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Yamaha RST90L Owner's Manual

Summary of RST90L

  • Page 1

    Owner’s manual snowmobile rst90l 8et-28199-11 lit-12628-02-48 printed on recycled paper printed in japan 2005.06-0.7 ×1 cr (e) yamaha motor co., ltd..

  • Page 3: Machine Identification

    Esu00286 1- machine identification identification number records a. Frame number: cz-01e b. Engine number (primary id): cz-01e c. Key number: cz-01e record the frame number, engine number (primary id), and key number in the spaces provided for assistance when ordering spare parts from a yamaha deale...

  • Page 4: Introduction

    Esu00011 2- introduction 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 thes...

  • Page 5: Warning

    Warning @ 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...

  • Page 6: Contents

    Esu00003 contents yamaha motor corporation, u.S.A. Snowmobile limited warranty .......................................1-1 yamaha extended service (y.E.S.) ...............................................1-4 location of the important labels..............................................2-1 safety infor...

  • Page 7

    Operation on surfaces other than snow or ice ......................................7-6 maximizing drive track life ...............7-7 driving .............................................7-8 stopping the engine.........................7-9 transporting ..................................7-10 periodic ...

  • Page 8

    1-1 esu05070 1- yamaha motor corporation, u.S.A. Snowmobile limited warranty cw-07e yamaha motor corporation, u.S.A. Hereby warrants that new yamaha snowmobiles purchased from an autho- rized yamaha snowmobile dealer in the continental united states will be free from defects in material and workman-...

  • Page 9

    1-2 cw-08e yamaha motor corporation, u.S.A. Makes no other warranty of any kind, expressed or implied. All implied war- ranties of merchantability and fit- ness for a particular purpose which exceed the obligations and time lim- its stated in this warranty are hereby disclaimed by yamaha motor corpo...

  • Page 10

    1-3 cw-09e 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 req...

  • Page 11

    1-4 esu04280 yamaha extended service (y.E.S.) cw-06e e_8et.Book page 4 wednesday, june 8, 2005 9:30 am.

  • Page 12: Location of The Important

    2-1 esu04050 2- location 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 2 3 4 8dm-77761-e0 8es-14488-00 caution attention severe engine damage can result from oil lo...

  • Page 13

    2-2 note: @ the following suspension adjustment charts are included with the owner’s manual. @ e_8et.Book page 2 wednesday, june 8, 2005 9:30 am.

  • Page 14: Safety Information

    3-1 esu02970 3- safety information 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 operating 1. Read the owner’s manual and all labels before oper- ating this snowmobile. Become familiar ...

  • Page 15

    3-2 7. Handle fuel with care; it is highly flammable. ● never add fuel when the engine is running or hot. Allow the engine to cool for several minutes after running. ● use an approved fuel container. ● fill the fuel tank outdoors with extreme care. Never remove the fuel cap indoors. Never fill the f...

  • Page 16

    3-3 3. This snowmobile is not designed for use on surfaces other than snow or ice. Use on dirt, sand, grass, rocks, or bare pavement may cause loss of control and may damage the snowmobile. 4. Avoid operating on glare ice, or on snow which has a lot of dirt or sand mixed in. Operation under such con...

  • Page 17: Description

    4-1 esu00012 4- description 1 windshield 2 steering handlebar 3 seat 4 passenger grip warmer switch 5 large solo touring storage area 6 rear carrier 7 frame 8 slide rail suspension 9 drive track 0 skis a headlights b shroud c storage compartment e_8et.Book page 1 wednesday, june 8, 2005 9:30 am.

  • Page 18

    4-2 d side mirror e tail/brake lights f snow flap g brake lever h parking brake lever i grip warmer adjustment switch j headlight beam switch k engine stop switch l thumb warmer adjustment switch m throttle lever n shift lever o shroud latch p main switch q auxiliary dc jack r starter lever s tachom...

  • Page 19: Control Functions

    5-1 esu00013 5- control functions esu00362 main switch the main switch controls the following items. 1 “off” the ignition circuit is switched off. The key can be removed only in this position. 2 “on” the ignition circuit is switched on. 3 “start” the starting circuit is switched on. The starter moto...

