Yamaha RS90K Owner's Manual
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Yamaha RS90K Owner's Manual

Yamaha RS90K Owner's Manual

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SNOWMOBILE
OWNER'S MANUAL
RS90K
RS90MK
RS90RK
RSG90K
LIT-12628-02-38
8ES-28199-10

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Summary of Contents for Yamaha RS90K

  • Page 1 SNOWMOBILE OWNER’S MANUAL RS90K RS90MK RS90RK RSG90K LIT-12628-02-38 8ES-28199-10...
  • Page 3 Record the frame number, engine number (Primary ID), and key number in the spaces provided for assistance when ordering spare parts from a Yamaha dealer. 1 The frame number is the seventeen-digit number stamped on the frame of the snowmobile. (See fig.
  • Page 4 ESU00011 I NTRODUCTION Congratulations on your purchase of a Yamaha snowmo- bile. This model is the result of Yamaha’s vast experience in the production of fine sporting and touring snowmo- biles. It represents the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields.
  • Page 5 PLEASE READ AND UNDERSTAND THIS MANUAL COMPLETELY BEFORE OPERATING THE SNOWMO- BILE. NOTE: Yamaha continually seeks advancements in product design and quality. Therefore, while this manual con- tains the most current product information available at the time of printing, there may be minor discrepan- cies between your snowmobile and this manual.

  • Page 6: Table Of Contents

    YAMAHA MOTOR Carburetor coolant shut-off CORPORATION, U.S.A. lever..........5-11 SNOWMOBILE LIMITED Storage compartment ....5-11 WARRANTY ........1-1 PRE-OPERATION CHECKS....6-1 YAMAHA EXTENDED SERVICE Fuel ..........6-1 (Y.E.S.) ..........1-4 Engine oil.........6-2 Engine oil level ........6-3 Coolant ..........6-4 LOCATION OF THE Throttle lever ........6-5 IMPORTANT LABELS .......2-1 Throttle override system (T.O.R.S.) ........6-5...
  • Page 7 Operation on surfaces other than Chassis..........11-2 snow or ice ........7-6 Electric...........11-3 Maximizing drive track life ....7-7 Strap ..........7-8 WIRING DIAGRAM ......12-1 Driving ..........7-9 Stopping the engine.......7-10 Transporting ........7-11 PERIODIC MAINTENANCE ....8-1 Periodic maintenance chart .....8-1 Tool kit ..........8-4 Spark plug inspection ......8-4 Engine idle speed adjustment ..8-6 Throttle cable adjustment ....8-6 Carburetor adjustment.....8-7...

  • Page 8: Yamaha Motor Corporation, U.s.a. Snowmobile Limited Warranty

    ESU00004 Y AMAHA MOTOR CORPORATION, U.S.A. SNOWMOBILE LIMITED WARRANTY CW-01E...
  • Page 9 CW-02E...
  • Page 10 CW-03E...

  • Page 11: Yamaha Extended Service (Y.e.s.)

    ESU04280 YAMAHA EXTENDED SERVICE (Y.E.S.) CW-06E...

  • Page 12: Location Of The Important Labels

    ESU04050 L OCATION OF THE IMPORTANT LABELS Please read the following labels carefully before operat- ing this snowmobile. NOTE: Maintain or replace safety and instruction labels, as nec- essary. 1 RS90/RS90M 1 RS90R/RSG90...
  • Page 13 4 RS90M 5 RS90M 6 RSG90 7 RSG90 8 RS90M/RSG90...
  • Page 14 NOTE: The following suspension adjustment charts are included with the Owner’s Manual. RS90/RS90M/RS90R...

  • Page 15: Safety Information

    1. Read the Owner’s Manual and all labels before oper- ating this snowmobile. Become familiar with all of the operating controls and their function. Consult a Yamaha dealer about any control or function you do not understand. 2. This snowmobile was not manufactured for use on public streets, roads, or highways.
  • Page 16 7. Do not allow anyone to stand behind the snowmobile when starting, inspecting, or adjusting the snowmo- bile. A broken track, track fittings, or debris thrown by the track could be dangerous to the operator or bystanders. 8. Handle fuel with care; it is HIGHLY FLAMMABLE. Never add fuel when the engine is running or hot.
  • Page 17 Fuel may leak out from the fuel breather hose. 2. Modifications made to the snowmobile not approved by Yamaha, or the removal of original equipment may render your snowmobile unsafe for use that may cause severe personal injury. Modifications may also make the snowmobile illegal to use.

