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Yamaha Vector RS90RX, Owner'S Manual

The Yamaha Vector RS90RX is a high-performance snowmobile designed for thrill-seekers and outdoor enthusiasts. Unlock the full potential of this powerful machine by downloading the comprehensive Owner's Manual. Get the manual for free at manualshive.com, ensuring you have all the necessary information to maximize your snowmobiling experience.

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Periodic maintenance

42

WARNING

EWS00090

●

Do not drive the snowmobile with the
shroud or covers unfastened or re-
moved.

●

Keep your body and clothing away from
rotating parts when servicing the snow-
mobile with the shroud or covers re-
moved.

●

Do not touch the hot muffler and engine
during or immediately after operation.

CAUTION:

ECS00370

Make sure that all cables, leads, etc., are
routed properly before installing the
shroud and covers.

NOTE:

When installing the shroud and covers, be
sure to tighten all fasteners securely.

ESU11780

Checking the spark plugs 

The spark plug is an important engine compo-
nent and is easy to inspect. The condition of
the spark plug can indicate the condition of
the engine.
Check the coloration on the white porcelain
insulator around the center electrode. The
ideal coloration at this point is a medium to a
light tan color for a snowmobile that is being
ridden normally. If a spark plug shows a dis-
tinctly different color, there could be some-
thing wrong with the engine. For example, a
very white center electrode porcelain color
could indicate an intake track air leak or car-
buretion problem for that cylinder. Do not at-
tempt to diagnose such problems yourself.
Instead, take the snowmobile to a Yamaha
dealer for inspection and possible repairs.

You should periodically remove and inspect
the spark plug because heat and deposits will
cause a spark plug to slowly break down and
erode. Consult a Yamaha dealer before
changing to a different type of spark plug.

Spark plugs are produced in several different
thread lengths. The thread length or reach is
the distance from the spark plug gasket seat
to the end of the threaded portion. If the reach
is too long, overheating and engine damage
may result. If the reach is too short, spark plug
fouling and poor performance may result. Al-
so, if the reach is too short, carbon will form on
the exposed threads resulting in combustion
chamber hot spots and thread damage. Al-
ways use a spark plug with the specified
reach.

Before installing any spark plug, measure the
electrode gap with a wire thickness gauge
and adjust to specification.

Specified spark plug:

Manufacturer:

NGK

Model:

CR8E

Spark plug reach:

19.0 mm (0.75 in)

1. Spark plug gap
2. Spark plug reach

U8GM10E0.book  Page 42  Friday, April 27, 2007  6:43 PM

Summary of Contents for Vector RS90RX

Page 1: ...OWNER S MANUAL RS90RX RS90GTX RS90GTAX RS90LTX RS90LTGTX 8GM 28199 10 LIT 12628 02 70 ...

Page 2: ...ESU10040 U8GM10E0 book Page 1 Friday April 27 2007 6 43 PM ...

Page 3: ...e operation or main tenance of your snowmobile please consult a Yamaha dealer To maintain the high quality and performance of this snowmobile it is important that you and your Yamaha dealer pay close attention to the recommended maintenance schedules and operating instructions contained within this manual RS90RX RS90GTX RS90GTAX RS90LTX RS90LTGTX OWNER S MANUAL 2007 by Yamaha Motor Corporation U S...

Page 4: ...e considered a per manent part of this snowmobile and should remain with the snowmobile when resold Particularly important information is distin guished in this manual by the following nota tions The Safety Alert Symbol means ATTEN TION BECOME ALERT YOUR SAFETY IS INVOLVED WARNING EWS00020 Failure to follow WARNING instructions could result in severe injury or death to the snowmobile operator a by...

Page 5: ...orage compartment 20 Fuel 20 Suspension 21 Pre operation checks 26 Pre operation check list 26 Operation 28 Starting the engine 28 Break in 28 Riding your snowmobile 29 Maximizing drive track life 32 Driving 33 Stopping the engine 34 Transporting 34 Periodic maintenance 36 Periodic maintenance chart for the emission control system 36 General maintenance and lubrication chart 38 Tool kit 40 Removin...

Page 6: ... fuse 65 Troubleshooting 68 Storage 72 Specifications 74 Consumer information 76 Identification number records 76 YAMAHA MOTOR CORPORATION U S A SNOWMOBILE LIMITED WARRANTY 77 YAMAHA EXTENDED SERVICE Y E S 80 U8GM10E0 book Page 2 Friday April 27 2007 6 43 PM ...

