Owners Manual
Page 5
... control system ...36 General maintenance and lubrication chart ...38 Tool kit ...40 Removing and installing the shroud and covers ...40 Checking the spark plugs ...42 Adjusting the engine idling speed ...43 Adjusting the throttle cable free play ...43 Checking the throttle override system (T.O.R.S.) ...44 Checking the air filter ...44 Carburetors ...46 High-altitude settings ...46 Valve clearance ...46 Engine oil and oil filter cartridge ...47 Cooling system ...50 V-belt ...52 Drive chain...
... control system ...36 General maintenance and lubrication chart ...38 Tool kit ...40 Removing and installing the shroud and covers ...40 Checking the spark plugs ...42 Adjusting the engine idling speed ...43 Adjusting the throttle cable free play ...43 Checking the throttle override system (T.O.R.S.) ...44 Checking the air filter ...44 Carburetors ...46 High-altitude settings ...46 Valve clearance ...46 Engine oil and oil filter cartridge ...47 Cooling system ...50 V-belt ...52 Drive chain...
Owners Manual
Page 7
... operating controls and their function. G Never add fuel when the engine is designed to stand behind the snowmobile when starting the engine. This snowmobile is running . Do not allow anyone to carry the OPERATOR ONLY. Consult a Yamaha dealer about any of the following for proper operation every time before starting the engine. Become familiar with another vehicle. Check the throttle, brake, and steering for...
... operating controls and their function. G Never add fuel when the engine is designed to stand behind the snowmobile when starting the engine. This snowmobile is running . Do not allow anyone to carry the OPERATOR ONLY. Consult a Yamaha dealer about any of the following for proper operation every time before starting the engine. Become familiar with another vehicle. Check the throttle, brake, and steering for...
Owners Manual
Page 14
... 1. Parking brake lever 3. Throttle lever 8. Main switch 10. Oil level warning indicator 20. Thumb warmer indicator 24. Fuel meter and grip/thumb warmer level indicator 25. Design and specifications are subjected to change without notice. 8 Headlight beam switch 5. Thumb warmer adjustment switch 7. Auxiliary DC jack (RS90GT / RS90GTA / RS90LTGT) 11. Starter (choke) lever 12. High beam indicator light 15. Coolant temperature warning indicator 18. Select/reset button 23. Engine...
... 1. Parking brake lever 3. Throttle lever 8. Main switch 10. Oil level warning indicator 20. Thumb warmer indicator 24. Fuel meter and grip/thumb warmer level indicator 25. Design and specifications are subjected to change without notice. 8 Headlight beam switch 5. Thumb warmer adjustment switch 7. Auxiliary DC jack (RS90GT / RS90GTA / RS90LTGT) 11. Starter (choke) lever 12. High beam indicator light 15. Coolant temperature warning indicator 18. Select/reset button 23. Engine...
Owners Manual
Page 16
... the specified spark plug and spark plug cap. is released. (See page 74 for the clutch engagement speed.) 1. Throttle lever EWS00030 Idling / starting the engine. (See page 26.) ESU10321 Run Run Engine overheating prevention system This model is equipped with a system, which prevents overheating when the engine is released. When the engine has been idling for proper operation before restarting the engine. Throttle position sensor (throttle valve closed position) 2. The T.O.R.S. will not work properly. 10 ESU10331 Throttle override system...
... the specified spark plug and spark plug cap. is released. (See page 74 for the clutch engagement speed.) 1. Throttle lever EWS00030 Idling / starting the engine. (See page 26.) ESU10321 Run Run Engine overheating prevention system This model is equipped with a system, which prevents overheating when the engine is released. When the engine has been idling for proper operation before restarting the engine. Throttle position sensor (throttle valve closed position) 2. The T.O.R.S. will not work properly. 10 ESU10331 Throttle override system...
Owners Manual
Page 17
... is disconnected or is started, the tachometer makes one sweep, and the low coolant temperature indicator light, the warning light, and all segments of the throttle position sensor, speedometer assembly, and speed sensor, and will flash in the fuel tank) G a grip/thumb warmer level indicator (which shows the grip warmer level or the thumb warmer level) After the engine is malfunctioning. 11 Control functions Running 1.