  • Page 18: Description

    ESU00012 D ESCRIPTION 1 Windshield 2 Steering handlebar 3 Seat 4 Frame 5 Slide rail suspension 6 Drive track 7 Skis 8 Headlights 9 Shroud 0 Storage compartment RS90/RS90R RS90M RSG90...
  • Page 19 A Tail/brake lights B Snow flap C Brake lever D Parking brake lever E Grip warmer adjustment switch F Headlight beam switch G Strap (RS90M) H Engine stop switch I Thumb warmer adjustment switch J Throttle lever K Shift lever (RS90R/RSG90) L Shroud latch M Main switch...

  • Page 20: Control Functions

    ESU00013 C ONTROL FUNCTIONS ESU00362 Main switch The main switch controls the following items. 1 “OFF” The ignition circuit is switched off. The key can be removed only in this position. 2 “ON” The ignition circuit is switched on. 3 “START” The starting circuit is switched on.

  • Page 21: Starter Lever (Choke)

    ESU00201 Starter lever (choke) Use the starter lever (choke) when starting and warming up a cold engine. 1 Starter lever (choke) 2 When starting a cold engine. 3 Warming up 4 When the engine is warm. NOTE: Refer the “Starting the engine” section for proper opera- tion.

  • Page 22: Throttle Override System (T.o.r.s.)

    ESU04151 Throttle override system (T.O.R.S.) If the carburetor or throttle cable should malfunction dur- ing operation, the T.O.R.S. will operate when the throttle lever is released. The T.O.R.S. is designed to interrupt the ignition and keep the engine speed between 2,800 and 3,000 r/min if the carburetor fails to return to idle when the lever is released.

  • Page 23: Speedometer Unit

    ESU04160 Speedometer unit The speedometer unit is equipped with the following: a digital speedometer (which shows riding speed) an odometer (which shows the total distance trav- eled) a tripmeter (which shows the distance traveled since it was last set to zero) warning indicators (which show self-diagnosis, cool- ant temperature, fuel level, and oil level warnings) a fuel meter (which shows the fuel remaining in the...

  • Page 24: Fuel Meter And Grip/Thumb Warmer Level Indicator

    ESU03821 Fuel meter and grip/thumb warmer level indica- The fuel meter and grip/thumb warmer level indicator have eight segments 1 which show the amount of fuel remaining in the fuel tank, the grip warmer level, or the thumb warmer level. Fuel meter As the fuel level decreases in the fuel tank, the segments disappear until the level goes down to the last segment...

  • Page 25: Fuel Level Warning Indicator

    The fuel level warning indicator 1, warning light 2, and all segments of the fuel meter 3 warn the rider of the above problems by flashing continuously. When this occurs, have a Yamaha dealer inspect the snowmobile as soon as possible. ESU00377...

  • Page 26: Coolant Temperature Warning Indicator

    If the self-diagnosis warning indicator, warning light, and an error code flash after the engine has been restarted, note the error code, and then have a Yamaha dealer inspect the snowmobile as soon as possible.

  • Page 27: Engine Stop Switch

    ESU00031 Engine stop switch The engine stop switch 1 is used to stop the engine in an emergency. Simply push 2 the stop switch to stop the engine. To start the engine, pull 3 the stop switch and proceed with starting the engine. (See page 7-1 for more details.) During the first few rides, practice using the stop switch so that you can react quickly in an emergency.

  • Page 28: Parking Brake Lever

    ESU00035 Parking brake lever When parking the snowmobile or starting the engine, apply the parking brake by moving the brake lever 1 to the left. To release the parking brake, move the parking brake lever 1 to the right. È To apply the parking brake É...

  • Page 29: Headlight Beam Switch

    ESU00039 Headlight beam switch Push the headlight beam switch to change the headlight beam to high or low. 1 Headlight beam switch 2 Push 3 High beam 4 Low beam ESU00481 Shroud latches To open the shroud, unhook the shroud latches, and then slowly raise the shroud forward until it stops.