  • Page 20: Warning

    5-2 esu00201 starter lever (choke) use the starter lever (choke) when starting and warming up a cold engine. 1 starter lever (choke) 2 when starting a cold engine. 3 warming up 4 when the engine is warm. Note: @ refer the “starting the engine” section for proper opera- tion. @ esu00022 throttle leve...

  • Page 21: Warning

    5-3 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...

  • Page 22

    5-4 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 ...

  • Page 23

    5-5 esu03824 fuel meter and grip/thumb warmer level indica- tor the fuel meter and grip/thumb warmer level indicator have eight segments 1 which show the amount of fuel remaining in the fuel tank, the grip warmer level, or the thumb warmer level. Fuel meter as the fuel level decreases in the fuel ta...

  • Page 24

    5-6 esu04260 fuel level warning indicator the fuel level warning indicator indicates a malfunction- ing sensor, disconnected coupler, broken lead, or short circuit when detected by the self-diagnosis device of the snowmobile. The fuel level warning indicator 1, warning light 2, and all segments of t...

  • Page 25: Caution:

    5-7 esu04180 coolant temperature warning indicator if the engine overheats, the coolant temperature warning indicator 1 and the warning light 2 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 pa...

  • Page 26: Caution:

    5-8 esu00031 engine stop switch the engine stop switch 1 is used to stop the engine in an emergency. Simply push 2 the stop switch to stop the engine. To start the engine, pull 3 the stop switch and proceed with starting the engine. (see page 7-1 for more details.) during the first few rides, practi...

  • Page 27: Warning

    5-9 esu00035 parking brake lever when parking the snowmobile or starting the engine, apply the parking brake by moving the brake lever 1 to the left. To release the parking brake, move the parking brake lever 1 to the right. È to apply the parking brake É to release the parking brake warning @ ● alw...

  • Page 28: Caution:

    5-10 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 the auxiliary dc jack is located in the front panel and can be used for accessories. Note: @ the auxiliary ...

  • Page 29: Caution:

    5-11 esu04290 passenger grip warmer switch the passenger grip warmer switch controls the electri- cally heated passenger grips. 1 passenger grip warmer switch 2 off 3 “hi” high 4 “lo” low esu04312 footrests the footrests can be installed in two locations to suit pas- senger preference. To change the...

  • Page 30: Caution:

    5-12 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. 1 shroud latch 2 shroud caution: @ make sure that all cables and wir...

  • Page 31: Caution:

    5-13 esu00053 v-belt holders keep a spare v-belt for emergency use by placing it into the v-belt holders provided. Caution: @ make sure that the v-belt is installed securely in the holders. @ esu04323 storage areas this snowmobile is equipped with a storage compart- ment, rear storage area, and rear...

  • Page 32: Caution:

    5-14 to remove the passenger seat and backrest 1. Pull the carrier lock lever 1 away from the carrier lock bracket, and then push it down to unlock the backrest 2 and the rear carrier 3. 2. Slide both the backrest and the rear carrier forward until they stop, and then remove them. 3. Remove the pass...

  • Page 33

    5-15 to install the passenger seat and backrest 1. Remove the rear carrier. (refer to steps 1–2 in the “to remove the passenger seat and backrest” sec- tion.) 2. Install the passenger seat, and then install the pas- senger seat lock knob. 3. Align the holes 1 in the backrest bracket with the bolts 2...

  • Page 34: Pre-Operation Checks

    6-1 esu00072 6- pre-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 ...

  • Page 35: Caution:

    6-2 caution: @ ● oxygenated fuels (gasohol) containing a maxi- mum 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 ...

  • Page 36: Caution:

    6-3 esu03441 engine oil level the engine oil level should be checked before each use. Caution: @ do not run the engine with too much or not enough oil in the oil tank. Oil could flow into the air filter case and the engine could be damaged. @ checking the engine oil level 1. Place the snowmobile on ...

  • Page 37: Warning

    6-4 6. Insert the oil level gauge/dipstick into the oil filler hole, and then tighten it securely. 7. Connect the oil level gauge coupler. Esu00086 coolant check the coolant level in the coolant reservoir when the engine is cold. If the coolant level is below the “cold level” mark, add soft water un...

