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Yamaha RS90NW Owner's Manual
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Yamaha RS90NW Owner's Manual

Yamaha RS90NW Owner's Manual

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SNOWMOBILE
OWNER'S MANUAL
RS90NW
RS90RW/RS90NRW
RS90MW/RS90MSW
RS90GTW
RSG90W/RSG90GTW
LIT-12628-02-55
8GG-28199-12

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Summary of Contents for Yamaha RS90NW

  • Page 1 SNOWMOBILE OWNER’S MANUAL RS90NW RS90RW/RS90NRW RS90MW/RS90MSW RS90GTW RSG90W/RSG90GTW LIT-12628-02-55 8GG-28199-12...
  • 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

    V-belt holders ........5-11 SNOWMOBILE LIMITED Carburetor coolant shut-off WARRANTY ........1-1 lever..........5-12 Rear suspension damping force remote adjustment dial ....5-12 YAMAHA EXTENDED SERVICE Storage compartment ....5-12 (Y.E.S.) ..........1-4 Rear carrier ........5-13 LOCATION OF THE PRE-OPERATION CHECKS....6-1 IMPORTANT LABELS .......2-1 Fuel ..........6-1 Engine oil.........6-2...
  • Page 7 E_8gg.book Page 2 Thursday, March 16, 2006 4:23 PM Riding uphill ........7-4 TROUBLESHOOTING .......9-1 Riding downhill ........7-5 Traversing a slope ......7-5 STORAGE ........10-1 Ice or icy surface ......7-5 Hard-packed snow......7-6 SPECIFICATIONS......11-1 Operation on surfaces other than Dimensions........11-1 snow or ice ........7-6 Engine ...........11-1 Maximizing drive track life ....7-7 Chassis..........11-2...

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

    WARRANTY PERIOD: WARRANTY TRANSFER: To transfer any remain- 1. All Yamaha snowmobiles shall be warranted for a ing warranty from the original purchaser to any subse- term of one (1) year from the date of purchase, plus quent purchaser, it is imperative that the machine be a special early-season extension (if applicable).
  • Page 9 Post Office Box 6555 specified in the Owner’s Manual? Cypress, California 90630 A. No. The warranty on a new Yamaha cannot be “voided” or “canceled.” However, if a particular failure is caused by operation or maintenance other than as shown in the Owner’s Manual, that failure may not be...

  • Page 10: Change Of Address

    If the dealer is not able to do so, he is expected to contact Yamaha Motor If you should move after you have purchased your new Corporation, U.S.A., for clarification or assistance.

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

    E_8gg.book Page 4 Thursday, March 16, 2006 4:23 PM ESU04280 YAMAHA EXTENDED SERVICE (Y.E.S.) CW-06E...

  • Page 12: Location Of The Important Labels

    E_8gg.book Page 1 Thursday, March 16, 2006 4:23 PM 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 RS90N/RS90M/RS90MS 8EK-77761-E0 1 RS90R/RS90NR/RS90GT/RSG90/RSG90GT 8FB-77761-E0...
  • Page 13 E_8gg.book Page 2 Thursday, March 16, 2006 4:23 PM CAUTION ATTENTION Severe engine damage Des dommages graves risquent de survenir par can result from oil loss if suite de fuites d’huile résultant d’un mauvais crankcase breather hoses branchement des tuyaux de reniflard du carter. are not installed correctly.
  • Page 14 E_8gg.book Page 3 Thursday, March 16, 2006 4:23 PM 8 RS90M/RS90MS/RSG90/RSG90GT 9 RS90MS Do not use the carrier Ne pas soulever la motoneige to lift the snowmobile. en tirant sur le porte-bagages. 8FS-24875-E0...
  • Page 15 E_8gg.book Page 4 Thursday, March 16, 2006 4:23 PM NOTE: The following suspension adjustment charts are included with the Owner’s Manual. RS90N/RS90NR/RS90M/RS90MS RS90R/RS90GT/RSG90/RSG90GT...