  • Page 30: V-Belt Holders

    ESU00053 V-belt holders Keep a spare V-belt for emergency use by placing it into the V-belt holders provided. CAUTION : Make sure that the V-belt is installed securely in the holders. ESU04080 Carburetor coolant shut-off lever For RS90M The carburetor coolant shut-off lever controls the flow of coolant through the carburetor.

  • Page 31: Pre-Operation Checks

    ESU00072 P RE-OPERATION CHECKS NOTE: Pre-operation checks should be made each time the snowmobile is used. WARNING The engine and muffler will be very hot after the engine has been run. Avoid touching the engine and muffler while they are still hot with any part of your body or clothing during inspection or repair.

  • Page 32: Engine Oil

    5% of ethanol can be used, although richer jetting may be required to prevent engine dam- age. Consult a Yamaha dealer. Gasohol contain- ing methanol is not recommended. Make sure that snow or ice does not enter the fuel tank when refueling.

  • Page 33: Engine Oil Level

    ESU03441 Engine oil level The engine oil level should be checked before each use. CAUTION : Do not run the engine with too much or not enough oil in the oil tank. Oil could flow into the air filter case and the engine could be damaged.

  • Page 34: Coolant

    6. Insert the oil level gauge/dipstick into the oil filler hole, and then tighten it securely. 7. Connect the oil level gauge coupler. ESU00086 Coolant Check the coolant level in the coolant reservoir when the engine is cold. If the coolant level is below the “COLD LEVEL”...

  • Page 35: Throttle Lever

    The T.O.R.S. will operate and the engine should run between 2,800 and 3,000 r/min. WARNING If the engine does not run between 2,800 and 3,000 r/min, stop the engine by turning the main switch to the “OFF” position and consult a Yamaha dealer.

  • Page 36: Brake

    Do not operate the snowmobile if you find any problems in the brake system. You could lose braking ability, which could lead to an accident. Ask a Yamaha dealer to inspect and repair the brake system. CAUTION : Make sure that the brake lever end does not project out over the handlebar end.

  • Page 37: Brake Fluid Leakage

    Apply the brake for a few minutes. Check to see if any brake fluid leaks out from the brake hose joints or the master cylinder. WARNING If brake fluid leakage is found, ask a Yamaha dealer for immediate repairs. CAUTION : Brake fluid may deteriorate painted surfaces or plas- tic parts.

  • Page 38: Drive Track

    ESU00097 Drive track Check the drive track for deflection, wear, or damage. Adjust or replace if necessary. (See pages 8-29–8-31 for more details.) WARNING Do not operate the snowmobile if you find damage to the drive track, or if it has been maladjusted. Drive track damage or failure could result in loss of brak- ing ability and snowmobile control, which could cause an accident.

  • Page 39: Slide Runners

    ESU00982 Slide runners Check the slide runners for wear and damage. If the slide runners reach the wear limit, they should be replaced. 1 Slide runners a Wear limit Wear limit height: For RS90/RS90M/RS90R 10.5 mm (0.41 in) For RSG90 10.0 mm (0.39 in) È...

  • Page 40: Steering System

    Check the handlebar for excessive free play: 1. Push the handlebar up and down and back and forth. 2. Turn the handlebar slightly to the right and left. If excessive free play is noticed, consult a Yamaha dealer. ESU00378 Lights Check the lights.

  • Page 41: Fittings And Fasteners

    ESU00110 Fittings and fasteners Check the tightness of the fittings and fasteners. Tighten in proper sequence and torque if necessary. ESU00345 Tool kit and recommended equipment It is good practice to carry the tool kit, spare parts, and other necessary equipment with you while riding the snowmobile so that minor repairs can be done if neces- sary.

  • Page 42: Operation

    ESU00112 O PERATION ESU00366 Starting the engine WARNING Be sure to check the “SAFETY INFORMATION” section carefully before starting the engine. Make sure that the parking brake is applied. NOTE: Make sure that the engine stop switch is in the on posi- tion.

  • Page 43: Break-In

    CAUTION : After 800 km (500 mi) of operation, the engine oil must be changed and the oil filter cartridge replaced. If any engine trouble should occur during the engine break-in period, immediately have a Yamaha dealer check the snowmobile.

  • Page 44: Riding Your Snowmobile

    totally familiar with the snowmobile’s han- ESU01272 Riding your snowmobile dling and performance characteristics. Set the parking brake and follow the Getting to know your snowmobile instructions on pages 7-1–7-2 to start the A snowmobile is a rider active vehicle, and engine.

