Owner`s manual

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OWNER’S MANUAL

RS90PB

RS90PLTB

RST90B

RST90PGTB

8HV-28199-10

LIT-12628-03-03

ESU10012

Read this manual carefully

before operating this vehicle.

DIC183

Summary of content (142 pages)

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ESU10012 OWNER’S MANUAL Read this manual carefully before operating this vehicle.
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U8HV10E0.book Page 1 Monday, May 16, 2011 1:15 PM ESU10041 Read this manual carefully before operating this vehicle. This manual should stay with this vehicle if it is sold.
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U8HV10E0.book Page 1 Monday, May 16, 2011 1:15 PM Introduction ESU10121 Congratulations on your purchase of a Yamaha snowmobile. This model is the result of Yamaha’s vast experience in the production of fine sporting and touring snowmobiles. It represents the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields. This manual will give you an understanding of the operation, inspection, and basic maintenance of this snowmobile.
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U8HV10E0.book Page 1 Monday, May 16, 2011 1:15 PM Important manual information ESU10151 Particularly important information is distinguished in this manual by the following notations. This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. EWS00021 WARNING A WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
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U8HV10E0.book Page 1 Monday, May 16, 2011 1:15 PM Contents Location of the important labels ..... 1 Safety information ............................ 6 Description ........................................ 9 Control functions ............................ 12 Main switch .................................. 12 Starter (choke) lever (RST90) ...... 12 Throttle lever ................................ 12 Throttle override system (T.O.R.S.) .................................. 13 Multi-function meter unit ...............
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U8HV10E0.book Page 2 Monday, May 16, 2011 1:15 PM Contents Adjusting the engine idling speed (RST90) ..................................... 69 Adjusting the throttle lever free play ............................................ 69 Checking the throttle override system (T.O.R.S.) ..................... 72 Checking the air filter ................... 73 Carburetors (RST90) .................... 77 High-altitude settings .................... 77 Valve clearance ............................
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U8HV10E0.book Page 1 Monday, May 16, 2011 1:15 PM Location of the important labels ESU10216 Read and understand all of the labels on your vehicle. They contain important information for safe and proper operation of your vehicle. Never remove any labels from your vehicle. If a label becomes difficult to read or comes off, a replacement label is available from your Yamaha dealer.
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U8HV10E0.
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U8HV10E0.book Page 3 Monday, May 16, 2011 1:15 PM Location of the important labels 1 RS90P / RS90PLT 2 ATTENTION 8ET-2815K-10 1 RST90 3 NOTICE 8ET-2815K-00 1 RST90PGT 4 WARNING SEVERE INJURY OR DEATH MAY RESULT IF YOU IGNORE ANY OF THE FOLLOWING: • Read the Owner’s Manual and all labels before operating this vehicle. • This vehicle is a high performance machine. It should be operated by an experienced operator. • Check throttle, brake, and steering for proper operation before starting engine.
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U8HV10E0.book Page 4 Monday, May 16, 2011 1:15 PM Location of the important labels 8 9 RS90P / RS90PLT TUNE-UP SPECIFICATIONS DRIVE 1. CHAIN CASE OIL Q’TY 2. CHAIN CASE OIL TYPE 250 cm³ (8.5 oz) GL-3 75W or 80W 3. TRACK TENSION 30 ~ 35 mm (1.18 ~ 1.38 in)/100 N (10 kg, 22 lb) * FOR MORE INFO: SEE SERVICE MANUAL FOR THIS MODEL. * SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE. 8FR-77763-E0 SPECIFICATIONS DE LA MISE AU POINT ENTRAÎNEMENT 1. CAPACITÉ D’HUILE DU CARTER DE CHAÎNE 250 cm³ 2.
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U8HV10E0.book Page 5 Monday, May 16, 2011 1:15 PM Location of the important labels 13 RS90PLT 14 RST90 / RST90PGT LOAD LIMIT / CHARGE LIMITE 10kg {22lbs} 8ET-24897-00 15 RST90 / RST90PGT LOAD LIMIT / CHARGE LIMITE 20kg {44lbs} 8FM-24897-01 MAX. TOWING FORCE MAX. VERTICAL FORCE FORCE DE REMORQUAGE MAX. FORCE VERTICALE MAX.
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U8HV10E0.book Page 6 Monday, May 16, 2011 1:15 PM Safety information ESU10193 As the vehicle’s owner, you are responsible for the safe and proper operation of your snowmobile. When you ride your snowmobile, you must know and use the following for your safety. Severe injury or death may result if you ignore any of the following. Before you operate your snowmobile ● ● Read the Owner’s Manual and all labels. Become familiar with all of the operating controls and their function.
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U8HV10E0.book Page 7 Monday, May 16, 2011 1:15 PM Safety information ● ● Always ride with other snowmobilers when going on a ride. You may need help if you run out of fuel, have an accident, or damage your snowmobile. Many surfaces such as ice and hardpacked snow require much longer stopping distances. Be alert, plan ahead and begin decelerating early. The best braking method on most surfaces is to release the throttle and apply the brake gently—not suddenly.
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U8HV10E0.book Page 8 Monday, May 16, 2011 1:15 PM Safety information clothes dryers, and the like. Allow the engine to cool off before storing the snowmobile in an enclosed space.
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U8HV10E0.book Page 9 Monday, May 16, 2011 3:37 PM Description ESU10261 RS90P 1,2,3 4 5,6,7 13 12 8,9 10 11 RS90PLT 1,2,3 4 5,6,7 13 12 8,9 10 11 1. Battery 2. Main fuse 3. Air filter 4. Oil filler cap 5. Fuse box 6. Coolant reservoir 7. Coolant recovery tank 8. Storage compartment 9. Tool kit 10. Tail/brake light 11. Slide rail suspension 12. Drive track 13.
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U8HV10E0.book Page 10 Monday, May 16, 2011 1:15 PM Description 10,12 1,2,3,4 20 5,6 7 8 9 19 13 14 RST90 17 1,2,3 4 16 5,6 15 7 8 9 10,11,12 13 14 RST90PGT 17 1. Battery 2. Main fuse 3. Air filter 4. Oil filler cap 5. Fuse box 6. Coolant reservoir 7. Passenger grip warmer switch 8. Passenger grip 9. Backrest 10. Storage compartment 11. Storage pouch (RST90PGT) 12. Tool kit 13. Tail/brake light 14. Tow hitch bracket 15. Slide rail suspension 16. Drive track 17. V-belt holder 18.
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U8HV10E0.book Page 11 Monday, May 16, 2011 1:15 PM Description RS90P / RS90PLT 12 3 467 8 11 5 10 RST90 1 2 9 3 11 RST90PGT 1 2 3 5 6 4 7 9 12 12 4 6 7 11 8 10 9 13 10 1. 2. 3. 4. 5. 8 Brake lever Parking brake lever Grip warmer adjusting switch Thumb warmer adjusting switch Helmet shield heater jack (RS90P / RS90PLT / RST90PGT) 6. Engine stop switch 7. Throttle lever 8. Main switch 9. Shift lever 10. Auxiliary DC jack 11. Headlight beam switch 12. Shroud latch (RST90) 13.
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U8HV10E0.book Page 12 Monday, May 16, 2011 1:15 PM Control functions ESU13740 Main switch The main switch controls the ignition and lighting systems. The various positions are described below. 1 2 3 1. Starter (choke) lever TIP Refer to the “Starting the engine” section on page 48 for proper operation. 1. Off 2. On 3. Start Off The ignition circuit is switched off. The key can be removed only in this position. On The ignition circuit is switched on. Start The starting circuit is switched on.