  • Page 16: 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 17 E_8gg.book Page 2 Thursday, March 16, 2006 4:23 PM 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.
  • Page 18 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 19: Description

    E_8gg.book Page 1 Thursday, March 16, 2006 4:23 PM ESU00012 D ESCRIPTION RS90N/RS90NR RS90R/RS90GT RS90M RS90MS RSG90/RSG90GT...
  • Page 20 E_8gg.book Page 2 Thursday, March 16, 2006 4:23 PM 1 Windshield M Shift lever 2 Steering handlebar (RS90R/RS90NR/RS90GT/RSG90/ 3 Seat RSG90GT) 4 Frame N Shroud latch 5 Storage compartment O Main switch 6 Rear carrier P Auxiliary DC jack 7 Slide rail suspension (RS90GT/RSG90GT) 8 Rear suspension damping force Q Starter lever...

  • Page 21: Control Functions

    E_8gg.book Page 1 Thursday, March 16, 2006 4:23 PM 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”...

  • Page 22: Starter Lever (Choke)

    E_8gg.book Page 2 Thursday, March 16, 2006 4:23 PM 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”...

  • Page 23: Throttle Override System (T.o.r.s.)

    E_8gg.book Page 3 Thursday, March 16, 2006 4:23 PM 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 24: Speedometer Unit

    E_8gg.book Page 4 Thursday, March 16, 2006 4:23 PM 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)

  • Page 25: Fuel Meter And Grip/Thumb Warmer Level Indicator

    E_8gg.book Page 5 Thursday, March 16, 2006 4:23 PM ESU03824 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.

  • Page 26: 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 27: 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 28: Engine Stop Switch

    E_8gg.book Page 8 Thursday, March 16, 2006 4:23 PM 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.

  • Page 29: Parking Brake Lever

    E_8gg.book Page 9 Thursday, March 16, 2006 4:23 PM 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.

  • Page 30: Headlight Beam Switch

    E_8gg.book Page 10 Thursday, March 16, 2006 4:23 PM 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 ESU04301 Auxiliary DC jack For RS90GT/RSG90GT The auxiliary DC jack is located in the front panel and...

  • Page 31: Shroud Latches

    E_8gg.book Page 11 Thursday, March 16, 2006 4:23 PM ESU00481 Shroud latches To open the shroud, unhook the shroud latches, and then slowly raise the shroud forward until it stops. When clos- ing the shroud, slowly lower it to its home position, and then hook the shroud latches.

  • Page 32: Carburetor Coolant Shut-Off Lever

    E_8gg.book Page 12 Thursday, March 16, 2006 4:23 PM ESU04080 Carburetor coolant shut-off lever For RS90M/RS90MS The carburetor coolant shut-off lever controls the flow of coolant through the carburetor. Make sure that the lever is in the “ON” position to allow the coolant to flow and warm the carburetor while the ambient temperature is below 0 °C (32 °F).

  • Page 33: Rear Carrier

    E_8gg.book Page 13 Thursday, March 16, 2006 4:23 PM ESU05020 Rear carrier For RS90MS The rear carrier is located at the rear of the snowmobile. 1 Rear carrier Maximum load limit: 10 kg (22 lb) WARNING Do not use the rear carrier to lift the snowmobile. The snowmobile could fall, which could result in severe injury or death.

  • Page 34: Pre-Operation Checks

    E_8gg.book Page 1 Thursday, March 16, 2006 4:23 PM 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 35: 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 36: Engine Oil Level

    E_8gg_Preop.fm Page 3 Monday, April 10, 2006 9:29 AM ESU03442 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 37: Coolant

    E_8gg.book Page 4 Thursday, March 16, 2006 4:23 PM 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.

  • Page 38: 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 39: 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 40: 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 41: Drive Track

    E_8gg.book Page 8 Thursday, March 16, 2006 4:23 PM ESU00097 Drive track Check the drive track for deflection, wear, or damage. Adjust or replace if necessary. (See pages 8-31–8-33 for more details.) WARNING Do not operate the snowmobile if you find damage to the drive track, or if it has been maladjusted.

  • Page 42: Slide Runners

    E_8gg.book Page 9 Thursday, March 16, 2006 4:23 PM 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: 10.5 mm (0.41 in) CAUTION : Ride on fresh snow frequently.

