side cover and the shroud. Consult a Yamaha dealer. 1. Tap water can cause overheating and severe engine damage. Periodic maintenance and adjustment When the engine has cooled, place a thick rag or towel over the coolant reservoir cap, and slowly...
Owners Manual
Page 70
Oil tank breather hose clamp 2. Cylinder head breather hose 2. Main fuse 2. Oil tank breather hose 1. 2. 3. 4. 5. 6. Joint clamp bolt 5. "HEAD" (headlight) fuse "SIG" (signal) fuse "DC TERM" (auxiliary DC jack) fuse "C/W" (carburetor warmer) fuse "IGN" (ignition) fuse Spare fuse 6. Periodic maintenance and adjustment 7. Fastener 4. 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. Disconnect the negative battery lead. 64 Loosen the joint ...
Oil tank breather hose clamp 2. Cylinder head breather hose 2. Main fuse 2. Oil tank breather hose 1. 2. 3. 4. 5. 6. Joint clamp bolt 5. "HEAD" (headlight) fuse "SIG" (signal) fuse "DC TERM" (auxiliary DC jack) fuse "C/W" (carburetor warmer) fuse "IGN" (ignition) fuse Spare fuse 6. Periodic maintenance and adjustment 7. Fastener 4. 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. Disconnect the negative battery lead. 64 Loosen the joint ...
Owners Manual
Page 71
... a Yamaha dealer to insert the projections on the headlight unit stay into the slots on the bottom of the headlight unit. 11. Headlight unit bolt tightening torque: 3 Nm (0.3 m·kgf, 2.2 ft·lbf) 65 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...
... a Yamaha dealer to insert the projections on the headlight unit stay into the slots on the bottom of the headlight unit. 11. Headlight unit bolt tightening torque: 3 Nm (0.3 m·kgf, 2.2 ft·lbf) 65 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
... damaged gasket: Replace gasket. ↓ • Worn or damaged piston and cylinder: Ask a Yamaha dealer to the connecting lead terminals. EWS00570 WARNING G G Connect the jumper cables only to inspect. Troubleshooting ESU12963 Engine turns over but does not start 1. 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...
... damaged gasket: Replace gasket. ↓ • Worn or damaged piston and cylinder: Ask a Yamaha dealer to the connecting lead terminals. EWS00570 WARNING G G Connect the jumper cables only to inspect. Troubleshooting ESU12963 Engine turns over but does not start 1. 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...
Owners Manual
Page 74
.... Incorrect V-belt clutch settings for altitude or temperature: Ask a Yamaha dealer to inspect. Malfunctioning T.O.R.S.: See "Engine turns over several times with the ignition off to inspect. Engine overheats G G Electric starter does not operate or operates slowly G Engine stop switch is flashing: Warm the engine up. Ask a Yamaha dealer to inspect. G Faulty spark plugs: Replace the spark plugs. Clogged fuel system: See "Engine turns over but does not start -Fuel system" above . Leaking coolant: Ask a Yamaha dealer to...
.... Incorrect V-belt clutch settings for altitude or temperature: Ask a Yamaha dealer to inspect. Malfunctioning T.O.R.S.: See "Engine turns over several times with the ignition off to inspect. Engine overheats G G Electric starter does not operate or operates slowly G Engine stop switch is flashing: Warm the engine up. Ask a Yamaha dealer to inspect. G Faulty spark plugs: Replace the spark plugs. Clogged fuel system: See "Engine turns over but does not start -Fuel system" above . Leaking coolant: Ask a Yamaha dealer to...
Owners Manual
Page 76
... Engine Fogging Oil, or an equivalent fogging oil, to inhibit corrosion in the following areas: seals (of the engine is running. Storage ESU12413 Long-term storage requires some preventive procedures to loosen mud, grease, and grime. If the windshield is scratched, 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. Use Yamaha Mud...
... Engine Fogging Oil, or an equivalent fogging oil, to inhibit corrosion in the following areas: seals (of the engine is running. Storage ESU12413 Long-term storage requires some preventive procedures to loosen mud, grease, and grime. If the windshield is scratched, 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. Use Yamaha Mud...
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
... to normal wear or routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track. All Yamaha snowmobile clutch components are warranted against abnormal wear for a term of one (1) year from the date of purchase, plus a special early-season extension (if applicable). Parts used in warranty repairs will , free of charge, repair or replace, at the time of sale with all apparent defects...
... to normal wear or routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track. All Yamaha snowmobile clutch components are warranted against abnormal wear for a term of one (1) year from the date of purchase, plus a special early-season extension (if applicable). Parts used in warranty repairs will , free of charge, repair or replace, at the time of sale with all apparent defects...
Owners Manual
Page 83
... Yamaha Motor Corporation, U.S.A., for his setup, service and warranty repair work. WARRANTY DEPARTMENT P.O. YAMAHA MOTOR CORPORATION, U.S.A. What responsibility does my dealer have under this warranty. Whom should move after you . by sending a postcard listing your new address by the selling dealer at any later date. 3. If you must take it is in accordance with federal law. Explain the operation, maintenance, and warranty...
... Yamaha Motor Corporation, U.S.A., for his setup, service and warranty repair work. WARRANTY DEPARTMENT P.O. YAMAHA MOTOR CORPORATION, U.S.A. What responsibility does my dealer have under this warranty. Whom should move after you . by sending a postcard listing your new address by the selling dealer at any later date. 3. If you must take it is in accordance with federal law. Explain the operation, maintenance, and warranty...
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...