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U8HV10E0.book Page 13 Monday, May 16, 2011 1:15 PM Control functions 1. Throttle lever ESU13750 Throttle override system (T.O.R.S.) EWS00041 WARNING If the T.O.R.S. is activated, make sure that the cause of the malfunction has been corrected and that the engine can be operated without a problem before restarting the engine. Continuing to operate with a malfunction could cause loss of control or damage. If the throttle valves or throttle cable malfunctions during operation, the T.O.R.S.
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U8HV10E0.book Page 14 Monday, May 16, 2011 1:15 PM Control functions RST90 ● a display brightness control function When the key is turned to the on position, the tachometer needle makes one sweep, and the low coolant temperature indicator light, the warning light, and all segments of the meter unit display come on and go off. 12 3 4 5 6 7 8 9 FHI E LO 1. Warning light “ ” 2. Engine trouble warning indicator “ 3.
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U8HV10E0.book Page 15 Monday, May 16, 2011 1:15 PM Control functions Odometer and tripmeter modes counting the distance traveled from that point. When this occurs, change the engine oil as soon as possible. (See page 78 for the oil change procedure.) E LO E LO 1 1.
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U8HV10E0.book Page 16 Monday, May 16, 2011 1:15 PM Control functions If the engine oil is changed before the oil change tripmeter appears in the display (i.e., before the periodic oil change interval has been reached), the tripmeter must be reset after the oil change for the next periodic oil change to be indicated at the correct time. In that case, reset the oil change tripmeter as follows. 3. To reset the oil change tripmeter (when the engine oil was changed before the oil change tripmeter appeared) 1.
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U8HV10E0.book Page 18 Monday, May 16, 2011 1:15 PM Control functions RS90P / RS90PLT / RST90PGT 1. High beam indicator light “ RS90P / RS90PLT / RST90PGT ” 1. Low coolant temperature indicator light “ ” RST90 RST90 1. High beam indicator light “ ” 1. Low coolant temperature indicator light “ ” 2. Warning light “ ” 3. Engine trouble warning indicator “ 4.
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U8HV10E0.book Page 19 Monday, May 16, 2011 1:15 PM Control functions ESU10426 Fuel meter and grip/thumb warmer level indicator RS90P / RS90PLT / RST90PGT The fuel meter and grip/thumb warmer level indicator have eight segments which show the amount of fuel remaining in the fuel tank, the grip warmer level, or the thumb warmer level. RS90P / RS90PLT / RST90PGT 1. Fuel level warning indicator “ 2. Warning light “ ” ” RST90 1. Fuel meter and grip/thumb warmer level indicator RST90 1.
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U8HV10E0.book Page 20 Monday, May 16, 2011 1:15 PM Control functions When the thumb warmer adjusting switch is pressed, the thumb warmer indicator comes on and the display switches to the thumb warmer level. See “Grip/thumb warmer adjusting switch” on page 24 for detailed information. RS90P / RS90PLT / RST90PGT 1 RS90P / RS90PLT / RST90PGT 1. Grip warmer adjusting switch RST90 1 1. Grip warmer indicator “ ” 2. Thumb warmer indicator “ ” RST90 1. Grip warmer adjusting switch 1.
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U8HV10E0.book Page 21 Monday, May 16, 2011 1:15 PM Control functions ● ● The top segment of the grip/thumb warmer level indicator flashes once when the grip/thumb warmer adjustment reaches the maximum level. The bottom segment of the grip/thumb warmer level indicator flashes once when the grip/thumb warmer adjustment reaches the minimum level. When the engine is started, the grip/thumb warmer levels are set to the levels selected when the engine was last stopped. RST90 1.
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U8HV10E0.book Page 22 Monday, May 16, 2011 1:15 PM Control functions If the oil level warning indicator and the warning light do not go off, check the engine oil level in the oil tank (see page 78 for engine oil level checking procedures), and add engine oil if necessary. If the oil level warning indicator and the warning light still remain on, have a Yamaha dealer check the snowmobile.
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U8HV10E0.book Page 23 Monday, May 16, 2011 1:15 PM Control functions ESU10513 ESU13812 Coolant temperature warning indicator “ ” Electric power steering warning indicator “EPS” (RS90P / RS90PLT / RST90PGT) If the engine overheats, the coolant temperature warning indicator and the warning light come on. When this occurs, stop the engine immediately and allow the engine to cool down, and then check the coolant level in the coolant reservoir. (See page 84 for checking procedures.
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U8HV10E0.book Page 24 Monday, May 16, 2011 1:15 PM Control functions ate the engine longer than necessary if there is an error code to avoid possible engine damage. [ECS00820] RS90P / RS90PLT / RST90PGT 2 3 1 1. Engine stop switch “ ” During the first few rides, practice using the stop switch so that you can react quickly in an emergency. 1. Warning light “ ” 2. Engine trouble warning indicator “ 3.
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U8HV10E0.book Page 25 Monday, May 16, 2011 1:15 PM Control functions RS90P / RS90PLT / RST90PGT 1 See “Fuel meter and grip/thumb warmer level indicator” on page 19 for detailed information. ESU10696 Auxiliary DC jack The auxiliary DC jack is located in the front panel and can be used for accessories. TIP The auxiliary DC jack can only be used if the engine is running. 1. Grip warmer adjusting switch To use the auxiliary DC jack 1. 2. RST90 1 Start the engine.
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U8HV10E0.book Page 26 Monday, May 16, 2011 1:15 PM Control functions 3. After using the auxiliary DC jack, be sure to remove the accessory power plug from the jack and to close the auxiliary DC jack cap. 1 2 ECS00122 NOTICE ● ● To avoid circuit overload and a possible fuse blowing, do not use accessories requiring more than the maximum rated capacity for the auxiliary DC jack. (See page 109 for the specified fuse amperage.
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U8HV10E0.book Page 27 Monday, May 16, 2011 1:15 PM Control functions 1. Brake lever TIP When the brake lever is squeezed, the brake light comes on. ECS00060 NOTICE Make sure that the brake lever end does not project out over the handlebar end. This will help prevent brake lever damage when the snowmobile is placed on its side for service. ESU10581 Parking brake lever ESU10593 Shift lever The shift lever is used to put the snowmobile into forward or reverse.
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U8HV10E0.book Page 28 Monday, May 16, 2011 1:15 PM Control functions 3 2 1 1. Pull out. 2. Slide to “REV” (reverse). 3. Release. 1. Pull out. 2. Slide to “REV” (reverse). 3. Release. ECS00072 RST90 NOTICE Do not use the shift lever while the snowmobile is moving, otherwise the drive train could be damaged. ESU14092 Drive guard EWS00402 WARNING ● 1. Shift lever ● Coming in contact with the rotating Vbelt or clutch parts can cause severe injury or death.
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U8HV10E0.book Page 29 Monday, May 16, 2011 1:15 PM Control functions The drive guard is designed to protect the Vbelt clutch and V-belt in case parts break or come loose. The drive guard is located behind the left side cover (RS90P / RS90PLT / RST90PGT), or under the shroud (RST90). [See page 63 (RS90P / RS90PLT / RST90PGT) or page 67 (RST90) for information on how to access the drive guard.] To remove the drive guard 1. 1 1.