  • Page 38: Warning

    6-5 esu00087 throttle lever check the throttle lever operation before starting the engine. The throttle lever must open smoothly and spring back to its home position when released. Esu00090 throttle override system (t.O.R.S.) check the t.O.R.S. For proper operation. Warning @ when checking t.O.R.S.:...

  • Page 39: Warning

    6-6 esu00091 brake 1. Brake lever 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 pages 8-18–8-19 for more details.) warning @ ● a soft, spongy ...

  • Page 40: Warning

    6-7 esu00093 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 surf...

  • Page 41: Warning

    6-8 esu00097 drive track check the drive track for deflection, wear, or damage. Adjust or replace if necessary. (see pages 8-28–8-30 for more details.) warning @ do not operate the snowmobile if you find damage to the drive track, or if it has been maladjusted. Drive track damage or failure could re...

  • Page 42: Caution:

    6-9 esu01020 skis and ski runners check the skis and ski runners for wear and damage. Replace if necessary. Caution: @ avoid scratching the skis when loading and unload- ing the snowmobile, when riding in areas with little or no snow, or on sharp edges such as concrete, curbs, etc. This will wear or...

  • Page 43

    6-10 esu03502 air filter always check that there is no snow under the air filter element frame. 1. Unhook the air filter case cover fasteners and the latch. 2. Remove the air filter case cover. 3. Lift up the air filter element frame and check the air filter element. If there is any snow on the air ...

  • Page 44

    6-11 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. The following should be carried at all times: ● tool kit ● flashlight ● roll o...

  • Page 45: Operation

    7-1 esu00112 7- operation 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. The starter motor cannot ...

  • Page 46: Caution:

    7-2 esu00380 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). For this reason, you should read the following material carefully. Since the engine is brand new, do not put an excessive load on it for the first 500 km (300 mi). T...

  • Page 47: Warning

    7-3 esu01272 riding your snowmobile getting to know your snowmobile a snowmobile is a rider active vehicle, and your riding position and your balance are the two basic factors of maneuvering your snowmobile. Riding your snowmobile requires skills acquired through practice over a period of time. Take...

  • Page 48: Warning

    7-4 turning for most snow surfaces, “body english” is the key to turning. As you approach a curve, slow down and begin to turn the handlebar in the desired direction. As you do so, put your weight on the running board to the inside of the turn and lean your upper body into the turn. This procedure s...

  • Page 49: Warning

    7-5 riding downhill when riding downhill, keep speed to a min- imum. It is important to apply just enough throttle to keep the clutch engaged while descending the hill. This will allow you to use engine compression to help slow the snowmobile, and to keep the snowmobile from rolling freely down the ...

  • Page 50: Warning

    7-6 hard-packed snow it can be more difficult to negotiate on hard-packed snow as both the skis and drive track do not have as much traction as when the snowmobile is operated on fresh snow. Avoid rapid acceleration, turning, and braking. Operation on surfaces other than snow or ice operation of you...

  • Page 51

    7-7 esu00251 maximizing drive track life recommendations track tension during initial break-in, the new drive track will tend to stretch quickly as the track settles. Be sure to correct the track tension and alignment frequently. (see pages 8-24–8-26 for adjustment procedures.) a loose track can sli...

  • Page 52: Warning

    7-8 esu04360 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. @ 1. To select the desired operating position, pull the shift lever out, sli...

  • Page 53: Warning

    7-9 2. Release the parking brake by moving the parking brake lever to the right. 3. Press the throttle lever slowly to move the snowmo- bile. 4. Turn the handlebar in the desired direction. 5. Squeeze the brake lever to stop the snowmobile. 6. Apply the parking brake by moving the parking brake leve...

  • Page 54

    7-10 esu00367 transporting when transporting your snowmobile on a trailer or in a truck, observe the following recommendations to help protect it from damage: ● make sure that the fuel level in the fuel tank is lower than the bottom of the carburetors. Otherwise, the vibration and bumps from the roa...