Page 7: ...owmobile is re duced by the influence of alcohol or drugs 5 For safety and proper care of the snow mobile always perform the pre operation checks on page 26 before starting the en gine Check the throttle brake and steer ing for proper operation every time before starting the engine Make sure that the throttle lever moves freely and it returns to the home position when it is released 6 Apply the pa...

Page 8: ...the snowmobile in or out of the building Open the outside doors exhaust fumes are dangerous 2 Be careful where you ride There may be obstacles hidden beneath the snow Stay on established trails to minimize your ex posure to hazards Ride slowly and cau tiously when you ride off of established trails Hitting a rock or stump or running into wires could cause an accident and injury 3 This snowmobile i...

Page 9: ... removal of original equipment may render your snowmobile unsafe for use that may cause severe personal injury Modifica tions may also make the snowmobile ille gal to use 4 Never store the snowmobile with fuel in the fuel tank inside a building where igni tion sources are present such as hot wa ter and space heaters an open flame sparks clothes dryers and the like Allow the engine to cool off befo...

Page 10: ...31 Location of the important labels Please read the following labels carefully before operating this snowmobile NOTE Maintain or replace safety and instruction labels as necessary U8GM10E0 book Page 4 Friday April 27 2007 6 43 PM ...

Page 11: ...Safety information 5 U8GM10E0 book Page 5 Friday April 27 2007 6 43 PM ...

Page 12: ...Safety information 6 NOTE The following suspension adjustment charts are included with the Owner s Manual U8GM10E0 book Page 6 Friday April 27 2007 6 43 PM ...

Page 13: ...ap 5 Throttle stop screw 6 Fuse box 7 Coolant reservoir 8 Tool kit 9 Storage compartment 10 Tail brake lights 11 Slide rail suspension 12 Rear suspension damping force remote ad justment dial 13 Drive track 14 V belt holder U8GM10E0 book Page 7 Friday April 27 2007 6 43 PM ...

Page 14: ... Shift lever 9 Main switch 10 Auxiliary DC jack RS90GT RS90GTA RS90LTGT 11 Starter choke lever 12 Tachometer 13 Low coolant temperature indicator light 14 High beam indicator light 15 Warning light 16 Self diagnosis warning indicator 17 Coolant temperature warning indicator 18 Fuel level warning indicator 19 Oil level warning indicator 20 Speedometer 21 Grip warmer indicator 22 Select reset button...

Page 15: ...arted ESU10300 Starter choke lever Use the starter choke lever when starting and warming up a cold engine NOTE Refer to the Starting the engine section on page 28 for proper operation ESU10310 Throttle lever Once the engine is running cleanly squeez ing the throttle lever will increase the engine speed and cause engagement of the drive system Regulate the speed of the snowmo bile by varying the th...

Page 16: ... operated without a problem before restarting the engine Be sure to use the specified spark plug and spark plug cap Otherwise the T O R S will not work properly If the carburetors or throttle cable malfunc tions during operation the T O R S will oper ate when the throttle lever is released The T O R S is designed to override the igni tion and limit the engine speed to less than the clutch engageme...

Page 17: ...pmeter which shows the distance trav eled since it was last set to zero warning indicators which show self diag nosis coolant temperature fuel level and oil level warnings a fuel meter which shows the fuel remain ing in the fuel tank a grip thumb warmer level indicator which shows the grip warmer level or the thumb warmer level After the engine is started the tachometer makes one sweep and the low...

Page 18: ...e 16 for headlight beam switch operation ESU10481 Low coolant temperature indi cator light The low coolant temperature indicator light comes on when the coolant temperature is low and informs the rider that the snowmobile should be warmed up After the engine is started warm it up until the indicator light goes off The snowmobile can be operated normally af ter the indicator light goes off NOTE Ope...

Page 19: ...ng indicator and the warning light come on refuel as soon as pos sible NOTE The snowmobile must be stopped on a level surface to obtain an accurate fuel meter read ing since the reading changes according to the movement and inclination of the snowmo bile Grip thumb warmer level indicator When the grip warmer adjustment switch is pressed the grip warmer indicator comes on and the display switches t...