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U8HV10E0.book Page 30 Monday, May 16, 2011 1:15 PM Control functions RS90P / RS90PLT / RST90PGT 1 2 1 1. V-belt holder RST90 1. Passenger grip 2. Passenger grip adjusting knob To change the passenger grip position 1. 2. 3. Remove the passenger grip adjusting knob by turning it counterclockwise. Move the passenger grip to the desired position. Install the adjusting knob by turning it clockwise. EWS00780 WARNING 1.
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U8HV10E0.book Page 31 Monday, May 16, 2011 1:15 PM Control functions RST90 1 2 1. 2. 3. 4. 1. Footrest 2. Screw Passenger grip warmer switch Off “HI” (high) “LO” (low) ECS00131 NOTICE ● RST90PGT 1 ● Make sure that the screws are tightened securely after changing the position of the footrests. Do not overtighten the screws, otherwise the footrest may be damaged. ESU14130 HI LO Backrest (RST90 / RST90PGT) EWS00131 4 2 3 1. 2. 3. 4.
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U8HV10E0.book Page 32 Monday, May 16, 2011 1:15 PM Control functions When riding without a passenger, the backrest can be moved to the forward-most position, and its angle can be adjusted to suit the operator’s preference as shown. RST90 1 2 1. Backrest 2. Backrest adjusting knob RST90PGT 1 ESU14120 2 Storage compartment (RS90P / RS90PLT / RST90PGT) RS90P / RS90PLT The storage compartment is located behind the seat.
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U8HV10E0.book Page 33 Monday, May 16, 2011 1:15 PM Control functions To close the storage compartment Fold the storage compartment cover down, and then turn the fastener to the original position. 1 RST90PGT This snowmobile is equipped with a storage compartment, which includes a storage pouch. Storage compartment 1. Storage compartment ECS00900 NOTICE The bottom of the storage compartment may be hot during or immediately after operating the snowmobile. It can cause burns if it becomes extremely hot.
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U8HV10E0.book Page 34 Monday, May 16, 2011 1:15 PM Control functions ECS00781 NOTICE Before starting the engine, make sure that the tool kit is securely fastened and that the storage pouch zipper is completely closed. ESU10823 Storage areas (RST90) This snowmobile is equipped with a storage compartment, rear storage area, and rear carrier. 1. Rear storage area 2.
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U8HV10E0.book Page 35 Monday, May 16, 2011 1:15 PM Control functions 3 4 1 1 2 1. Backrest 2. Rear carrier 3. Remove the passenger seat lock knob, and then remove the passenger seat. 3 1. 2. 3. 4. 5. 6. 1. Passenger seat 2. Passenger seat lock knob 4. Hole Rear carrier Bolt Carrier lock bracket Slide the rear carrier backward until it stops. Pull the carrier lock lever up to lock the rear carrier in place. Then, place the lever under the rear carrier and secure it with the holder.
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U8HV10E0.book Page 36 Monday, May 16, 2011 1:15 PM Control functions 3. Align the holes in the backrest bracket with the bolts on the carrier lock bracket, and then place the backrest on the carrier lock bracket. 1. Carrier lock lever ESU10863 Tow hitch bracket (RST90 / RST90PGT) 1. Hole ECS00241 NOTICE To prevent premature wear of the V-belt, avoid traveling under 10 km/h (6 mi/h) when towing for long distances or long periods of time.
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U8HV10E0.book Page 37 Monday, May 16, 2011 1:15 PM Control functions ESU10605 Fuel EWS00071 WARNING Gasoline and gasoline vapors are extremely flammable. To avoid fires and explosions and to reduce the risk of injury when refueling, follow these instructions. Make sure there is sufficient gasoline in the tank. 1. Before refueling, turn off the engine and be sure that nobody is on the snowmobile.
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U8HV10E0.book Page 38 Monday, May 16, 2011 1:15 PM Control functions Recommended fuel: REGULAR UNLEADED GASOLINE ONLY Fuel tank capacity: RS90P 34.6 L (9.14 US gal, 7.61 Imp.gal) RS90PLT 34.6 L (9.14 US gal, 7.61 Imp.gal) RST90 39.3 L (10.38 US gal, 8.65 Imp.gal) RST90PGT 34.6 L (9.14 US gal, 7.61 Imp.gal) Your Yamaha engine has been designed to use regular unleaded gasoline with a pump octane number [(R+M)/2] of 86 or higher, or a research octane number of 91 or higher.
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U8HV10E0.book Page 39 Monday, May 16, 2011 1:15 PM Control functions 1. 2. Loosen the locknut. To increase the spring preload and thereby harden the suspension, turn the adjusting nut in direction (a). To decrease the spring preload and thereby soften the suspension, turn the adjusting nut in direction (b). 3 1 3. Tighten the locknut to the specified torque. NOTICE: Always tighten the locknut against the adjusting nut, and then tighten the locknut to the specified torque.
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U8HV10E0.book Page 40 Monday, May 16, 2011 1:15 PM Control functions TIP The spring preload setting is determined by measuring distance A, shown in the illustration. The longer distance A is, the higher the spring preload; the shorter distance A is, the lower the spring preload. Spring preload setting*: Minimum (soft): RST90 111.5 mm (4.39 in) RST90PGT 122.1 mm (4.81 in) Standard: RST90 112.5 mm (4.43 in) RST90PGT 122.1 mm (4.81 in) Maximum (hard): RST90 122.5 mm (4.82 in) RST90PGT 132.1 mm (5.
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U8HV10E0.book Page 41 Monday, May 16, 2011 1:15 PM Control functions ESU13094 Adjusting the 2-up adjusting blocks (RST90) (a) EWS00760 WARNING 1 3 (b) 2 1. Spring preload adjusting nut 2. Distance A 3. Locknut Make sure that the 2-up adjusting blocks are installed in the same position on both sides of the snowmobile, otherwise poor handling and loss of stability may result. The spring force can be adjusted by changing the position of the 2-up adjusting blocks.
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U8HV10E0.book Page 42 Monday, May 16, 2011 1:15 PM Control functions (b) (a) 1 1. 2. 3. 4. 2. 3. 4. 2-up position (rider and passenger) Solo rider position Special tool Lock pin Pull the lock pin and turn the special tools to change the block position. Release the lock pin. Remove the special tools from the 2-up adjusting block. 1.
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U8HV10E0.book Page 43 Monday, May 16, 2011 1:15 PM Control functions 1 3 Min 4 Max (b) (a) 2 1 1. Rebound damping force adjusting knob Rebound damping force setting: Minimum (soft): 20 click(s) in direction (b)* Standard: 11 click(s) in direction (b)* Maximum (hard): 3 click(s) in direction (b)* * With the adjusting knob fully turned in direction (a) 1. 2. 3. 4. 5.
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U8HV10E0.book Page 44 Monday, May 16, 2011 1:15 PM Control functions TIP (b) 1 Make sure that the special wrench is securely fitted on the locknut. 2 1 (a) 1. Special wrench Locknut tightening torque: 35 Nm (3.5 m·kgf, 25 ft·lbf) RST90 / RST90PGT EWS00770 WARNING The left and right adjusting nuts must be set to the same position. Uneven settings can cause poor handling and loss of stability. 1. 44 Loosen the locknut while holding the adjusting nut. 1. Locknut 2. Control rod adjusting nut 2.