  • Page 45: Turning

    Turning Riding uphill For most snow surfaces, “body English” is You should practice first on gentle slopes. the key to turning. Try more difficult climbs only after you have As you approach a curve, slow down and developed your skill. As you approach a begin to turn the handlebar in the desired hill, accelerate before you start the climb, direction.

  • Page 46: Riding Downhill

    Riding downhill downhill leg on the seat and the foot of your uphill leg on the running board. This position will make it easier for you to shift your body weight as needed. Snow and ice are slippery, so be prepared for the possibility that your snowmobile could begin to slip sideways on the slope.

  • Page 47: Hard-Packed Snow

    Hard-packed snow WARNING It can be more difficult to negotiate on Drive track damage or failure could hard-packed snow as both the skis and result in loss of braking ability and drive track do not have as much traction as snowmobile control, which could cause when the snowmobile is operated on fresh an accident.

  • Page 48: Maximizing Drive Track Life

    Studs may catch on an object and pull out of the track, leaving tears and damage around the already weakened area. To minimize possible dam- age, consult your stud manufacturer for installation and stud pattern recommendations. Yamaha does not recommend track studding.

  • Page 49: Strap

    ESU00245 Strap For RS90M The strap 1 should be used only by experienced opera- tors to assist them when traverse (side-hill) riding. WARNING Improper use of the strap on the handlebar can result in severe injury or death. Use the strap only as an operator grip point when needed to shift weight uphill to maintain balance during traverse (side-hill) riding.

  • Page 50: Driving

    ESU00347 Driving WARNING Be sure to read the “SAFETY INFORMATION” and “Riding your snowmobile” sections carefully before operating the snowmobile. NOTE: Make sure that the engine is warmed up enough before riding. For RS90/RS90M 1. Release the parking brake by moving the parking brake lever to the right.

  • Page 51: Stopping The Engine

    CAUTION : Do not shift from “FWD” to “REV” or from “REV” to “FWD” while the snowmobile is moving. Otherwise, the drive system could be damaged. NOTE: The reverse buzzer beeps while the shift lever is in reverse. 2. Release the parking brake by moving the parking brake lever to the right.

  • Page 52: Transporting

    ESU00367 Transporting When transporting your snowmobile on a trailer or in a truck, observe the following recommendations to help protect it from damage: Make sure that the fuel level in the fuel tank is lower than the bottom of the carburetors. Otherwise, the vibration and bumps from the road surface could make it possible for fuel to flow through the carbure- tors into the cylinders.

  • Page 53: Periodic Maintenance

    ∗ Repair if necessary. system (T.O.R.S.) Check operation. Throttle lever 5-2, 6-5 ∗ Repair if necessary. Check for leakage. ∗ Exhaust system Tighten or replace gasket if necessary. ∗ It is recommended that these items be serviced by a Yamaha dealer.
  • Page 54 ∗ Adjust toe-out if necessary. Check for damage. Strap (RS90M) ∗ Replace if necessary. Check operation. Lights 6-9, 8-35 Replace bulbs if necessary. Check condition. ∗ Battery 8-36 Charge if necessary. ∗ It is recommended that these items be serviced by a Yamaha dealer.
  • Page 55 Tool kit and recom- Check for proper placement. 6-11 mended equipment ∗ It is recommended that these items be serviced by a Yamaha dealer. NOTE: Brake fluid replacement: 1. When disassembling the master cylinder or caliper cylinder, replace the brake fluid.

  • Page 56: Tool Kit

    NOTE: If you do not have a torque wrench available during a service operation requiring one, take your snowmobile to a Yamaha dealer to check the torque settings and adjust them if necessary. ESU00368 Spark plug inspection The spark plug is an important engine component and is easy to inspect.
  • Page 57 Spark plugs are produced in several different thread lengths. The thread length or reach is the distance from the spark plug gasket seat to the end of the threaded portion. If the reach is too long, overheating and engine damage may result. If the reach is too short, spark plug fouling and poor performance may result.

  • Page 58: Engine Idle Speed Adjustment

    ESU00370 Engine idle speed adjustment CAUTION : Be sure to have a Yamaha dealer make this adjustment. Make sure that the throttle lever moves smoothly. Make sure that the carburetor is synchronized first. 1. Start the engine and warm it up.