Page 20: ...arning light and all segments of the fuel meter warn the rider of the above problems by flashing con tinuously When this occurs have a Yamaha dealer in spect the snowmobile as soon as possible ESU10460 Oil level warning indicator The oil level warning indicator and the warn ing light come on when the engine oil level is low If the oil level warning indicator and the warn ing light come on place th...

Page 21: ...icator and warning light flash continuously and an error code is displayed during operation there may be some problem with an electrical circuit couplers etc Stop the engine and allow it to cool off Then check that the electrical circuits couplers etc in the engine compart ment are connected properly If the self diagnosis warning indicator warning light and an error code flash af ter the engine ha...

Page 22: ...ly To raise the temperature press the respec tive switch to HI To lower the temperature press the switch to LO ESU10690 Auxiliary DC jack RS90GT RS90GTA RS90LTGT The auxiliary DC jack is located in the front panel and can be used for accessories NOTE The auxiliary DC jack cannot be used if the engine is not running To use the auxiliary DC jack 1 Start the engine 2 Open the auxiliary DC jack cap an...

Page 23: ...ystem Squeeze the brake lever towards the handle bar grip to stop the snowmobile NOTE When the brake lever is operated the brake light will illuminate CAUTION ECS00060 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 RS90GT RS90GTA RS90LTGT The brake lever is equipped with ...

Page 24: ...e parking brake before at tempting to start the engine Never run the snowmobile with the park ing brake applied This may overheat the brake disc and reduce braking ability ESU10590 Shift lever The shift lever is used to put the snowmobile into forward or reverse After coming to a complete stop pull the shift lever out slide it to FWD or to REV until it stops and then release it 1 Locknut 2 Adjusti...

Page 25: ...force See page 24 for adjustment procedures ESU10720 Shroud and covers Securely fasten the shroud and covers before operating the snowmobile See page 40 for removal and installation procedures WARNING EWS00090 Do not drive the snowmobile with the shroud or covers unfastened or re moved 1 Pull out 2 Slide to REV reverse 3 Release 1 Rear suspension damping force remote ad justment dial 1 Shroud 2 Ri...

Page 26: ...ed securely before operating the snowmobile Never run the engine with the V belt or drive guard removed ESU10760 V belt holders Keep a spare V belt for emergency use by placing it into the V belt holders provided CAUTION ECS00180 Make sure that the V belt is installed se curely in the holders ESU10810 Storage compartment Open the storage compartment to store the tool kit spare parts or other small...

Page 27: ...hat snow or ice does not en ter the fuel tank when refueling Do not use alcohol deicers or water ab sorbing additives with oxygenated fuel The fuel tank should be filled with straight gasoline as specified ESU10870 Suspension The suspension can be adjusted to suit rider preference A softer setting for example may provide greater rider comfort while a harder setting may allow more precise handling ...

Page 28: ...settings Uneven settings can cause poor handling and loss of stability Compression damping force The compression damping force of each ski shock absorber can be adjusted by turning the compression damping force adjusting knob To increase the compression damping force turn the adjusting knob in direction a To de crease the compression damping force turn the adjusting knob in direction b 1 Spring pr...

Page 29: ... ing ring on the shock absorber 1 Compression damping force adjusting knob Compression damping setting Minimum soft 12 click s in direction b Standard 7 click s in direction b Maximum hard 2 click s in direction b With the adjusting knob fully turned in direction a 1 Rebound damping force adjusting knob Rebound damping setting Minimum soft 20 click s in direction b Standard 12 click s in direction...

Page 30: ...d damping force turn the adjusting dial in direction b ESU11050 Adjusting the control rod The weight transfer can be adjusted by turn ing the control rod adjuster or adjusting nut 1 Loosen the locknut 2 Turn the control rod adjuster in direction a to increase weight transfer or direction b to decrease weight transfer WARNING EWS00180 Never adjust the control rod beyond the range of the scale on th...

Page 31: ...ing the special wrench make sure that it is situated at a right angle to the control rod and that it is tightly fitted to the locknut or the control rod adjuster 1 Special wrench 2 Adjuster length 3 Rim 4 Scale range Locknut tightening torque 35 Nm 3 5 m kgf 25 ft lb U8GM10E0 book Page 25 Friday April 27 2007 6 43 PM ...