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U8HV10E0.book Page 45 Monday, May 16, 2011 1:15 PM Control functions 1 2 3 5 1. 2. 3. 4. 5. 3. 4 Locknut Control rod adjusting nut Standard position Adjustable range Red paint area Tighten the locknut while holding the adjusting nut in place. NOTICE: Always tighten the locknut against the adjusting nut, and then tighten the locknut to the specified torque. [ECS00860] Locknut tightening torque: 25 Nm (2.
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U8HV10E0.book Page 46 Monday, May 16, 2011 1:15 PM Pre-operation checks ESU11071 Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the inspection and maintenance procedures and schedules described in the Owner’s Manual. EWS00191 WARNING Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage. Do not operate the vehicle if you find any problem.
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U8HV10E0.book Page 47 Monday, May 16, 2011 1:15 PM Pre-operation checks ITEM CHECKS PAGE Check the deflection. Adjust if necessary. Check for wear and damage. If necessary, have a Yamaha dealer replace track. 98 Drive track • • • • Slide runners • Check for wear and damage. • If necessary, have Yamaha dealer replace slide runners. Steering • Check for excessive free play. Lights, signals and switches • Check operation. • Correct if necessary.
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U8HV10E0.book Page 48 Monday, May 16, 2011 1:15 PM Operation ESU13500 Read the Owner’s Manual carefully to become familiar with all controls. If there is a control or function you do not understand, ask your Yamaha dealer. EWS00201 WARNING Failure to familiarize yourself with the controls can lead to loss of control, which could cause an accident or injury. 2.
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U8HV10E0.book Page 49 Monday, May 16, 2011 1:15 PM Operation 1 2 1 1. Start 4. 5. Warm up the engine until it runs smoothly. Be sure the low coolant temperature indicator light has gone out before operation. (See page 18 for detailed information about the indicator light.) 1. Run position 2. Off position 3. Fully open the starter (choke) lever. RST90 1. Apply the parking brake. 1. 2. 3. 4.
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U8HV10E0.book Page 50 Monday, May 16, 2011 1:15 PM Operation ECS00340 1 NOTICE ● ● 1. Start 5. 6. Warm up the engine, and then close the starter (choke) lever when the engine runs smoothly. Be sure the low coolant temperature indicator light has gone out before operation. (See page 18 for detailed information about the indicator light.) ESU11310 Break-in There is never a more important period in the life of your engine than the period between 0 and 500 km (300 mi).
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U8HV10E0.book Page 51 Monday, May 16, 2011 1:15 PM Operation Pay particular attention to the safety information on page 6. Please read all warning and notice labels on your snowmobile. Also, read the Snowmobiler’s Safety Handbook that is supplied with your snowmobile. Learning to ride your snowmobile Before you ride, always perform the pre-operation checks listed on page 46. The short time spent checking the condition of the snowmobile will be rewarded with added safety and a more reliable snowmobile.
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U8HV10E0.book Page 52 Monday, May 16, 2011 1:15 PM Operation er speeds or in tighter curves. Lean more as the turn gets sharper or is made at higher speeds. Improper riding techniques such as abrupt throttle changes, excessive braking, incorrect body movements, or too much speed for the sharpness of the turn may cause the snowmobile to tip. If your snowmobile begins to tip while turning, lean more into the turn to regain balance.
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U8HV10E0.book Page 53 Monday, May 16, 2011 1:15 PM Operation Traversing a slope EWS00251 WARNING Driving across the face of a slope (“sidehilling”) can lead to overturn or loss of control if proper techniques are not used. Follow these instructions to reduce your risk of an accident. Do not try steeper or more difficult inclines until you have developed your skill on gentle slopes. Traversing a slope requires you to properly position your weight to maintain proper balance.
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U8HV10E0.book Page 54 Monday, May 16, 2011 1:15 PM Operation track, slide runners, and drive sprockets.
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U8HV10E0.book Page 55 Monday, May 16, 2011 1:15 PM Operation around the already weakened area. To minimize possible damage, consult your stud manufacturer for installation and stud pattern recommendations. Yamaha does not recommend track studding. RS90P / RS90PLT / RST90PGT ESU11395 1 Driving EWS00300 Be sure to read the “SAFETY INFORMATION” section on page 6 and the “Riding your snowmobile” section on page 50 carefully before operating the snowmobile. 3 2 WARNING 1. Pull out. 2.
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U8HV10E0.book Page 56 Monday, May 16, 2011 1:15 PM Operation 1 1. Pull out. 2. Slide to “REV” (reverse). 3. Release. TIP 1. Off ● Push down the engine stop switch to stop the engine in an emergency. The reverse buzzer beeps while the shift lever is in reverse. 2. While squeezing the brake lever, release the parking brake by moving the parking brake lever to the right, and then release the brake lever. ESU13780 Transporting 3. Squeeze the throttle lever slowly to start out.
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U8HV10E0.book Page 57 Monday, May 16, 2011 1:15 PM Operation ● ● If transporting the snowmobile in an open trailer or truck, put a tight fitting cover on the snowmobile. A cover specifically designed for your snowmobile is best. This will help keep foreign objects out of the cooling vents, and also help protect the snowmobile against damage from debris on the road.
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U8HV10E0.book Page 58 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment ESU11452 Periodic inspection, adjustment, and lubrication will keep your snowmobile in the safest and most efficient condition possible. Safety is an obligation of the vehicle owner/operator. The most important points of vehicle inspection, adjustment, and lubrication are explained on the following pages.
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U8HV10E0.book Page 59 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment ESU11461 Periodic maintenance chart for the emission control system Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills. ITEM REMARKS INITIAL EVERY 1 month or 800 km (500 mi) (40 hr) Seasonally or 4000 km (2500 mi) (200 hr) PAGE Spark plugs • Check condition. • Adjust gap and clean. • Replace if necessary.
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U8HV10E0.book Page 60 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment ESU11564 General maintenance and lubrication chart ITEM REMARKS Engine oil • Change (warm engine before draining). * Engine oil filter cartridge • Replace. * Cooling system • Check coolant level. • Bleed the cooling system if necessary. • Check engagement and shift speed. • Adjust if necessary.
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U8HV10E0.book Page 61 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment ITEM REMARKS INITIAL EVERY 1 month or 800 km (500 mi) (40 hr) Seasonally or 4000 km (2500 mi) (200 hr) PAGE * Slide runners • Check for wear and damage. • Replace if necessary. 98 * Skis and ski runners • Check for wear and damage. • Replace if necessary. 96 * Steering system • Check toe-out. • Adjust if necessary. 97 * Steering bearings • Check bearing assemblies for looseness.
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U8HV10E0.book Page 62 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment ESU14112 Tool kit RS90P / RS90PLT / RST90 The owner’s tool kit is located in the storage compartment. (See page 32 for information on how to access the storage compartment.) The service information included in this manual and the tools provided in the owner’s tool kit are intended to assist you in the performance of preventive maintenance and minor repairs.
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U8HV10E0.book Page 63 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment ESU14143 TIP 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. 3 EWS00091 WARNING 2 Be sure shroud and covers are secured before operation. A loose shroud or cover could move and cause loss of control.
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U8HV10E0.book Page 64 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 1. Shroud stay 2. Fit the projections on the side cover into the slots as shown. 3. 4. Tighten the fasteners. Install the shroud. Left and right side covers To remove a side cover 1. Remove the shroud. (See the above procedure.) 2. Loosen the fasteners, pull outward on the areas shown, and then slide the side cover forward to remove it. 1 2 Top cover (RS90P / RS90PLT) 1. Fastener 2.