  • Page 59: Carburetor Adjustment

    ESU04190 Carburetor adjustment CAUTION : Be sure to have a Yamaha dealer make this adjustment. Make sure that the air filter case is installed dur- ing running to prevent engine damage. Under some operating conditions the carburetor setting may have to be changed due to air temperature changes, elevation changes, use of alcohol oxygenated fuels, etc.,...
  • Page 60 Main jet replacement Replace the main jet according to the setting chart which is available at a Yamaha dealer. WARNING Never remove the drain plug or the float chamber while the engine is hot. Fuel will flow out from the float chamber which could ignite and cause injury.

  • Page 61: High Altitude Adjustments

    If you plan to operate your snowmobile at an altitude different from the area where you bought it, be sure to consult a Yamaha dealer. They can tell you if there are any changes necessary for the altitude where you plan to ride.

  • Page 62: Changing The Engine Oil

    ESU04200 Changing the engine oil It is recommended to have a Yamaha dealer change the engine oil. WARNING Engine oil is extremely hot immediately after the engine is turned off. Coming into contact with or get- ting any engine oil on your clothes could result in burns.
  • Page 63 7. Remove the oil filter cartridge 9 with an oil filter wrench. NOTE: An oil filter wrench is available at a Yamaha dealer. 8. Apply a thin coat of engine oil to the O-ring of the new oil filter cartridge.
  • Page 64 If oil is leaking or the oil level warning indicator comes on when the engine is running, immediately turn the engine off and have a Yamaha dealer check the snowmobile. Continuing to operate the engine under such conditions could cause severe engine damage.

  • Page 65: Cooling System

    The cooling system must be bled of air if the coolant reservoir becomes empty, if air can be seen in the cooling system, or if there is a cooling system leak. Consult a Yamaha dealer. CAUTION : Operating the engine with an improperly bled cool- ing system can cause overheating and severe engine damage.
  • Page 66 3. Fill the coolant reservoir with coolant to the “COLD LEVEL” mark. 4. Install the coolant reservoir cap. Check for any cool- ant leakage. NOTE: If you find any leaks, consult a Yamaha dealer. 8-14...

  • Page 67: V-Belt Replacement

    Adjust the V-belt position by removing or adding a spacer 1 on each adjusting bolt. Have a Yamaha dealer make this adjustment. CAUTION : As the V-belt wears, adjustment may be necessary. To ensure proper clutch performance, the V-belt...
  • Page 68 3. Pull 3 the V-belt up over the secondary fixed sheave. 4. Remove the V-belt from the secondary sheave assembly and primary sheave assembly. 5. Put the new V-belt back on the secondary sheave assembly only. Do not force the V-belt between the sheaves;...

  • Page 69: Checking The Drive Chain Housing Oil Level And The Drive Chain Tension

    8. Install the V-belt over the primary sheave assembly. 9. Rotate the secondary sliding sheave clockwise 6 and push 7 it so that it separates from the secondary fixed sheave. 10. Install the V-belt 8 between the secondary sliding and secondary fixed sheaves. 11.
  • Page 70 3. Remove the dipstick and check that the oil is between the upper and lower levels. If not, add oil to the upper level. 2 Upper level 3 Lower level Drive chain oil: GL-3 75W or 80W È For models without reverse transmissions (RS90/RS90M) É...

  • Page 71: Checking The Brake Pads

    ESU00174 Checking the brake pads Check the brake pads for wear. If the brake pads reach the wear limit, ask a Yamaha dealer to replace them. 1 Brake pad wear indicator Wear limit a: 1.5 mm (0.06 in) ESU00352 Checking the parking brake pads Check the parking brake pads for wear by measuring the thickness of the pads.