  • Page 55: Periodic Maintenance

    8-1 esu04960 8- periodic maintenance safety is an obligation of the owner. Periodic inspection, adjustment, and lubrication will keep your snowmobile in the safest and most efficient condition possible. The most impor- tant points of snowmobile inspection, adjustment, and lubrication are explained o...

  • Page 56

    8-2 esu04980 general maintenance and lubrication chart cd-32e ∗ fuel line check fuel hose for cracks or damage. Replace if necessary. ● ∗ idle speed check and adjust engine idle speed. ● ● 8-7 ∗ carburetors adjust synchronization of car- buretors. ● ● 8-7 adjust the jets. Whenever operating conditio...

  • Page 57

    8-3 drive guard check for cracks, bends or damage. ∗ replace if necessary. ● 5-12, 6-7 v-belt check for wear and damage. Replace if necessary. ● 6-7, 8-14–8-16 drive track and idler wheels check deflection, and for wear and damage. ∗ adjust/replace if necessary. ● 6-8, 8-24–8-26 slide runners check ...

  • Page 58

    8-4 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. ● replace the oil seals of the master cylinder and caliper cylinder every two years. ● replace the brake hose ever...

  • Page 59: Caution:

    8-5 esu03761 tool kit the owner’s tool kit has the tools which are sufficient for most periodic maintenance and minor repairs. A torque wrench is also necessary to properly tighten nuts and bolts. 1 tool kit caution: @ before starting the engine, make sure that the tool kit is properly seated in its...

  • Page 60: Caution:

    8-6 spark plugs are produced in several different thread lengths. The thread length or reach is the distance from the spark plug gasket seat to the end of the threaded portion. If the reach is too long, overheating and engine damage may result. If the reach is too short, spark plug fouling and poor ...

  • Page 61: Caution:

    8-7 esu03701 adjusting the engine idling speed caution: @ ● be sure to have a yamaha dealer make this adjustment. ● make sure that the throttle lever moves smoothly. ● make sure that the carburetor is synchronized first. @ 1. Start the engine and warm it up. Note: @ refer to the “starting the engine...

  • Page 62: Caution:

    8-8 esu04860 adjusting the high-altitude settings operating at high altitude reduces the performance of a gasoline engine about 3% for every 305 m (1,000 ft) of elevation. This is because there is less air as altitude increases. Less air means less oxygen available for com- bustion. Your snowmobile ...

  • Page 63: Warning

    8-9 esu04201 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. @ caution: @ ● do not ru...

  • Page 64

    8-10 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. 9. Install the new oil filter cartridge with an oil filter wrench, and then tighten i...

  • Page 65: Caution:

    8-11 13. Add sufficient oil of the recommended type to raise it to the “f” level mark on the oil level gauge/dipstick. (see page 6-3 for the checking procedure.) caution: @ ● when adding the engine oil, be careful not to fill above the “f” level mark on the oil level gauge/ dipstick. ● make sure tha...

  • Page 66: Warning

    8-12 esu03173 cooling system bleeding the cooling system warning @ ● do not remove the coolant reservoir cap when the engine is hot. Scalding hot fluid and steam may be blown out under pressure, which could cause serious injury. When the engine has cooled, place a thick rag or towel over the coolant...

  • Page 67

    8-13 replenishing the coolant 1. Remove the coolant reservoir cap and add coolant until it reaches the “cold level” mark. 1 “cold level” mark 2 coolant reservoir cap 2. Start the engine and add coolant until the coolant level does not go down, and then stop the engine. 3. Fill the coolant reservoir ...

  • Page 68: Warning

    8-14 esu01661 replacing the v-belt warning @ when installing the new v-belt, make sure it is posi- tioned 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 a. If not, the v-belt clutch engagement speed will be changed. The snowmobile may move un...

  • Page 69

    8-15 3. Pull 3 the v-belt up over the secondary fixed sheave. 4. Remove the v-belt from the secondary sheave assembly and primary sheave assembly. 5. Put the new v-belt back on the secondary sheave assembly only. Do not force the v-belt between the sheaves; the secondary sliding and fixed sheaves mu...