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U8HV10E0.book Page 65 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 3. Remove the screws, and then remove the cable guide. 2 To install the top cover 1. Connect the main switch coupler. 2. Place the top cover in the original position, making sure to fit the projections on the cover into the slots in the headlight unit. 1 1 1. Screw 2. Cable guide 4. Loosen the quick fastener screws. 1. Top cover 3. 4. Tighten the quick fastener screws.
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U8HV10E0.book Page 66 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment When installing the shroud and covers, be sure to tighten the fasteners securely. ● Top cover (RST90PGT) To remove the top cover 1. Remove the shroud and the left side cover. (See the above procedures.) 2. Disconnect the auxiliary DC jack coupler. 1 1. Windshield stay rubber cover 5. 6. Loosen the quick fastener screws. Lift up the rear of the top cover, disconnect the main switch coupler, and then remove the cover.
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U8HV10E0.book Page 67 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Shroud To open the shroud Unhook the shroud latches, and then slowly raise the shroud forward until it stops. 1 2 3. 4. 5. 6. 7. Tighten the quick fastener screws. Place the windshield stay rubber covers in their original position. Pass the brake hose, throttle cable, parking brake cable and wire harness through the cable guide, place the cable guide in the original position, and then install the screws.
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U8HV10E0.book Page 68 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment To install the right side cover 1. Place the right side cover in the original position, and then tighten the bolts and screws. 2. Close the shroud. Specified spark plug: Manufacturer: NGK Model: CR8E ECS01040 NOTICE ● ● Make sure that all cables, leads, and hoses are routed properly before closing the shroud and installing the right side cover.
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U8HV10E0.book Page 69 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Spark plug gap: 0.7–0.8 mm (0.028–0.031 in) When installing the spark plug, always clean the gasket surface. Wipe off any grime from the threads and tighten the spark plug to the specified torque. Spark plug tightening torque: 13 Nm (1.3 m·kgf, 9.4 ft·lbf) ECS00382 NOTICE Make sure that the spark plug caps are securely installed. Otherwise the spark plug caps could be damaged due to engine vibration.
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U8HV10E0.book Page 70 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 5. 6. Loosen the locknut. To increase the throttle lever free play, turn the adjusting bolt in direction (a). To decrease the throttle lever free play, turn the adjusting bolt in direction (b). 1 2 1 (a) 2 (b) 1. Slot 2. Projection 9. Fit the weatherstrip on the headlight unit into the recess in the top of the air filter case cover. 3 1 1. Weatherstrip 1. Locknut 2. Throttle lever free play adjusting bolt 3.
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U8HV10E0.book Page 71 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 2. 3. 4. Open the shroud. Loosen the locknut. To increase the throttle lever free play, turn the adjusting bolt in direction (a). To decrease the throttle lever free play, turn the adjusting bolt in direction (b). 2 1 (b) 2 (a) 1. Headlight unit bolt 2. Windshield stay bolt 4. 1 3 1. Locknut 2. Throttle lever free play adjusting bolt 3.
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U8HV10E0.book Page 72 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 1 (b) (a) 2 3 1 1. Locknut 2. Throttle lever free play adjusting bolt 3. Throttle lever free play Throttle lever free play: 2.0–3.0 mm (0.08–0.12 in) 7. 8. Tighten the locknut. Install the headlight unit, making sure to fit the slots on its bottom onto the projections on its stay. 1. Weatherstrip 10. Install the headlight unit bolts and windshield stay bolts, and then tighten them to their specified torques.
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U8HV10E0.book Page 73 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Check the T.O.R.S. for proper operation. 1. Start the engine. TIP Refer to the “Starting the engine” section on page 48. 2. Hold the pivot point of the throttle lever away from the throttle switch by putting your thumb (above) and forefinger (below) between the throttle lever pivot and the engine stop switch housing. While holding the pivot point as described above, squeeze the throttle lever gradually. 1.
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U8HV10E0.book Page 74 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RS90P / RS90PLT 1. 2. 3. Place the snowmobile on a level surface and apply the parking brake. Remove the shroud, the left and right side covers, and the top cover. (See page 63 for removal procedures.) Remove the headlight unit bolt on each side of the snowmobile. 1 1 1. Air filter case cover fastener 1 6. Lift up the air filter element frame and check the air filter element.
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U8HV10E0.book Page 75 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 8. Install the headlight unit, making sure to fit the slots on its bottom onto the projections on its stay. 3. Remove the air filter case cover by unhooking the case fastener and the case cover fasteners. 2 1 1 2 1. Slot 2. Projection 9. 1. Air filter case fastener 2. Air filter case cover fastener Fit the weatherstrip on the headlight unit into the recess in the top of the air filter case cover. 4.
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U8HV10E0.book Page 76 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 5. 6. 7. Place the air filter element frame in the original position. Install the air filter case cover and attach the air filter case by hooking all the fasteners. Close the shroud. 1 RST90PGT 1. 2. 3. Place the snowmobile on a level surface and apply the parking brake. Remove the shroud and the top cover. (See page 63 for removal procedures.
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U8HV10E0.book Page 77 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 10. Install the headlight unit bolts and windshield stay bolts, and then tighten them to their specified torques. Tightening torques: Headlight unit bolt: 3.0 Nm (0.30 m·kgf, 2.2 ft·lbf) Windshield stay bolt: 14 Nm (1.4 m·kgf, 10 ft·lbf) 11. Install the top cover and the shroud. 7. 8. Place the air filter element frame in the original position, and then install the air filter case cover by hooking the fasteners.
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U8HV10E0.book Page 78 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Remember: Less air at higher altitude means there is less horsepower available, even with the optimal air/fuel ratio. Expect acceleration and top speed to be reduced at higher altitudes. To overcome operating with less power at high altitudes, your snowmobile may also require different settings for the drive chain gears and V-belt clutch to avoid poor performance and rapid wear.
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U8HV10E0.book Page 79 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 3. 4. Remove the shroud and the right side cover (RS90P / RS90PLT / RST90PGT), or open the shroud (RST90). [See page 63 (RS90P / RS90PLT / RST90PGT) or page 67 (RST90) for the procedures.] Disconnect the oil level gauge coupler. NOTICE: Disconnect the oil level gauge coupler before removing the oil filler cap, otherwise the cable could twist and break. [ECS00452] RS90P / RS90PLT / RST90PGT 1. Oil filler cap 2.
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U8HV10E0.book Page 80 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 6. 7. 8. 9. If the engine oil is below the “L” level mark, add sufficient oil of the recommended type to raise it to the “H” level mark. (See page 123 for the recommended oil.) NOTICE: When adding the engine oil, be careful not to fill above the “H” level mark on the dipstick. Use only the recommended oil. (See page 123.) Make sure that no foreign material enters the engine oil tank.
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U8HV10E0.book Page 81 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RS90P / RS90PLT / RST90PGT RST90 1 2 1. Cylinder head cap 1. Oil level gauge coupler 2. Oil filler cap RST90PGT RST90 1 1. Cylinder head cap 1. Oil level gauge coupler 2. Oil filler cap 8. RS90P / RS90PLT / RST90PGT Remove the oil filler cap and the cylinder head cap, and then remove the engine oil drain bolt and its gasket to drain the oil from the oil tank. 2 RS90P / RS90PLT 1 1 1.