Page 32: ...efore operating the snowmobile ESU11080 Pre operation check list ITEM CHECKS PAGE Fuel Check fuel level Refuel if necessary Check fuel line for leakage 20 Engine oil Check oil level in engine If necessary add recommended oil to specified level Check vehicle for oil leakage 47 Coolant Check coolant level Add if necessary 50 V belt Check for wear and damage Replace if necessary 52 Drive guard Make s...

Page 33: ...amaha dealer replace track 59 Slide runners Check for wear and damage If necessary have Yamaha dealer replace slide runners 59 Steering Check for excessive free play 59 Lights signals and switch es Check operation Correct if necessary 16 15 63 64 Throttle lever Make sure that operation is smooth and spring back to its home position when released 9 Throttle override system T O R S Check the T O R S...

Page 34: ...arter choke lever is returned to the closed po sition CAUTION ECS00330 Release the switch immediately after the engine starts If the engine fails to start release the switch wait a few seconds then try again Each attempt should be as short as possible to preserve the battery Do not crank the engine more than 10 sec onds on any one attempt ESU11310 Break in There is never a more important period in...

Page 35: ...ease read all warning and caution labels on your snowmobile Also read the Snowmobil er s Safety Handbook that is supplied with your snowmobile Learning to ride your snowmobile Before you ride always perform the pre oper ation checks listed on page 26 The short time spent checking the condition of the snowmo bile will be rewarded with added safety and a more reliable snowmobile Always wear the prop...

Page 36: ...urn 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 snow mobile to tip If your snowmobile begins to tip while turning lean more into the turn to regain balance If necessary gradually let off on the throttle or steer to the outside of the turn ...

Page 37: ...track to lock causing a loss of control Traversing a slope WARNING EWS00250 Traversing slopes is not recommended for a novice snowmobiler Traversing a slope requires you to properly position your weight to maintain proper bal ance As you travel across the slope lean your body to position your weight towards the uphill side A recommended riding position is to kneel with the knee of your downhill le...

Page 38: ...slide runners and the slide metal In the absence of lubrica tion the slide runners will rapidly wear and in severe cases literally melt away and the drive track will be subject to damage or failure Also traction aids such as studs cleats etc may cause further track damage or failure WARNING EWS00280 Drive track damage or failure could result in loss of braking ability and snowmobile control which ...

Page 39: ...possible damage consult your stud manufacturer for installation and stud pattern recommendations Yamaha does not recommend track stud ding ESU11390 Driving WARNING EWS00300 Be sure to read the SAFETY INFORMA TION section on page 1 and the Riding your snowmobile section on page 29 carefully before operating the snowmo bile NOTE Make sure that the engine is warmed up enough before riding WARNING EWS...

Page 40: ...owmobile 6 Apply the parking brake by moving the parking brake lever to the left ESU11410 Stopping the engine Turn the main switch to the off position to stop the engine WARNING EWS00330 Push down the engine stop switch to stop the engine in an emergency Make sure that the key is removed from the main switch whenever the operator leaves the snowmobile to prevent acci dental starting ESU11420 Trans...

Page 41: ... the trip takes longer than 30 minutes 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 in the shroud and also help protect the snowmobile against damage from debris on the road If transporting the snowmobile in an open trailer...

Page 42: ...NCTION TO ENSURE CLEANER AIR BUT ARE ALSO VITAL TO PROPER EN GINE OPERATION AND MAXIMUM PERFORMANCE IN THE FOLLOWING PERIODIC MAINTENANCE CHARTS THE SERVICES RELATED TO EMISSION CONTROL ARE GROUPED SEPARATELY THESE SERVICES REQUIRE SPECIALIZED DATA KNOWL EDGE AND EQUIPMENT YAMAHA DEALERS ARE TRAINED AND EQUIPPED TO PER FORM THESE PARTICULAR SERVICES ESU11460 Periodic maintenance chart for the emis...

Page 43: ...ronization Adjust the jets Whenever operating condition elevation tem perature is changed 46 Exhaust system Check for leakage Tighten or replace gasket if necessary ITEM REMARKS INITIAL EVERY PAGE 1 month or 800 km 500 mi 40 hr Seasonally or 4000 km 2500 mi 200 hr U8GM10E0 book Page 37 Friday April 27 2007 6 43 PM ...