  • Page 43: 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 44: Fittings And Fasteners

    E_8gg.book Page 11 Thursday, March 16, 2006 4:23 PM 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 45: Operation

    E_8gg.book Page 1 Thursday, March 16, 2006 4:23 PM 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 46: 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 47: Riding Your Snowmobile

    E_8gg.book Page 3 Thursday, March 16, 2006 4:23 PM 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 48: Turning

    E_8gg.book Page 4 Thursday, March 16, 2006 4:23 PM 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.

  • Page 49: Riding Downhill

    E_8gg.book Page 5 Thursday, March 16, 2006 4:23 PM 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 50: Hard-Packed Snow

    E_8gg.book Page 6 Thursday, March 16, 2006 4:23 PM 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...

  • Page 51: 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 52: Strap

    E_8gg.book Page 8 Thursday, March 16, 2006 4:23 PM ESU00245 Strap For RS90M/RS90MS 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.

  • Page 53: Driving

    E_8gg.book Page 9 Thursday, March 16, 2006 4:23 PM ESU03471 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.

  • Page 54: Stopping The Engine

    E_8gg.book Page 10 Thursday, March 16, 2006 4:23 PM 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.

  • Page 55: Transporting

    E_8gg.book Page 11 Thursday, March 16, 2006 4:23 PM 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.

  • Page 56: Periodic Maintenance

    (if applicable). WARNING If you are not familiar with maintenance work, have a Yamaha dealer do it for you. PROPER PERIODIC MAINTENANCE OF YOUR SNOWMOBILE IS IMPORTANT IN ORDER TO ENJOY LONG, PLEASURABLE SERVICE. ESPECIALLY IMPORTANT ARE THE MAINTENANCE SERVICES RELATED TO EMISSIONS CONTROL.

  • Page 57: General Maintenance And Lubrication Chart

    Adjust synchronization of car- buretors. Check for leakage. ∗ Exhaust system Tighten or replace gasket if necessary. ∗ It is recommended that these items be serviced by a Yamaha dealer. ESU04980 General maintenance and lubrication chart CD-32E Every Initial Pre-...
  • Page 58 ∗ Adjust toe-out if necessary. Strap Check for damage. ∗ Replace if necessary. (RS90M/RS90MS) Check operation. Lights 6-10, 8-36 Replace bulbs if necessary. Check condition. ∗ Battery Charge if necessary. ∗ It is recommended that these items be serviced by a Yamaha dealer.
  • Page 59 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 system: After disassembling the master cylinder or caliper cylinder, always change the brake fluid. Regularly check the brake fluid level and add fluid if necessary.

  • Page 60: 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. ESU03681 Checking the spark plugs The spark plug is an important engine component and is easy to inspect.
  • Page 61 E_8gg.book Page 6 Thursday, March 16, 2006 4:23 PM Specified spark plug: · R · CR8E (NGK) or CR8E (NGK) 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.

  • Page 62: Adjusting The Engine Idling Speed

    Adjusting the carburetors The carburetors are an important part of the engine and its emission control system, which require very sophisti- cated adjustment. Therefore, carburetor adjustments should be left to a Yamaha dealer, who has the neces- sary professional knowledge and experience.

  • Page 63: Adjusting The High-Altitude Settings

    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. The dealer can tell you if there are any changes necessary for the altitude where you plan to ride.

  • Page 64: Changing The Engine Oil

    E_8gg_Periodic.fm Page 9 Monday, April 10, 2006 9:33 AM ESU04202 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 65 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 66 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 67: 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 68 3. Fill the coolant reservoir with coolant until it reaches 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. 8-13...

  • Page 69: Replacing The V-Belt

    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 70 E_8gg.book Page 15 Thursday, March 16, 2006 4:23 PM 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.

  • Page 71: Checking The Drive Chain Housing Oil Level And The Drive Chain Tension

    E_8gg.book Page 16 Thursday, March 16, 2006 4:23 PM 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.
  • Page 72 E_8gg.book Page 17 Thursday, March 16, 2006 4:23 PM 3. Remove the dipstick and check that the oil is between the maximum and minimum level marks. If the oil is below the minimum level mark, add sufficient oil to raise it to the maximum level mark. 2 Maximum level mark 3 Minimum level mark Drive chain oil: GL-3...