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U8HV10E0.book Page 82 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RST90 2 1 1 1. Oil filter cartridge 1. Engine oil drain bolt (oil tank) 2. Gasket TIP 9. Place an oil pan under the engine to collect the used oil. 10. Remove the engine oil drain bolt and its gasket to drain the oil from the crankcase. An oil filter wrench is available at a Yamaha dealer. 12. Apply a thin coat of engine oil to the Oring of the new oil filter cartridge. 2 3 1 1.
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U8HV10E0.book Page 83 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Tightening torques: Engine oil drain bolt (crankcase): 10 Nm (1.0 m·kgf, 7.2 ft·lbf) Engine oil drain bolt (oil tank): 16 Nm (1.6 m·kgf, 12 ft·lbf) RST90 15. Add 2.0 L (2.11 US qt, 1.76 Imp.qt) of the recommended engine oil to the oil tank, and then install and tighten the oil filler cap and the cylinder head cap. Recommended engine oil: See page 123. 1. “H” level mark 2. “L” level mark 16.
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U8HV10E0.book Page 84 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment the engine off and make sure that the engine oil drain bolts, the cylinder head cap, and the oil filler cap are installed correctly. 20. Turn the engine off, and then connect the oil level gauge coupler. NOTICE: 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.
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U8HV10E0.book Page 85 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RST90PGT 1 2 1 1. Coolant reservoir cap 1. Coolant recovery tank 2. “COLD LEVEL” mark RS90P / RS90PLT To check the coolant level 4. 1. Bleeding the cooling system 2. 3. Place the snowmobile on a level surface and apply the parking brake. Remove the top cover and the right side cover. (See page 63 for removal procedures.) Check the coolant level in the coolant recovery tank when the engine is cold.
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U8HV10E0.book Page 86 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment TIP 2 1 If you find any leaks, consult a Yamaha dealer. 7. 8. 1. Coolant reservoir cap 2. Coolant recovery tank cap 4. Remove the coolant recovery tank cap, add the recommended coolant until it reaches the “COLD LEVEL” mark, and then install the cap. RST90 / RST90PGT To check the coolant level 1. 2. 3.
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U8HV10E0.book Page 87 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 2. RST90 3. Remove the shroud, the right side cover, and the top cover (RST90PGT), or open the shroud (RST90). [See page 63 (RST90PGT) or page 67 (RST90) for the procedures.] Remove the coolant reservoir cap and add coolant until it reaches the “COLD LEVEL” mark. RST90 1. “COLD LEVEL” mark RST90PGT 1 1. “COLD LEVEL” mark 2. Coolant reservoir cap RST90PGT 1. “COLD LEVEL” mark 4.
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U8HV10E0.book Page 88 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RST90 7. 8. Install the coolant reservoir cap. Install the top cover, the right side cover, and the shroud (RST90PGT), or close the shroud (RST90). ESU13913 V-belt EWS00402 WARNING ● RST90PGT ● Coming in contact with the rotating Vbelt or clutch parts can cause severe injury or death. Never run the engine with the drive guard removed.
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U8HV10E0.book Page 89 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 2. 3. 1. V-belt wear limit Remove the shroud and the left side cover (RS90P / RS90PLT / RST90PGT), or open the shroud (RST90), and then remove the drive guard. (See page 28 for drive guard removal procedures.) Remove the screws and the bolts, and then pull the left lower cover outward to remove it (RS90P / RS90PLT / RST90PGT). RS90P / RS90PLT / RST90PGT 3 New V-belt width: 34.5 mm (1.
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U8HV10E0.book Page 90 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Standard V-belt position: From 1.5 mm (0.06 in) above the edge of the secondary sheave assembly to 0.5 mm (0.02 in) below the edge 8. If the V-belt position is incorrect, adjust it by removing or adding a spacer on each V-belt position adjusting bolt. 1. V-belt 6. 7. Remove the V-belt from the secondary sheave assembly and primary sheave assembly.
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U8HV10E0.book Page 91 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 9. Tighten the V-belt position adjusting bolts. RS90P / RS90PLT / RST90PGT V-belt position adjusting bolt tightening torque: 10 Nm (1.0 m·kgf, 7.2 ft·lbf) 10. Install the V-belt over the primary sheave assembly. 11. Rotate the secondary sliding sheave clockwise and push it so that it separates from the secondary fixed sheave. 1 1. Left lower cover 14.
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U8HV10E0.book Page 92 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RST90 Recommended drive chain oil: SAE 75W or 80W API GL-3 Gear oil 5. Install the dipstick, making sure to align the notch in the dipstick handle with the projection on the drive chain housing. 1 1. Dipstick 4. Remove the dipstick and check that the oil is between the maximum and minimum level marks on the “REVERSE” side of the dipstick.
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U8HV10E0.book Page 93 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 1 2 Test the brake at a low speed when starting out to make sure that it is working properly. If the brake does not provide proper braking performance, inspect the brake for wear or brake fluid leakage. (See the following section for more details.) Checking the brake pads 1. Locknut 2. Chain tension adjusting bolt 4.
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U8HV10E0.book Page 94 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 1. Remove the shroud and the right side cover (RS90P / RS90PLT / RST90PGT), or open the shroud (RST90). [See page 63 (RS90P / RS90PLT / RST90PGT) or page 67 (RST90) for the procedures.] Check the parking brake pads for wear by measuring the thickness of the pads. If the parking brake pads reach the wear limit, ask a Yamaha dealer to replace them. 2. 1. 2. 3. 4. 5. Parking brake cable length: RS90P 43.0–46.5 mm (1.
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U8HV10E0.book Page 95 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Parking brake pad to brake disc clearance (a) + (b): 1.5–2.0 mm (0.059–0.079 in) 7. 8. Tighten the parking brake pad adjusting bolt locknut. Install the right side cover and the shroud (RS90P / RS90PLT / RST90PGT), or close the shroud (RST90). Checking the brake fluid level Before riding, check that the brake fluid is above the lower level. Check the brake fluid level with the top of the reservoir level.
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U8HV10E0.book Page 96 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment To measure the drive sprocket wear Measure the drive sprocket tooth width at the measuring line shown. If the tooth width is 13 mm (0.51 in) or less, replace the drive sprocket. 1 2 1 1. Ski wear limit 2. Ski runner 2 Ski runner wear limit: RS90P 6.0 mm (0.24 in) RS90PLT 6.0 mm (0.24 in) RST90 8.0 mm (0.31 in) RST90PGT 6.0 mm (0.24 in) Ski wear limit: RS90P 12.0 mm (0.47 in) RS90PLT 12.0 mm (0.47 in) RST90 24.
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U8HV10E0.book Page 97 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RST90 To adjust the handlebar height 1. Remove the handlebar cover. 1. Distance A 2. Distance B Ski toe-out (distance A – distance B): 0.0–15.0 mm (0.00–0.59 in) 1. Handlebar cover 2. Loosen the handlebar bolts. TIP Move the front tip of each ski fully inward before measuring or aligning. 3. If the alignment is not correct, consult a Yamaha dealer.
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U8HV10E0.book Page 98 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment ESU13702 Drive track and slide runners Drive track EWS00481 WARNING 1. Area where projection cannot be installed 4. Tighten the front handlebar bolts to the specified torque, and then tighten the rear handlebar bolts to the specified torque. NOTICE: Make sure each handlebar holder is installed so that the smaller gap is facing forward.