... is disconnected or is started, the tachometer makes one sweep, and the low coolant temperature indicator light, the warning light, and all segments of the throttle position sensor, speedometer assembly, and speed sensor, and will flash in the fuel tank) G a grip/thumb warmer level indicator (which shows the grip warmer level or the thumb warmer level) After the engine is malfunctioning. 11 Control functions Running 1.
Owners Manual
Page 22
... auxiliary DC jack is not running. Headlight beam switch "LIGHTS" 2. High beam "HI" 3. To lower the temperature, press the switch to "LO". Control functions 1. Grip/thumb warmer adjustment switch The grip warmer adjustment switch and the thumb warmer adjustment switch control the electrically heated handlebar grips and throttle lever respectively. 16 Grip warmer adjustment switch During the first few rides, practice using the stop switch" " 1. Start the engine. 2. To...
... auxiliary DC jack is not running. Headlight beam switch "LIGHTS" 2. High beam "HI" 3. To lower the temperature, press the switch to "LO". Control functions 1. Grip/thumb warmer adjustment switch The grip warmer adjustment switch and the thumb warmer adjustment switch control the electrically heated handlebar grips and throttle lever respectively. 16 Grip warmer adjustment switch During the first few rides, practice using the stop switch" " 1. Start the engine. 2. To...
Owners Manual
Page 32
... the drive guard mounts for damage. • Make sure that the drive guard is the owner's responsibility. ESU11080 Pre-operation check list ITEM Fuel CHECKS • Check fuel level. • Refuel if necessary. • Check fuel line for leakage. • Check oil level in addition to a thorough visual inspection, to the elements). PAGE 20 Engine oil 47 Coolant V-belt Drive guard 50 52 20 Brake 56 Air filter 44...
... the drive guard mounts for damage. • Make sure that the drive guard is the owner's responsibility. ESU11080 Pre-operation check list ITEM Fuel CHECKS • Check fuel level. • Refuel if necessary. • Check fuel line for leakage. • Check oil level in addition to a thorough visual inspection, to the elements). PAGE 20 Engine oil 47 Coolant V-belt Drive guard 50 52 20 Brake 56 Air filter 44...
Owners Manual
Page 35
... engine idling, release the parking brake. Become familiar with the snowmobile's handling and performance characteristics. Make sure that is essential to ride your snowmobile at maximum performance until you are the two basic factors of the throttle and brake, and master turning techniques in period, immediately have a Yamaha dealer check the snowmobile. Set the parking brake and follow the instructions on page 1. The V-belt clutch will start...
... engine idling, release the parking brake. Become familiar with the snowmobile's handling and performance characteristics. Make sure that is essential to ride your snowmobile at maximum performance until you are the two basic factors of the throttle and brake, and master turning techniques in period, immediately have a Yamaha dealer check the snowmobile. Set the parking brake and follow the instructions on page 1. The V-belt clutch will start...
Owners Manual
Page 37
... a slope EWS00250 WARNING Traversing slopes is to kneel with light pressure. EWS00240 Snow and ice are not recommended for a novice snowmobiler. As you wish to travel across the slope, lean your body to position your weight towards the uphill side. Restart the engine, release the parking brake, and descend the hill. Excessive braking will allow you to shift your body weight as needed...
... a slope EWS00250 WARNING Traversing slopes is to kneel with light pressure. EWS00240 Snow and ice are not recommended for a novice snowmobiler. As you wish to travel across the slope, lean your body to position your weight towards the uphill side. Restart the engine, release the parking brake, and descend the hill. Excessive braking will allow you to shift your body weight as needed...
Owners Manual
Page 42
... maintenance work, have a Yamaha dealer do it for the emission control system 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 Crankcase breather system Fuel filter Fuel line Idle speed • Check condition. • Adjust gap and clean. • Replace if necessary. • Check and adjust valve clearance when engine...
... maintenance work, have a Yamaha dealer do it for the emission control system 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 Crankcase breather system Fuel filter Fuel line Idle speed • Check condition. • Adjust gap and clean. • Replace if necessary. • Check and adjust valve clearance when engine...