Page 44: ...imary Inspect ramp shoes bushings for wear for secondary Replace if necessary Lubricate with specified grease Drive chain Check chain slack Adjust if necessary Initial at 500 km 300 mi and every 800 km 500 mi thereafter 55 Drive chain oil Check oil level 55 Change 55 Brake and parking brake Adjust free play and or replace pads if necessary 56 Change brake fluid See NOTE following this chart 56 Con...

Page 45: ...f cracked or damaged Steering system Check toe out Adjust if necessary 59 Steering bearings Check bearing assemblies for looseness Lubricate with specified grease Ski and front sus pension Lubricate with specified grease 62 Suspension compo nent Lubricate with specified grease 62 Fittings and fasten ers Make sure that all nuts bolts and screws are properly tight ened Tighten if necessary 64 Batter...

Page 46: ...nowmobile to a Yamaha dealer to check the torque settings and adjust them if necessary ESU12891 Removing and installing the shroud and covers Shroud To remove the shroud Loosen the fasteners slowly raise the shroud and then unhook the shroud from the shroud stay To install the shroud Hook the end of the shroud onto the shroud stay slowly lower it to the original position and then tighten the faste...

Page 47: ...ct the main switch coupler and aux iliary DC jack coupler RS90GT RS90GTA RS90LTGT and then re move the top cover To install the top cover 1 Connect the main switch coupler and auxiliary DC jack coupler RS90GT RS90GTA RS90LTGT place the top cover in the original position and then tighten the quick fastener screws 2 Pass all of the cables etc through the cable guide place the cable guide in the orig...

Page 48: ...ode porcelain color could indicate an intake track air leak or car buretion problem for that cylinder Do not at tempt to diagnose such problems yourself Instead take the snowmobile to a Yamaha dealer for inspection and possible repairs You should periodically remove and inspect the spark plug because heat and deposits will cause a spark plug to slowly break down and erode Consult a Yamaha dealer b...

Page 49: ...age 40 for re moval procedures 2 Start the engine and warm it up 3 Turn the throttle stop screw in or out to adjust the engine idling speed 4 Install the shroud ESU12910 Adjusting the throttle cable free play CAUTION ECS00410 Be sure to adjust the engine idling speed first 1 Remove the shroud and the right side cover See page 40 for removal proce dures 2 Loosen the locknut 3 Turn the adjusting bol...

Page 50: ...the throttle lever pivot and the engine stop switch housing While holding the pivot point as described above press the throttle lever gradually The T O R S will be activated and the engine speed will be limited to less than the clutch engagement speed See page 74 for the clutch engagement speed WARNING EWS00361 If the engine speed does not decrease to less than the clutch engagement speed stop the...

Page 51: ...there is any snow on the air filter element remove the element brush off the snow and then in stall the air filter element 8 Place the air filter element frame in the original position and then install the air filter case cover 9 Hook the fasteners onto the air filter case cover 10 Connect the cylinder head breather hose 11 Install the headlight unit making sure to insert the projections on the he...

Page 52: ...e poor performance Common problems are hard starting bogging and plug fouling Proper carburetion adjustments will correct the air fuel ratio Be sure to have a Yamaha dealer make these adjustments Remember Less air at higher altitude means there is less horsepower available even with proper car buretion Expect acceleration and top speed to be reduced at higher altitudes To overcome operating with l...

Page 53: ... wear quickly The oil filter cartridge should be re placed every 20000 km 12000 mi of op eration To check the engine oil level 1 Place the snowmobile on a level surface and apply the parking brake 2 Start the engine warm it up for 10 15 minutes and then turn it off NOTE The engine can also be warmed up by op erating the snowmobile for 10 15 minutes After operating the snowmobile allow the engine t...

Page 54: ...ghten the oil filler cap 8 Connect the oil level gauge coupler 9 Install the right side cover and the shroud To change the engine oil with or without oil fil ter cartridge replacement 1 Place the snowmobile on a level surface and apply the parking brake 2 Start the engine warm it up for several minutes and then turn it off 3 Remove the shroud the right side cover and the top cover See page 40 for ...

Page 55: ...ons Skip steps 10 12 if the oil filter cartridge is not being replaced 10 Remove the oil filter cartridge with an oil filter wrench NOTE An oil filter wrench is available at a Yamaha dealer 11 Apply a thin coat of engine oil to the O ring of the new oil filter cartridge 12 Install the new oil filter cartridge with an oil filter wrench and then tighten it to the specified torque 1 Oil level gauge c...