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U8HV10E0.book Page 99 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Adjust or replace if necessary. (See the following section for more details.) 1. Spring scale Checking the drive track alignment 1. Lift the rear of the snowmobile onto a suitable stand to raise the drive track off the ground. 2. Start the engine and rotate the drive track one or two turns. Stop the engine. 3. Check the drive track alignment with the slide runners. If the alignment is incorrect, adjust the drive track.
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U8HV10E0.book Page 100 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Shifted to right 1 1. Rear axle nut 2. Lift the rear of the snowmobile onto a suitable stand to raise the drive track off the ground. Start the engine and rotate the drive track one or two turns. Stop the engine. Loosen the locknut on the left and the right sides of the snowmobile, then align the drive track by turning the adjusting bolt on each side. 3. 4.
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U8HV10E0.book Page 101 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 6. Tighten the locknuts to their specified torque. Locknut tightening torque: 59 Nm (5.9 m·kgf, 43 ft·lbf) 7. 8. 9. Recheck alignment and deflection. If necessary, repeat steps 3 to 6 until the proper adjustment is achieved. Lower the snowmobile to the ground. Tighten the rear axle nut. Rear axle nut tightening torque: 75 Nm (7.5 m·kgf, 54 ft·lbf) 1. Left adjusting nut 2.
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U8HV10E0.book Page 102 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Shifted to left 1. 2. 3. 4. 5. 5. 1. Slide runner 2. Wear limit height Forward Gap Slide runner Drive track Slide metal Slide runner wear limit height: 10.5 mm (0.41 in) Adjust the drive track deflection to specification. NOTICE: The right and left adjusting nuts should be turned an equal amount.
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U8HV10E0.book Page 103 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 1 1 1. Lubrication point 1. Grease nipple RS90P 1 1. Throttle cable end 1. Grease nipple RS90PLT 1 1. Grease nipple 1.
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U8HV10E0.book Page 104 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RST90 1 1. Screw 2. Headlight access panel 1. Grease nipple 3. 4. RST90PGT Disconnect the headlight coupler. Remove the bulb holder cover. 1 1 2 1. Grease nipple ESU14181 Replacing a headlight bulb RS90P / RS90PLT 1. 2. 1. Headlight coupler 2. Bulb holder cover 5. Remove the top cover. (See page 63 for removal procedures.) Remove the screws, and then remove the headlight access panel.
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U8HV10E0.book Page 105 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment the glass part of the bulb or its life and illumination will be affected. If the glass is oil stained, thoroughly clean it with a cloth moistened with alcohol or lacquer thinner. [ECS00621] 1. Bulb holder 5. 1 1. Do not touch the glass part of the bulb. Bulb type: Halogen bulb 7. 8. 9. Install the bulb holder cover, and then connect the headlight coupler.
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U8HV10E0.book Page 106 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 6. Unhook the bulb holder, and then remove the burnt-out bulb. 2 1 1 1. Headlight unit bolt 2. Windshield stay bolt 3. Unhook the headlight unit as shown, then lift it up and move it forward, away from the handlebar. NOTICE: Be careful not to scratch the snowmobile when moving the headlight unit. [ECS00920] 1. Bulb holder 7. 1 1. Headlight unit 4. 5.
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U8HV10E0.book Page 107 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 2. 1 2 Use a Phillips screwdriver to turn the headlight beam adjusting screw and adjust the headlight beams. To lower the headlight beams, turn the headlight beam adjusting screw in direction (a). To raise the headlight beams, turn the headlight beam adjusting screw in direction (b). 1. Slot 2. Projection 10. Fit the weatherstrip on the headlight unit into the recess in the top of the air filter case cover.
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U8HV10E0.book Page 108 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment Batteries produce explosive gases. Keep sparks, flame, cigarettes, etc. away. Ventilate when charging or using in an enclosed space. Always shield your eyes when working near batteries. KEEP OUT OF THE REACH OF CHILDREN. 1. Phillips screwdriver 3. Close the shroud. ESU12290 Fittings and fasteners Check the tightness of the fittings and fasteners. Tighten in proper sequence and torque if necessary.
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U8HV10E0.book Page 109 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RST90PGT ESU14193 Replacing a fuse EWS00550 WARNING 2 Be sure to use the specified fuse. A wrong fuse could cause electrical system damage or A FIRE HAZARD. 1 ECS00631 NOTICE Be sure to turn the main switch to the off position and disconnect the negative battery lead to prevent accidental short-circuiting. 1. Headlight unit bolt 2. Windshield stay bolt 3.
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U8HV10E0.book Page 110 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 7. 2 1 Lift up the air filter case, disconnect the ISC (Idle Speed Control) unit inlet hose and cylinder head breather hose from the case, and then remove the case. 1 1. Air filter case fastener 2. Air temperature sensor coupler 5. 2 Loosen the joint clamp bolts. 1. Cylinder head breather hose 2. ISC (Idle Speed Control) unit inlet hose 1 8. Unhook the battery band, and then remove the battery cover. 1.
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U8HV10E0.book Page 111 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RS90P / RS90PLT 1 1 1. Negative battery lead 2 3 4 5 6 7 10. Replace the blown fuse with one of the proper amperage. 1 8 2 3 4 1. 2. 3. 4. Spare fuse Fuel injection system fuse Main fuse EPS fuse 1. 2. 3. 4. 5. 6. 7. 8.
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U8HV10E0.book Page 112 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RST90PGT 1 2 7 3 4 5 6 7 1. 2. 3. 4. 5. 6. 7. 112 Fuse box “IGN” (ignition) fuse “S/H” (helmet shield heater jack) fuse “HEAD” (headlight) fuse “SIG” (signaling system) fuse “DC” (auxiliary DC jack) fuse Spare fuse Specified fuses: Main fuse: 40.0 A EPS fuse: 40.0 A Fuel injection system fuse: 10.0 A Ignition fuse: 15.0 A Radiator fan fuse: RS90P 5.0 A RS90PLT 5.0 A Headlight fuse: 20.
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U8HV10E0.book Page 113 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment RST90 The main fuse is located under the air filter case. The fuse box, which contains the fuses for the individual circuits, is located behind the right side cover. 1. Open the shroud. 2. Remove the right side cover. (See page 63 for removal procedures.) 3. Unhook the air filter case fastener. 1 2 1. Slot 2. Projection 15.
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U8HV10E0.book Page 114 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 1. Oil tank breather hose clamp 2. Oil tank breather hose 6. Slide the crankcase breather hose clamp (crankcase side) up, and then disconnect the crankcase breather hose from the engine. 1. Crankcase breather hose clamp (crankcase side) 2. Crankcase breather hose 7.
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U8HV10E0.book Page 115 Monday, May 16, 2011 1:15 PM Periodic maintenance and adjustment 10. Connect the negative battery lead. 11. Install the air filter case by reversing the removal steps 3–7. NOTICE: Be sure to connect the breather hoses securely when installing the air filter case. 1 [ECS00641] TIP When installing the air filter case, connect the crankcase breather hose to the air filter case first, and then connect it to the engine. 2 3 7 4 5 12.
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U8HV10E0.book Page 116 Monday, May 16, 2011 1:15 PM Troubleshooting closed position. The T.O.R.S. is an important safety device; in the case of a malfunction, take the snowmobile to a Yamaha dealer immediately for repair. [EWS00561] ESU14163 Engine turns over but does not start 1. Fuel system No fuel supplied to combustion chamber • No fuel in tank: Supply fuel. ↓ • Clogged fuel line: Clean fuel line. ↓ • Clogged injector (RS90P / RS90PLT / RST90PGT): Ask a Yamaha dealer to check.