  • Page 72: Checking The Brake Fluid Level

    Water will significantly lower the boiling point of the fluid and may result in vapor lock. If the brake fluid level goes down, consult a Yamaha dealer. CAUTION : Brake fluid may deteriorate painted surfaces or plas- tic parts.
  • Page 73 ESU01911 Ski spring preload adjustment The spring preload can be adjusted by turning the spring preload adjuster 1. For RS90/RS90R/RSG90 CD-11E Standard Spring seat length* Increased ← → Decreased ← → Preload Harder Softer Maximum Minimum a Length 172.0 mm 162.0 mm 155.5 mm (6.77 in)
  • Page 74 Do not deform or damage the shock absorber in any way. Do not dispose of a worn or damaged shock absorber by yourself. Take the unit to a Yamaha dealer. ESU04210 Rear suspension spring preload adjustment...
  • Page 75 The spring preload can be adjusted by turning the spring preload adjuster 3 on the front and rear shock absorb- ers. For RS90/RS90R CD-17E Standard Spring seat length* Increased ← → Decreased ← → Preload Harder Softer Maximum Minimum È a Length (front) 123.5 mm 113.5 mm 103.5 mm...
  • Page 76 Preload Soft Hard Ì Standard (rear) WARNING Be sure to have a Yamaha dealer make this adjust- ment. This shock absorber contains highly pressurized nitrogen gas. It could explode by improper handling, causing injury, or property damage. Do not tamper with or attempt to open the shock absorber.
  • Page 77 Do not deform or damage the shock absorber in any way. Do not dispose of a worn or damaged shock absorber by yourself. Take the unit to a Yamaha dealer. 8-25...
  • Page 78 For RSG90 The total suspension spring rate and damping character- istics can be adjusted by changing the installed position of the shock absorber. WARNING Be sure to have a Yamaha dealer make this adjustment. CD-07E Installation position Spring rate and Soft...
  • Page 79 ESU04220 Control rod adjustment The weight transfer can be adjusted by turning the con- trol rod adjusting nut 1. 1. Loosen the locknut 2 while holding the control rod adjusting nut. 2. Turn the adjusting nut in direction a to increase weight transfer or direction b to decrease weight transfer.
  • Page 80 ESU04271 Anti-bottoming stopper adjustment For RS90/RS90R The spring force can be adjusted by changing the instal- lation location of the anti-bottoming stoppers. WARNING Be sure to have a Yamaha dealer make this adjust- ment. CD-24E Installation location Spring force Soft...

  • Page 81: Drive Track Adjustment

    ESU03531 Drive track adjustment WARNING A broken track, track fittings or debris thrown by the drive track could be dangerous to an operator or bystanders. Observe the following precautions: Do not allow anyone to stand behind the snow- mobile when the engine is running. When the rear of the snowmobile is raised to allow the drive track to spin, a suitable stand must be used to support the rear of the snowmo-...
  • Page 82 Drive track adjustment WARNING Be sure to have a Yamaha dealer make this adjustment. Support the snowmobile securely on a suitable stand before working underneath the snowmo- bile. Operate the engine in a well-ventilated area. 1. Lift the rear of the snowmobile onto a suitable stand to raise the drive track off the ground.

  • Page 83: Ski Alignment

    2. Check the following for ski alignment: a. Skis are facing forward. b. Ski toe-out (1 – 2) is within specification. Ski toe-out (1 – 2): 0–15 mm (0–0.59 in) 3. If the alignment is not correct, consult a Yamaha dealer. ESU03541 Handlebar adjustment 1.
  • Page 84 2. Loosen the handlebar bolts. 3. Move the handlebar up or down to adjust the handle- bar height to the desired position. È RS90/RS90R/RSG90 É RS90M 8-32...
  • Page 85 CAUTION : Make sure that the projection on the handlebar is not installed into the area a shown. 4. Tighten the handlebar bolts and install the handlebar cover. Handlebar bolt tightening torque: 14.5 Nm (1.45 m·kgf, 10.5 ft·lb) CAUTION : Make sure that the small gap b side of the handlebar holders faces forward c.

  • Page 86: Lubrication

    Apply a dab of grease onto the cable end only. Do not grease the throttle cable because it could become frozen, which could cause loss of control. 2 Front suspension 3 Rear suspension WARNING Be sure to have a Yamaha dealer lubricate the front and rear suspensions. 8-34...

  • Page 87: Headlight Bulb Replacement

    ESU00208 Headlight bulb replacement 1. Lift up the shroud. 2. Disconnect the headlight connector. 3. Remove the bulb holder cover. 4. Remove the bulb holder by depressing and turning it counterclockwise. 1 Bulb holder cover 5. Remove the bulb. WARNING Keep flammable products or your hands away from the hot bulb until it cools down.