Page 56: ...rn the engine off and then connect the oil level gauge coupler CAUTION ECS00470 If oil is leaking or the oil level warning indi cator comes on when the engine is run ning immediately turn the engine off and have a Yamaha dealer check the snowmo bile Continuing to operate the engine un der such conditions could cause severe engine damage 19 Install the bottom panel and the right low er cover 20 Ins...

Page 57: ... the COLD LEVEL mark See the following section Replenishing the coolant for more details CAUTION ECS00490 Hard water or salt water is harmful to the engine parts You may use boiled or dis tilled water if soft water is not available Tap water can be used temporarily in an emergency 3 Install the right side cover and the shroud Bleeding the cooling system The cooling system must be bled of air if th...

Page 58: ...ve the shroud and the left side cov er and then remove the drive guard See page 40 for removal procedures 2 Check the V belt for wear and damage Replace if necessary 3 Install the drive guard and then install the left side cover and the shroud To replace and adjust the V belt WARNING EWS00410 Never run the engine with the V belt or drive guard removed Recommended antifreeze High quality ethylene g...

Page 59: ...position reaches 1 5 mm 0 06 in below the edge of the secondary sheave assembly Have a Yamaha dealer make this adjust ment NOTE Apply the parking brake before replacing the V belt 1 Remove the shroud and the left side cov er and then remove the drive guard See page 40 for removal procedures 2 Rotate the secondary sliding sheave clockwise and push it so that it separates from the secondary fixed sh...

Page 60: ... V belt over the primary sheave assembly 1 Edge of the secondary sheave assembly 2 V belt position 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 1 V belt position adjusting bolt 2 Spacer V belt position Adjustment More than 1 5 mm 0 06 in above the edge Remove spacer From 1 5 mm 0 06 in above the edge to 0 5 mm 0 02 in...

Page 61: ... body or cloth ing during inspection or repair To check the drive chain housing oil level 1 Place the snowmobile on a level surface 2 Remove the shroud and the right side cover See page 40 for removal proce dures 3 Remove the dipstick wipe it off with a clean rag and then insert it back into the filler hole 4 Remove the dipstick and check that the oil is between the maximum and mini mum level mark...

Page 62: ... the brake system Do not operate the snowmobile if you find any problems in the brake system You could lose braking ability which could lead to an accident Ask a Yamaha dealer to inspect and repair the brake system CAUTION ECS00060 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 s...

Page 63: ... locknut 3 Turn the parking brake cable adjusting bolt in or out to adjust the cable length 4 Tighten the parking brake cable locknut 5 Turn the parking brake pad adjusting bolt in or out to adjust the clearance between the parking brake pads and the brake disc 1 Brake pad wear indicator 2 Brake pad wear limit Brake pad wear limit 7 5 mm 0 30 in 1 Parking brake pad wear limit Parking brake pad wea...

Page 64: ...at the brake fluid is above the lower level and replenish when necessary Changing the brake fluid WARNING EWS00470 Make sure that the brake fluid and the above parts are replaced by a Yamaha dealer Brake fluid replacement is necessary when the following components are replaced during the periodic maintenance or if they are dam aged or leaking All oil seals of the master cylinder and cali per cylin...

Page 65: ...ttings or debris thrown by the drive track could be danger ous to an operator or bystanders Observe the following precautions Do not allow anyone to stand behind the snowmobile when the engine is running When the rear of the snowmobile is raised to allow the drive track to spin a suitable stand must be used to support the rear of the snowmobile Never allow anyone to hold the rear of the snowmo bil...

Page 66: ... 22 lb NOTE Measure the gap between the slide runner and the edge of the track window Measure both sides 3 If the deflection is incorrect adjust the drive track Adjusting the drive track WARNING EWS00500 Be sure to have a Yamaha dealer make this adjustment Support the snowmobile securely on a suitable stand before working under neath the snowmobile Operate the engine in a well ventilated area 1 Li...

Page 67: ...t and right adjusting nuts Shifted to right Shifted to left 1 Rear axle nut 1 Slide runner Drive track alignment Shifted to right Shifted to left Left adjusting nut Turn out Turn in Right adjust ing nut Turn in Turn out 1 Left adjusting nut 2 Right adjusting nut 1 Forward 2 Gap 3 Slide runner 4 Drive track 5 Slide metal 1 Forward 2 Gap 3 Slide runner 4 Drive track 5 Slide metal U8GM10E0 book Page ...