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U8HV10E0.book Page 117 Monday, May 16, 2011 1:15 PM Troubleshooting 3. Compression ● Insufficient • Loose cylinder head nuts: Tighten nuts properly. ↓ • Worn or damaged gasket: Replace gasket. ↓ • Worn or damaged piston and cylinder: Ask a Yamaha dealer to check. Discharged battery If the battery is discharged, the engine can be started using a fully-charged 12-volt battery and jumper cables. Two connecting leads have been provided for jump-starting the snowmobile.
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U8HV10E0.book Page 118 Monday, May 16, 2011 1:15 PM Troubleshooting 4. Pull the red (+) connecting lead cover to expose the terminal through the slit in the cover, and then connect the red (+) jumper cable to the red (+) connecting lead. 8. 9. 10. 11. 12. 5. 6. 7. Connect the other end of the red (+) jumper cable to the positive (+) terminal of the booster battery. Connect the black (–) jumper cable to the negative (–) terminal of the booster battery.
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U8HV10E0.book Page 119 Monday, May 16, 2011 1:15 PM Troubleshooting ● ● Seized engine: Seizure is caused by poor lubrication, inadequate fuel, or an air leak. Ask a Yamaha dealer to check. RST90: “Hydrostatic lock” occurs when fuel has filled cylinders during transportation of vehicle: Remove spark plugs and turn engine over several times with ignition off to expel excess fuel. Ask a Yamaha dealer to check.
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U8HV10E0.book Page 120 Monday, May 16, 2011 1:15 PM Troubleshooting ● Worn or damaged drive track: Ask a Yamaha dealer to check.
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U8HV10E0.book Page 121 Monday, May 16, 2011 1:15 PM Storage ESU13940 Long-term storage requires some preventive procedures to guard against deterioration. make sure that it does not leave any marks. If the windshield is scratched, use a quality plastic polishing compound after washing. Cleaning Thoroughly clean the snowmobile, inside and out, to remove the corrosive salts and acids that can accumulate.
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U8HV10E0.book Page 122 Monday, May 16, 2011 1:15 PM Storage od is to remove the intake silencer (RS90P / RS90PLT / RST90PGT) or air filter case (RST90), and squirt oil into the throttle bodies (RS90P / RS90PLT / RST90PGT) or carburetor throats (RST90) while the engine is running. NOTICE: Do not simply start the engine when in storage, starting the engine occasionally during the storage period can cause more harm than good.
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U8HV10E0.book Page 123 Monday, May 16, 2011 1:15 PM Specifications ESU1246C Dimensions: Overall length: RS90P 2815 mm (110.8 in) RS90PLT 3015 mm (118.7 in) RST90 3135 mm (123.4 in) RST90PGT 3195 mm (125.8 in) Overall width: RS90P 1200 mm (47.2 in) RS90PLT 1200 mm (47.2 in) RST90 1225 mm (48.2 in) RST90PGT 1200 mm (47.2 in) Overall height: RS90P 1210 mm (47.6 in) RS90PLT 1210 mm (47.6 in) RST90 1330 mm (52.4 in) RST90PGT 1380 mm (54.3 in) Weight: With oil and fuel: RS90P 304.0 kg (670 lb) RS90PLT 313.
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U8HV10E0.book Page 124 Monday, May 16, 2011 1:15 PM Specifications Overall reduction ratio: RS90P 6.02–1.58 : 1 RS90PLT 6.18–1.63 : 1 RST90 6.74–1.77 : 1 RST90PGT 6.44–1.70 : 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) Engagement speed (Subject to change according to elevation settings.): RS90P 3100–3500 r/min RS90PLT 3100–3500 r/min RST90 3000–3400 r/min RST90PGT 2900–3300 r/min Shift speed [Subject to change according to elevation settings.
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U8HV10E0.
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U8HV10E0.book Page 126 Monday, May 16, 2011 1:15 PM Consumer information ESU12481 Identification number records RS90P / RS90PLT / RST90PGT Record the frame serial number, engine serial number (Primary ID), and key identification number in the spaces provided for assistance when ordering spare parts from a Yamaha dealer. Also, record and keep the ID numbers in a separate place in case the snowmobile is stolen.
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U8HV10E0.book Page 127 Monday, May 16, 2011 1:15 PM Consumer information RST90PGT ESU13461 Vehicle Emission Control Information label RS90P / RS90PLT 1 1 1. Vehicle Emission Control Information label The Vehicle Emission Control Information label is affixed at the location in the illustration. This label shows specifications related to exhaust emissions as required by federal law, state law and Environment Canada. 1. Vehicle Emission Control Information label RST90 1 1.
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U8HV10E0.book Page 128 Monday, May 16, 2011 1:15 PM Consumer information ESU12500 YAMAHA MOTOR CORPORATION, U.S.A. SNOWMOBILE LIMITED WARRANTY Yamaha Motor Corporation, U.S.A. hereby warrants that new Yamaha snowmobiles purchased from an authorized Yamaha snowmobile dealer in the continental United States will be free from defects in material and workmanship for the period of time stated herein, subject to certain stated limitations. WARRANTY PERIOD: 1.
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U8HV10E0.book Page 129 Monday, May 16, 2011 1:15 PM Consumer information YAMAHA MOTOR CORPORATION, U.S.A. MAKES NO OTHER WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE OBLIGATIONS AND TIME LIMITS STATED IN THIS WARRANTY ARE HEREBY DISCLAIMED BY YAMAHA MOTOR CORPORATION, U.S.A. AND EXCLUDED FROM THIS WARRANTY.
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U8HV10E0.book Page 130 Monday, May 16, 2011 1:15 PM Consumer information Q. What responsibility does my dealer have under this warranty? A. Each Yamaha snowmobile dealer is expected to: 1. Completely set up every new machine before sale. 2. Explain the operation, maintenance, and warranty requirements to your satisfaction at the time of sale, and upon your request at any later date. 3. In addition, each Yamaha snowmobile dealer is held responsible for his setup, service and warranty repair work. Q.
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U8HV10E0.book Page 131 Monday, May 16, 2011 1:15 PM Consumer information ESU12511 YAMAHA EXTENDED SERVICE (Y.E.S.
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U8HV10E0.book Page 1 Monday, May 16, 2011 1:15 PM Index A Air filter, checking..................................... 73 Auxiliary DC jack ...................................... 25 B Backrest (RST90 / RST90PGT) ............... 31 Battery.................................................... 108 Brake and parking brake .......................... 93 Brake lever ............................................... 26 Break-in.................................................... 50 C Carburetors (RST90).................
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U8HV10E0.book Page 2 Monday, May 16, 2011 1:15 PM Index Shroud and right side cover, opening and closing, removing and installing (RST90) .......... 67 Skis and ski runners................................. 96 Spark plugs, checking .............................. 68 Specifications ......................................... 123 Starter (choke) lever (RST90) .................. 12 Starting the engine ................................... 48 Steering system .......................................
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U8HV10E0.book Page 1 Monday, May 16, 2011 1:15 PM ESU14240 For your best ownership experience, think Genuine Yamaha! Genuine Yamaha Parts – Genuine Yamaha replacement parts are the exact same parts as the ones originally equipped on your vehicle, providing you with the performance and durability you have come to expect.
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ESU12520 PRINTED IN JAPAN 2011.05-0.