  • Page 73: Checking The Brake Pads

    E_8gg.book Page 18 Thursday, March 16, 2006 4:23 PM ESU01741 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 È RS90N/RS90R/RS90NR/RS90MS/RS90GT/RSG90/ RSG90GT É...

  • Page 74: 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 75 E_8gg.book Page 20 Thursday, March 16, 2006 4:23 PM ESU01912 Adjusting the ski spring preload The spring preload can be adjusted by turning the spring preload adjuster 1. For RS90R/RSG90 CD-11E Standard Spring seat length* Increased ← → Decreased ← →...
  • Page 76 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. ESU05100 Adjusting the front shock absorber air pressure...
  • Page 77 E_8gg.book Page 22 Thursday, March 16, 2006 4:23 PM 3. Remove the air valve cap 2 from the shock absorber. 4. Install the hose connector 3 of the special pump onto the air valve of the shock absorber and tighten it approximately six turns until the pressure registers on the pump gauge.
  • Page 78 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. 8-23...
  • Page 79 E_8gg.book Page 24 Thursday, March 16, 2006 4:23 PM ESU04750 Adjusting the ski damping forces For RS90GT/RSG90GT Compression damping force The compression damping force of each ski shock absorber can be adjusted by turning the compression damping force adjusting knob 1. CD-28E 12 clicks 7 clicks...
  • Page 80 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. ESU04045 Adjusting the rear suspension spring preload...
  • Page 81 Have a Yamaha dealer make this adjustment as it requires special tools. 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.
  • Page 82 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. 8-27...
  • Page 83 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. 8-28...
  • Page 84 E_8gg.book Page 29 Thursday, March 16, 2006 4:23 PM ESU04092 Adjusting the control rods The weight transfer can be adjusted by turning the con- trol rod adjuster or adjusting nut. For RS90R/RS90GT/RSG90/RSG90GT 1. Loosen the locknut 1. 2. Turn the control rod adjuster 2 in direction a to increase weight transfer or direction b to decrease weight transfer.
  • Page 85 E_8gg.book Page 30 Thursday, March 16, 2006 4:23 PM For RS90N/RS90NR/RS90M/RS90MS 1. Loosen the locknut 1. 2. Turn the control rod adjusting nut 2 in direction a to increase weight transfer or direction b to decrease weight transfer. 3. Tighten the locknut while holding the adjusting nut in place.

  • Page 86: Adjusting The Drive Track

    E_8gg.book Page 31 Thursday, March 16, 2006 4:23 PM ESU03532 Adjusting the drive track 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.
  • Page 87 E_8gg.book Page 32 Thursday, March 16, 2006 4:23 PM Adjusting the drive track 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.

  • Page 88: Aligning The Skis

    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. ESU03543 Adjusting the handlebar For RS90R/RS90GT/RSG90/RSG90GT 1.
  • Page 89 E_8gg.book Page 34 Thursday, March 16, 2006 4:23 PM 2. Loosen the handlebar bolts. 3. Move the handlebar up or down to adjust the handle- bar height to the desired position. CAUTION : Make sure that the projection on the handlebar is not installed into the area a shown.

  • Page 90: 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. 8-35...

  • Page 91: Replacing A Headlight Bulb

    E_8gg.book Page 36 Thursday, March 16, 2006 4:23 PM ESU02082 Replacing a headlight bulb 1. Lift up the shroud. 2. Disconnect the headlight coupler. 3. Remove the bulb holder cover. 4. Unhook the bulb holder by pushing it in, then upward. 1 Bulb holder cover 2 Bulb holder 5.

  • Page 92: 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 93 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. 8-38...
  • Page 94 E_8gg.book Page 39 Thursday, March 16, 2006 4:23 PM 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...