Owners Manual
Page 48
... your body and clothing away from the spark plug gasket seat to the end of the threaded portion. Do not touch the hot muffler and engine during or immediately after operation. Specified spark plug: Manufacturer: NGK Model: CR8E Spark plugs are routed properly before changing to a Yamaha dealer for inspection and possible repairs. 1. Spark plug reach: 19.0 mm (0.75 in several different thread lengths. ESU11780 Checking the spark plugs The spark plug...
... your body and clothing away from the spark plug gasket seat to the end of the threaded portion. Do not touch the hot muffler and engine during or immediately after operation. Specified spark plug: Manufacturer: NGK Model: CR8E Spark plugs are routed properly before changing to a Yamaha dealer for inspection and possible repairs. 1. Spark plug reach: 19.0 mm (0.75 in several different thread lengths. ESU11780 Checking the spark plugs The spark plug...
Owners Manual
Page 52
... acceleration and top speed to avoid poor performance and rapid wear. Place the wire harness in improper air-fuel mixture and/or engine noise. ECS00430 12. Headlight unit bolt tightening torque: 3 Nm (0.3 m·kgf, 2.2 ft·lb) 13. ESU11940 CAUTION: The drive chain gears and V-belt clutch should be left side cover, and the shroud. ESU11950 Valve clearance The valve clearance changes with proper carburetion. Less air at higher altitude...
... acceleration and top speed to avoid poor performance and rapid wear. Place the wire harness in improper air-fuel mixture and/or engine noise. ECS00430 12. Headlight unit bolt tightening torque: 3 Nm (0.3 m·kgf, 2.2 ft·lb) 13. ESU11940 CAUTION: The drive chain gears and V-belt clutch should be left side cover, and the shroud. ESU11950 Valve clearance The valve clearance changes with proper carburetion. Less air at higher altitude...
Owners Manual
Page 56
... idle for several minutes, and then turn it for oil leakage. Install the bottom panel and the right lower cover. 20. Start the engine, warm it up for the checking procedure.) ECS00461 CAUTION: G G G When adding the engine oil, be careful not to fill above for several minutes while checking it off and have a Yamaha dealer check the snowmobile. In addition, the cooling...
... idle for several minutes, and then turn it for oil leakage. Install the bottom panel and the right lower cover. 20. Start the engine, warm it up for the checking procedure.) ECS00461 CAUTION: G G G When adding the engine oil, be careful not to fill above for several minutes while checking it off and have a Yamaha dealer check the snowmobile. In addition, the cooling...
Owners Manual
Page 72
... main fuse 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 66 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. Oil tank breather hose 6. 7. Periodic maintenance 5. Oil tank breather hose clamp 2. Disconnect the negative battery...
... main fuse 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 66 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. Oil tank breather hose 6. 7. Periodic maintenance 5. Oil tank breather hose clamp 2. Disconnect the negative battery...
Owners Manual
Page 74
...; Electrical system Poor spark or no spark • Spark plugs are wet: Remove carbon or wipe the spark plugs dry. Due to pull the lead covers back over but does not start the snowmobile only. in tank: Supply fuel. • Clogged fuel line: Clean fuel line. • Clogged carburetor: Clean carburetor. is not a suitable grounding point for repair. malfunction: Disconnect the throttle switch connectors and connect the wire harness...
...; Electrical system Poor spark or no spark • Spark plugs are wet: Remove carbon or wipe the spark plugs dry. Due to pull the lead covers back over but does not start the snowmobile only. in tank: Supply fuel. • Clogged fuel line: Clean fuel line. • Clogged carburetor: Clean carburetor. is not a suitable grounding point for repair. malfunction: Disconnect the throttle switch connectors and connect the wire harness...
Owners Manual
Page 76
... spark plugs: Clean or replace the spark plugs. Improper fuel flow: See "Engine turns over but does not start-Fuel system" above . G Faulty spark plugs: Replace the spark plugs. Malfunctioning T.O.R.S.: See "Engine turns over but does not start the engine. Insufficient coolant: Add coolant. Faulty wire connections: Check connections or ask a Yamaha dealer to jump start -Electrical system" above . "Hydrostatic lock" occurs when fuel has filled the cylinders when the vehicle has been transported: Remove the spark plugs and turn the engine over...