  • Page 70: Warning

    8-16 8. Install the v-belt over the primary sheave assembly. 9. Rotate the secondary sliding sheave clockwise 6 and push 7 it so that it separates from the secondary fixed sheave. 10. Install the v-belt 8 between the secondary sliding and secondary fixed sheaves. 11. Install the drive guard. Warning...

  • Page 71: Caution:

    8-17 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 È for models without reverse transmissions (not applicabl...

  • Page 72: Warning

    8-18 esu00174 checking the brake pads check the brake pads for wear. If the brake pads reach the wear limit, ask a yamaha dealer to replace them. 1 brake pad wear indicator esu00352 checking the parking brake pads check the parking brake pads for wear by measuring the thickness of the pads. If the p...

  • Page 73: Warning

    8-19 esu00180 checking the brake fluid level place the snowmobile on a level surface. Check that the brake fluid is above the lower level and replenish when necessary. 1 lower level warning @ be careful that water does not enter the master cylin- der when refilling. Water will significantly lower th...

  • Page 74: Caution:

    8-20 esu03042 adjusting the ski spring preload the spring preload can be adjusted by turning the spring preload adjuster 1. Cd-10e caution: @ the left and right ski spring preload must be set to the same setting. Uneven settings can cause poor handling and loss of stability. @ spring adjuster positi...

  • Page 75: Warning

    8-21 esu04351 adjusting the rear suspension spring preload the rear suspension is equipped with two shock absorb- ers and the spring preload for each shock absorber can be adjusted separately. One shock absorber is in the front 1 and the other is in the rear 2 of the rear suspen- sion assembly. The ...

  • Page 76: Caution:

    8-22 esu04221 adjusting the control rods the weight transfer can be adjusted by turning the con- trol rod adjusting nut 1. 1. Loosen the locknut 2 while holding the control rod adjusting nut. 2. Turn the adjusting nut in direction a to increase weight transfer or direction b to decrease weight trans...

  • Page 77: Caution:

    8-23 esu04342 adjusting the 2-up adjusting block spring force the spring force can be adjusted by changing the posi- tion of the 2-up adjusting blocks. Note: @ be sure to make this adjustment when there is no load (rider or cargo) on the snowmobile. @ 1. Install the special tools 1 and 2 included in...

  • Page 78: Warning

    8-24 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. ● when the rear ...

  • Page 79: Warning

    8-25 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. @ 1. Lift the rear of the snowmobile onto a suitable stan...

  • Page 80: Caution:

    8-26 caution: @ the right and left adjusters should be turned to an equal amount. @ 6. Recheck alignment and deflection. If necessary, repeat steps 3 to 5 until the proper adjustment is achieved. 7. Tighten the rear axle nut. Esu02001 aligning the skis 1. Turn the handlebar so the skis face straight...

  • Page 81: Caution:

    8-27 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. @ 4. Tighten the handlebar bolts and install the handlebar cover. Caution: @ make sure that the small gap ...

  • Page 82: Warning

    8-28 esu00371 lubrication lubricate the following points. 1 throttle cable end warning @ 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...

  • Page 83: Warning

    8-29 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. Remove the bulb. Warning @ keep flammable products and your hands away f...

  • Page 84: Warning

    8-30 esu00355 battery this snowmobile is equipped with a sealed-type (mf) battery, which does not require any maintenance. There is no need to check the electrolyte or to add distilled water. To charge the battery have a yamaha dealer charge the battery as soon as possible if it seems to have discha...

  • Page 85: Caution:

    8-31 1. Lift up the shroud. 2. Remove the right side cover 1. 3. Unhook the latch 2. 4. Loosen the clamp screws 3. 5. Slide the oil tank breather hose clamp 4 away from the air filter case, and then disconnect the oil tank breather hose 5. 6. Slide the crankcase breather hose clamp 6 up, and then di...

  • Page 86

    8-32 e spare fuses (20 a, 10 a, 15 a, 3 a) f spare main fuse 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: 3 a c“c/w” (carburetor warmer) fuse: 20 a d“ign” (ignition) fuse: 15 a e_8et.Book page 32 wednesday, june 8, 2...