Page 68: ...ly wear the slide runners ESU12190 Lubrication Lubricate the following points with the speci fied grease WARNING EWS00510 Apply a dab of grease onto the cable end only Do not grease the throttle cable be cause it could become frozen which could cause loss of control Be sure to have a Yamaha dealer lubri cate the front and rear suspensions Drive track deflection More than specified Less than specif...

Page 69: ...e page 40 for removal procedures 2 Remove the screws and then remove the headlight access panel 3 Disconnect the headlight coupler 4 Remove the bulb holder cover 5 Unhook the bulb holder by pushing it in then clockwise 1 Lubrication point 1 Lubrication point 1 Screw 1 Screw 2 Headlight access panel 1 Headlight coupler 2 Bulb holder cover U8GM10E0 book Page 63 Friday April 27 2007 6 43 PM ...

Page 70: ...adlight beams turn the headlight beam adjusting screw in direction a To raise the headlight beams turn the head light beam adjusting screw in direction b 3 Install the top cover ESU12290 Fittings and fasteners Check the tightness of the fittings and fasten ers Tighten in proper sequence and torque if nec essary ESU12300 Battery This snowmobile is equipped with a sealed type MF battery which does n...

Page 71: ...F CHILDREN ESU12950 Replacing a fuse WARNING EWS00550 Be sure to use the specified fuse A wrong fuse could cause electrical system dam age or A FIRE HAZARD CAUTION ECS00631 Be sure to turn the main switch to the off position and disconnect the negative bat tery lead to prevent accidental short cir cuiting 1 Remove the shroud the left side cover the right side cover and the top cover See page 40 fo...

Page 72: ... tank breather hose clamp 2 Oil tank breather hose 1 Main fuse 2 Spare main fuse 1 HEAD headlight fuse 2 SIG signal fuse 3 DC TERM auxiliary DC jack fuse 4 C W carburetor warmer fuse 5 IGN ignition fuse 6 Spare fuse Specified fuses Main fuse 30 0 A Spare main fuse 30 0 A HEAD headlight fuse 20 0 A SIG signal fuse 10 0 A DC TERM auxiliary DC jack fuse 3 0 A C W carburetor warmer fuse 20 0 A IGN ign...

Page 73: ...the headlight unit making sure to insert the projections on the headlight unit stay into the slots on the bottom of the headlight unit 11 Install the headlight unit bolts and then tighten them to the specified torque 12 Install the top cover the right side cover the left side cover and the shroud NOTE If the fuse immediately blows again ask a Yamaha dealer to inspect the snowmobile Headlight unit ...

Page 74: ... Worn or damaged gasket Replace gas ket Worn or damaged piston and cylinder Ask a Yamaha dealer to inspect 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 Due to the rubber engine mount ing the snowmobile frame is not a suitable grounding point ...

Page 75: ...jumper cable to the black con necting lead Do not reverse the connec tions 4 Pull the red connecting lead cover to expose the terminal through the slit in the cover and then connect the red jump er cable to the red connecting lead 5 Connect the other end of the red jumper cable to the positive terminal of the booster battery 6 Connect the black jumper cable to the negative terminal of the booster ...

Page 76: ...en transported Remove the spark plugs and turn the engine over several times with the ignition off to expel excess fuel Ask a Yamaha dealer to inspect Engine power is low Low coolant temperature indicator light is flashing Warm the engine up Faulty spark plugs Clean or replace the spark plugs Incorrect carburetor jetting for altitude or temperature Ask a Yamaha dealer to in spect Improper fuel flo...

Page 77: ...pect Incorrect V belt clutch settings for altitude or conditions Ask a Yamaha dealer to in spect Worn or sticking primary sheave assembly Ask a Yamaha dealer to inspect Worn or sticking secondary sheave assem bly Ask a Yamaha dealer to inspect Noise or excessive vibration in drive chain and sprockets Broken V belt clutch components Ask a Yamaha dealer to inspect Worn or damaged bearings Ask a Yama...