... spark plugs: Clean or replace the spark plugs. Improper fuel flow: See "Engine turns over but does not start-Fuel system" above . G Faulty spark plugs: Replace the spark plugs. Malfunctioning T.O.R.S.: See "Engine turns over but does not start the engine. Insufficient coolant: Add coolant. Faulty wire connections: Check connections or ask a Yamaha dealer to jump start -Electrical system" above . "Hydrostatic lock" occurs when fuel has filled the cylinders when the vehicle has been transported: Remove the spark plugs and turn the engine over...
Owners Manual
Page 80
...r/min RS90R 3300-3700 r/min Shift speed [Subject to change according to elevation settings. Specifications ESU12462 Chassis: Drive track: Material: Molded rubber, fiberglass-rod reinforced Type: Internal drive type Width: 381 mm (15.0 in) ...Rear suspension: Type: Slide rail suspension Track sprocket wheel: Material: Polyethylene Number of teeth: 9 Transmission: Clutch type: Automatic centrifugal engagement Ratio range: 3.80-1.00 :1 Sheave distance: 267.0-270.0 mm (10.51-10.63 in) Sheave offset: 13.5-16.5 mm (0.53-0.65 in ) Idling speed: 1300-1500 r/min Engine oil: Recommended grade: API service...
...r/min RS90R 3300-3700 r/min Shift speed [Subject to change according to elevation settings. Specifications ESU12462 Chassis: Drive track: Material: Molded rubber, fiberglass-rod reinforced Type: Internal drive type Width: 381 mm (15.0 in) ...Rear suspension: Type: Slide rail suspension Track sprocket wheel: Material: Polyethylene Number of teeth: 9 Transmission: Clutch type: Automatic centrifugal engagement Ratio range: 3.80-1.00 :1 Sheave distance: 267.0-270.0 mm (10.51-10.63 in) Sheave offset: 13.5-16.5 mm (0.53-0.65 in ) Idling speed: 1300-1500 r/min Engine oil: Recommended grade: API service...
Owners Manual
Page 83
... in material or workmanship which would cause it is imperative that the vehicle is free from the original purchase date 77 An inspection and registration fee will be warranted for the balance of time stated herein, subject to normal wear or routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track. Give notice to original parts.
... in material or workmanship which would cause it is imperative that the vehicle is free from the original purchase date 77 An inspection and registration fee will be warranted for the balance of time stated herein, subject to normal wear or routine maintenance including oil, spark plugs, clutch drive belts, slide runners, and track. Give notice to original parts.
Owners Manual
Page 85
... United States. If a question or problem arises regarding warranty, first contact the owner of purchase. Since all first purchasers against the possibility of a motor vehicle to answer almost any later date. 3. has an up-to-date registration record in the best position to contact Yamaha Motor Corporation, U.S.A., for his setup, service and warranty repair work. Each Yamaha snowmobile dealer is expected to...
... United States. If a question or problem arises regarding warranty, first contact the owner of purchase. Since all first purchasers against the possibility of a motor vehicle to answer almost any later date. 3. has an up-to-date registration record in the best position to contact Yamaha Motor Corporation, U.S.A., for his setup, service and warranty repair work. Each Yamaha snowmobile dealer is expected to...
Owners Manual
Page 87
... Control rod, adjusting ...24 Coolant temperature warning indicator ...15 Cooling system...50 D Drive chain housing...55 Drive guard...20 Drive track and slide runners ...59 Drive track life, maximizing ...32 Driving ...33 E Engine idling speed, adjusting ...43 Engine oil and oil filter cartridge ...47 Engine overheating prevention system ...10 Engine stop switch ...15 F Fittings and fasteners...64 Fuel ...20 Fuel level warning indicator...14 Fuel meter and grip/ thumb warmer level indicator...13 Fuse, replacing...65 G General maintenance and...
... Control rod, adjusting ...24 Coolant temperature warning indicator ...15 Cooling system...50 D Drive chain housing...55 Drive guard...20 Drive track and slide runners ...59 Drive track life, maximizing ...32 Driving ...33 E Engine idling speed, adjusting ...43 Engine oil and oil filter cartridge ...47 Engine overheating prevention system ...10 Engine stop switch ...15 F Fittings and fasteners...64 Fuel ...20 Fuel level warning indicator...14 Fuel meter and grip/ thumb warmer level indicator...13 Fuse, replacing...65 G General maintenance and...