  • Page 88: Battery

    To charge the battery Have a Yamaha dealer charge the battery as soon as possible if it seems to have discharged. Keep in mind that the battery tends to discharge more quickly if the snowmobile is equipped with electrical accessories.
  • Page 89 CAUTION : Be sure to connect the breather hoses securely when installing the air filter case. NOTE: If the fuse immediately blows again, ask a Yamaha dealer to inspect the snowmobile. 8-37...
  • Page 90 Specified fuses: 9Main fuse: 30 A 0“HEAD” (Headlight) fuse: 20 A A“SIG” (Signal) fuse: 10 A B“DC TERM” (Auxiliary DC jack) fuse: C“C/W” (Carburetor warmer) fuse: 20 A D“IGN” (Ignition) fuse: 15 A E Spare fuses (20 A, 10 A, 15 A, 3 A) F Spare main fuse 8-38...

  • Page 91: Troubleshooting

    Worn or damaged piston and cylinder No fuel in tank ... Supply fuel..Ask a Yamaha dealer to inspect. Clogged fuel line ... Clean fuel line. Clogged carburetor ... Clean carbure- B. Starting the engine with a dis- tor.
  • Page 92 2. Open the shroud. 5. Connect the other end of the red (+) jumper cable to the positive (+) terminal of the booster battery. 6. Connect the black (-) jumper cable to the negative (-) terminal of the booster battery. 7.
  • Page 93 4. Improper fuel flow ... See A.1 above. NOTE: 5. Incorrect V-belt clutch settings for alti- Make sure that both the red (+) lead and tude or conditions ... Ask a Yamaha the black (-) lead are seated securely in the dealer to inspect. lead holders.
  • Page 94 J. Engine does not upshift or down- shift properly or engages harshly 1. Worn or damaged V-belt ... Replace the V-belt or ask a Yamaha dealer to inspect. 2. Incorrect V-belt clutch settings for alti- tude or conditions ... Ask a Yamaha dealer to inspect.

  • Page 95: Storage

    In areas where oxygenated fuel (gaso- WARNING hol) is used, completely drain the fuel Never smoke around the battery system. Ask a Yamaha dealer if further while it is being charged. Sparks information is needed. may ignite the hydrogen gas created by the battery.
  • Page 96 Do not charge the battery quickly. that you have your snowmobile checked Charge the battery for 10 hours at and tuned by a Yamaha dealer. The dealer 1.8 amperes. has the experience and training to help you get the maximum performance and use of 7.

  • Page 97: Specifications

    ESU00228 S PECIFICATIONS 1 1 - ESU00229 Dimensions CS-01E RS90/RS90M/RS90R/RSG90 Overall length 2,755 mm (108.5 in): RS90/RS90R 3,185 mm (125.4 in): RS90M 3,000 mm (118.1 in): RSG90 Overall width 1,225 mm ( 48.2 in): RS90/RS90R/ RSG90 1,165 mm ( 45.9 in): RS90M Overall height 1,215 mm ( 47.8 in) Dry weight...
  • Page 98 ESU00231 Chassis CS-03E RS90/RS90M/RS90R/RSG90 Drive track and suspension: Track Molded rubber, fiber glass rod reinforced Width 381 mm (15.0 in) Track deflection 30–35 mm (1.18–1.38 in)/ 100 N (10 kg, 22 lb): RS90/RS90M/ RS90R 25–30 mm (0.98–1.18 in)/ 100 N (10 kg, 22 lb): RSG90 Length on ground 723 mm (28.5 in): RS90/RS90R 759 mm (29.9 in): RS90M...
  • Page 99 RS90/RS90M/RS90R/RSG90 Brake: Type Hydraulic disc type (ventilated disc) Operation Handle lever, left hand operated Throttle: Operation Handle lever, right hand operated ESU00232 Electric CS-04E RS90/RS90M/RS90R/RSG90 Ignition system Spark plug Type · R · CR8E (NGK) 0.7–0.8 mm (0.028–0.031 in) Battery Capacity YTX20L-BS 12 V 18 A·h Maximum charge rate...
  • Page 100 12-1...
  • Page 101 12-2...
  • Page 102 YAMAHA MOTOR CO., LTD. PRINTED IN JAPAN PRINTED ON RECYCLED PAPER 2004.04 - 2.8×1 CR...

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