Page 78: ...l to protect both the combustion chamber and crankshaft from corrosion An alternate meth od is to remove the air filter case and squirt oil into the carburetor throats while the engine is running CAUTION ECS00680 Do not attempt to store the snowmobile by simply starting the engine occasionally during the storage period This can cause more harm than good Moisture and acids form during combustion wh...

Page 79: ...preferably one that is designed for it Do not use a plastic or vinyl cover condensation could be trapped un derneath which could increase the chances of rusting Returning to service after storage When returning your snowmobile to service install the V belt and battery and adjust the drive track Remove the spark plugs and clean or replace them if necessary Perform all other pre oper ation and seaso...

Page 80: ...r fiberglass rod reinforced Type Internal drive type Width 381 mm 15 0 in Deflection RS90GT 30 0 35 0 mm 1 18 1 38 in RS90GTA 30 0 35 0 mm 1 18 1 38 in RS90LT 25 0 30 0 mm 0 98 1 18 in RS90LTGT 25 0 30 0 mm 0 98 1 18 in RS90R 30 0 35 0 mm 1 18 1 38 in Length on ground RS90GT 768 mm 30 2 in RS90GTA 768 mm 30 2 in RS90LT 960 mm 37 8 in RS90LTGT 960 mm 37 8 in RS90R 768 mm 30 2 in Rear suspension Typ...

Page 81: ... Type Hydraulic disc type ventilated disc Operation Handle lever left hand operated Throttle Operation Handle lever right hand operated Electrical system Ignition system T C I Spark plug Manufacturer NGK Model CR8E Gap 0 7 0 8 mm 0 028 0 031 in Battery Model YTX20L BS Voltage capacity 12 V 18 0 Ah Ten hour rate amperage 1 8 A Bulb voltage wattage quantity Headlight 12 V 60 55 W 2 Headlight bulb ty...

Page 82: ...s in a separate place in case the snowmobile is sto len Frame serial number The frame serial number is the seventeen digit number stamped on the frame of the snowmobile Engine serial number Primary ID The engine serial number is stamped in the location as shown Key identification number The key identification number is stamped in the location as shown 1 Frame serial number 1 Engine serial number 1...

Page 83: ... to normal wear or routine maintenance including oil spark plugs clutch drive belts slide runners and track THE CUSTOMER S RESPONSIBILITY under this warranty shall be to 1 Operate and maintain the snowmobile as specified in the appropriate Owner s Manual 2 Give notice to an authorized Yamaha snowmobile dealer of any and all apparent defects within ten 10 days after discovery and make the machine a...

Page 84: ...il spark plugs clutch drive belts and slide runners Q What are some examples of abnormal strain ne glect or abuse A These terms are general and overlap each other in areas Specific examples include Running the ma chine out of oil hitting an object submerged under snow operation on surfaces other than snow or ice operating the machine with a broken or damaged part which causes another part to fail ...

Page 85: ... all warranty matters are handled at the dealer level this person is in the best position to help you If you are still not satisfied and require additional assistance please write YAMAHA MOTOR CORPORATION U S A CUSTOMER RELATIONS DEPARTMENT P O Box 6555 Cypress California 90630 When contacting Yamaha Motor Corpora tion U S A be sure to include the model serial number names dates and receipts CHANG...

Page 86: ...Consumer information 80 ESU12510 YAMAHA EXTENDED SERVICE Y E S U8GM10E0 book Page 80 Friday April 27 2007 6 43 PM ...

Page 87: ...ettings 46 I Identification numbers 76 L Label locations 4 Low coolant temperature indicator light 12 Lubrication 62 M Main switch 9 O Oil level warning indicator 14 P Parking brake lever 18 Part locations 7 Periodic maintenance chart for the emission control system 36 Pre operation check list 26 R Rear suspension damping force adjusting 24 Rear suspension damping force remote adjustment dial 19 R...

Page 88: ...Index Throttle override system T O R S checking 44 Tool kit 40 Transporting 34 Troubleshooting 68 V Valve clearance 46 V belt 52 V belt holders 20 U8GM10E0 book Page 2 Friday April 27 2007 6 43 PM ...

Page 89: ...U8GM10E0 book Page 3 Friday April 27 2007 6 43 PM ...

Page 90: ...YAMAHA MOTOR CO LTD PRINTED ON RECYCLED PAPER PRINTED IN JAPAN 2007 05 0 6 1 CR ...

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