  • Page 87: Troubleshooting

    9-1 esu04241 9- troubleshooting a. Engine turns over but does not start 1. Fuel system no fuel supplied to combustion cham- ber ● no fuel in tank ... Supply fuel. ● clogged fuel line ... Clean fuel line. ● clogged carburetor ... Clean carbure- tor. Fuel supplied to combustion chamber ● flooded engin...

  • Page 88: Caution:

    9-2 2. Open the shroud. 3. Remove the red (+) lead from the lead holder and move it away from the black (-) lead. Caution: @ be sure to connect the red (+) jumper cable to the red (+) lead and the black (-) jumper cable to the black (-) lead. Do not reverse the connections. @ 4. Pull the red (+) lea...

  • Page 89: Warning

    9-3 note: @ make sure that both the red (+) lead and the black (-) lead are seated securely in the lead holders. @ warning @ be sure to pull the lead covers back over the terminals completely. If the ter- minals are exposed, they could come into contact with the frame or a metal part of the snowmobi...

  • Page 90

    9-4 j. Engine does not upshift or down- shift properly or engages harshly 1. Worn or damaged v-belt ... Replace the v-belt or ask a yamaha dealer to inspect. 2. Incorrect v-belt clutch settings for alti- tude or conditions ... Ask a yamaha dealer to inspect. 3. Worn or sticking primary sheave assemb...

  • Page 91: Storage

    10-1 esu03594 10- storage long-term storage requires some preven- tive procedures to guard against deteriora- tion. 1. Cleaning thoroughly clean the snowmobile, inside and out, to remove the corrosive salts and acids that can accumulate. Use yamaha mud, grease, and engine cleaner, or an equivalent p...

  • Page 92: Caution:

    10-2 caution: @ ● always keep the battery charged. Storing a discharged battery can cause permanent battery damage. ● to charge a sealed-type (mf) battery, a special (constant-voltage) battery charger is required. Using a conven- tional battery charger will damage the battery. If you do not have acc...

  • Page 93: Specifications

    11-1 esu00228 11- specifications esu00229 dimensions cs-01e esu00230 engine cs-02e rst90 overall length 3,135 mm (123.4 in) overall width 1,225 mm ( 48.2 in) overall height 1,330 mm ( 52.4 in) dry weight 283 kg ( 624 lb) ski stance 1,086 mm ( 42.8 in) rst90 type liquid cooled 4-stroke, 12 valves cyl...

  • Page 94

    11-2 esu00231 chassis cs-03e rst90 drive track and suspension: track molded rubber, fiber glass rod reinforced width 381 mm (15.0 in) track deflection 30–35 mm (1.18–1.38 in)/ 100 n (10 kg, 22 lb) length on ground 985 mm (38.8 in) suspension type slide rail suspension drive sprocket quadruple polyet...

  • Page 95

    11-3 esu00232 electric cs-04e rst90 ignition system tci spark plug type · r · cr8e (ngk) gap 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 headlight bulb × quantity 12 v, 60/55 w × 2 tail/brake light bulb × quantity 12 v, 5/21 w × 2 ...

  • Page 96: Wiring Dia

    12-1 es u0023 3 1- wiring dia g ram off on hi lo off on st ar t lo off hi ru n st op close open g /b ch b g dg b l/ w g lg b y (3a) (20a) (10a) (20a)(20a) (15a) (black) p o/ r b /w l/ y w ch b /y br br /w ch w w w w w w w /r r w /g l/ w lg lg l/ w w /b g b o /b r /w r b (30a) g b y g b y g /y l g l ...

  • Page 97

    12-2 1 pi c k up co il 2 a.C . Mag neto 3 re ct if ie r/ reg u lat or 4 ma in s w itch 5 load control rela y 6 main fuse 7 star ter r e la y 8 star ter m o tor 9 batter y 0 en gine stop s witch a throttle s witch b c a rb uretor w a rm e r rel a y c c a rb uretor g roun d d c a rb uretor w a rm e r ...

  • Page 98: Owner’S Manual

    Owner’s manual snowmobile rst90l 8et-28199-11 lit-12628-02-48 printed on recycled paper printed in japan 2005.06-0.7 ×1 cr (e) yamaha motor co., ltd..