  • Page 95: Troubleshooting

    2. Electrical system Worn or damaged piston and cylinder Poor or no spark ... Ask a Yamaha dealer to inspect. Spark plugs are dirty with carbon or are wet ... Remove carbon or wipe the spark plugs dry; replace if necessary.
  • Page 96 E_8gg.book Page 2 Thursday, March 16, 2006 4:23 PM CAUTION : Use the connecting leads to jump-start the snowmobile only. Do not use the connecting leads for any other purpose. 1. Apply the parking brake and turn the main switch to “OFF”. 2.
  • Page 97 (-) lead are seated securely in the 4. Improper fuel flow ... See A.1 above. lead holders. 5. Incorrect V-belt clutch settings for alti- tude or conditions ... Ask a Yamaha WARNING dealer to inspect. Be sure to pull the lead covers back over the terminals completely.
  • Page 98 3. Tight, loose, or broken drive chain ..Replace. Ask a Yamaha dealer to inspect. 4. Worn or damaged idler wheels or shafts ... Ask a Yamaha dealer to H. V-belt twists inspect. 1. Improper V-belt ... Replace with the 5.

  • Page 99: Storage

    In areas where oxygenated fuel (gaso- WARNING hol) is used, completely drain the fuel Never smoke around the battery system. Consult a Yamaha dealer if further while it is being charged. Sparks information is needed. may ignite the hydrogen gas created by the battery.
  • Page 100 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 out 7.

  • Page 101: Specifications

    E_8gg.book Page 1 Thursday, March 16, 2006 4:23 PM ESU00228 S PECIFICATIONS 1 1 - ESU00229 Dimensions CS-01E RS90N/RS90R/RS90NR/RS90M/RS90MS RS90GT/RSG90/RSG90GT Overall length 2,755 mm (108.5 in): RS90N/RS90R/ RS90NR/RS90GT 3,185 mm (125.4 in): RS90M 3,330 mm (131.1 in): RS90MS 3,000 mm (118.1 in): RSG90/RSG90GT Overall width 1,225 mm ( 48.2 in): RS90N/RS90R/ RS90NR/RS90GT/...

  • Page 102: Chassis

    E_8gg.book Page 2 Thursday, March 16, 2006 4:23 PM RS90N/RS90R/RS90NR/RS90M/RS90MS RS90GT/RSG90/RSG90GT KEIHIN, CVK40 × 3 Carburetor type Fuel Unleaded gasoline Pump octane (R+M)/2; 86 or higher Starting system Electric starter ESU00231 Chassis CS-03E RS90N/RS90R/RS90NR/RS90M/RS90MS RS90GT/RSG90/RSG90GT Drive track and suspension: Track Molded rubber, fiber glass rod reinforced Width 381 mm (15.0 in): RS90N/RS90R/...
  • Page 103 E_8gg.book Page 3 Thursday, March 16, 2006 4:23 PM RS90N/RS90R/RS90NR/RS90M/RS90MS RS90GT/RSG90/RSG90GT Transmission: Type Automatic centrifugal engagement, infinite- ly variable 3.8:1–1:1 Sheave distance Approx. 268.5 mm (10.57 in) Sheave offset Approx. 15 mm (0.59 in) ∗1 Engagement speed Approx. 3,600 r/min:RS90N/RS90NR/ RSG90/RSG90GT Approx.

  • Page 104: Electric

    E_8gg.book Page 4 Thursday, March 16, 2006 4:23 PM ESU00232 Electric CS-04E RS90N/RS90R/RS90NR/RS90M/RS90MS RS90GT/RSG90/RSG90GT 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 1.8 Amperes/hr for 10 hrs Bulb ×...
  • Page 105 E_8gg.book Page 5 Thursday, March 16, 2006 4:23 PM –MEMO–...
  • Page 106 E_8gg.book Page 1 Thursday, March 16, 2006 4:23 PM 12-1...
  • Page 107 E_8gg.book Page 2 Thursday, March 16, 2006 4:23 PM 12-2...
  • Page 108 E_8gg.book Page 3 Thursday, March 16, 2006 4:23 PM –MEMO–...
  • Page 110 YAMAHA MOTOR CO., LTD. PRINTED IN JAPAN PRINTED ON RECYCLED PAPER 2006.04 - 1.6×2 CR...

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