Yamaha RS90RX, RS90LTX, RS90LTGTX, RS90GTAX, RS90GTX User Manual
OWNER’S MANUAL
RS90RX
LIT-12628-02-70
RS90GTX
RS90GTAX
RS90LTX
RS90LTGTX
8GM-28199-10
ESU10040
ESU10120
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. If you have any
questions concerning the operation or maintenance 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.A.
1st Edition, April 2007
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in Japan.
P/N LIT-12628-02-70
Introduction
Important manual information
ESU10150
EWS00010
WARNING
PLEASE READ AND UNDERSTAND THIS
MANUAL COMPLETELY BEFORE OPERATING THE SNOWMOBILE.
NOTE:
● Yamaha continually seeks advancements
in product design and quality. Therefore,
while this manual contains the most current
product information available at the time of
printing, there may be minor discrepancies
between your snowmobile and this manual.
If there is any question concerning this
manual, please consult a Yamaha dealer.
● This manual should be considered a per-
manent part of this snowmobile and should
remain with the snowmobile when resold.
EWS00020
WARNING
Failure to follow WARNING instructions
could result in severe injury or death
to the
snowmobile operator, a bystander, or a
person inspecting or repairing the snowmobile.
ECS00010
CAUTION:
A CAUTION indicates special precautions
that must be taken to avoid damage to the
snowmobile.
NOTE:
A NOTE provides key information to make
procedures easier or clearer.
Particularly important information is distinguished in this manual by the following notations.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!
Contents
Safety information ............................1
Location of the important labels ..... 4
Description ........................................ 7
Control functions .............................. 9
Main switch .................................... 9
Starter (choke) lever ....................... 9
Throttle lever .................................. 9
Engine overheating prevention
system ....................................... 10
Throttle override system
(T.O.R.S.) .................................. 10
Speedometer unit ......................... 11
High beam indicator light .............. 12
Low coolant temperature
indicator light ............................. 12
Fuel meter and grip/
thumb warmer level indicator .... 13
Fuel level warning indicator .......... 14
Oil level warning indicator ............ 14
Coolant temperature warning
indicator ..................................... 15
Self-diagnosis device ................... 15
Engine stop switch ....................... 15
Headlight beam switch
“LIGHTS” ................................... 16
Grip/thumb warmer
adjustment switch ...................... 16
Auxiliary DC jack (RS90GT /
RS90GTA / RS90LTGT) ........... 16
Brake lever ................................... 17
Parking brake lever ...................... 18
Shift lever ..................................... 18
Rear suspension damping force
remote adjustment dial .............. 19
Shroud and covers ....................... 19
Drive guard ................................... 20
V-belt holders ............................... 20
Storage 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
Removing and installing
the shroud and covers .............. 40
Checking the spark plugs ............. 42
Adjusting the engine
idling speed ............................... 43
Adjusting the throttle cable
free play .................................... 43
Checking the throttle override
system (T.O.R.S.) ..................... 44
Checking the air filter ................... 44
Carburetors .................................. 46
High-altitude settings ................... 46
Valve clearance ........................... 46
Engine oil and oil filter cartridge ... 47
Cooling system ............................ 50
V-belt ............................................ 52
Drive chain housing ..................... 55
Brake and parking brake .............. 56
Skis and ski runners ..................... 58
Steering system ........................... 59
Drive track and slide runners ....... 59
Lubrication ................................... 62
Replacing a headlight bulb ........... 63
Adjusting the headlight beams ..... 64
Contents
Fittings and fasteners ................... 64
Battery .......................................... 64
Replacing a 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
Safety information
ESU10181
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 operating this snowmobile. Become familiar with all of the operating
controls and their function. Consult a
Yamaha dealer about any control or function you do not understand.
2. This snowmobile was not manufactured
for use on public streets, roads, or highways. Such use is prohibited by law, and
you could collide with another vehicle.
3. This snowmobile is designed to carry the
OPERATOR ONLY.
Passengers are prohibited. Carrying a
passenger can cause loss of control.
4. Do not operate the snowmobile after
drinking alcohol or taking drugs. Your
ability to operate the snowmobile is reduced by the influence of alcohol or
drugs.
5. For safety and proper care of the snowmobile, always perform the pre-operation
checks on page 26 before starting the engine. Check the throttle, brake, and steering 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 parking brake before starting
the engine. Never drive the snowmobile
with the parking brake applied. This may
overheat the brake disc and reduce braking ability.
7. Do not allow anyone to stand behind the
snowmobile when starting, inspecting, or
adjusting the snowmobile. A broken
track, track fittings, or debris thrown by
the track could be dangerous to the operator or bystanders.
8. Handle fuel with care; it is HIGHLY
FLAMMABLE.
● Never add fuel when the engine is run-
ning or hot. Allow the engine to cool for
several minutes after running.
● Use an approved fuel container.
1
Safety information
● Fill the fuel tank outdoors with extreme
care. Never remove the fuel cap indoors. Never fill the fuel tank indoors.
● Never refuel while smoking or in the vi-
cinity of an open flame.
● Make sure that the fuel tank cap is
closed securely after refueling. Wipe
up any spilled fuel immediately.
9. If you swallow some gasoline, inhale a lot
of gasoline vapor, or get some gasoline
into your eyes, see your doctor immediately. If any gasoline spills on your skin or
clothing, immediately wash your skin with
soap and water, and change your
clothes.
10. Wear protective clothing. Wear an approved helmet, and a face shield or goggles. Also, wear a good quality
snowmobile suit, boots, and a pair of
gloves or mittens that will permit use of
your thumbs and fingers for operation of
the controls.
Operation
1. Do not run the engine indoors, except
when starting the engine to transport 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 exposure to hazards. Ride slowly and cautiously 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 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 conditions will
damage or result in rapid wear of ski runners, drive track, slide runners, and drive
sprockets.
5. 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.
6. Many surfaces such as ice and hardpacked snow require much longer stopping distances. Be alert, plan ahead and
2
begin decelerating early. The best braking method on most surfaces is to release
the throttle and apply the brake gently—
not suddenly.
Maintenance and storage
1. When laying the snowmobile on its side
for maintenance, use a suitable stand to
keep it level.
2. Do not leave the snowmobile on its left
side for an extended period of time. Fuel
may leak out from the fuel breather hose.
3. Modifications made to the snowmobile
not approved by Yamaha, or the removal
of original equipment may render your
snowmobile unsafe for use that may
cause severe personal injury. Modifications may also make the snowmobile illegal to use.
4. Never store the snowmobile with fuel in
the fuel tank inside a building where ignition sources are present such as hot water and space heaters, an open flame,
sparks, clothes dryers, and the like. Allow
the engine to cool off before storing the
snowmobile in an enclosed space.
5. Always refer to the “STORAGE” section
on page 72 if the snowmobile is to be
stored for an extended period.
6. Maintain or replace safety and instruction
labels, as necessary.
Safety information
3
Safety information
ESU10231
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.
4
Safety information
5
Safety information
NOTE:
The following suspension adjustment charts are included with the Owner’s Manual.
6
ESU10260
Description
1. Battery
2. Main fuse
3. Air filter
4. Oil filler cap
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 adjustment dial
13. Drive track
14. V-belt holder
7
Description
1. Brake lever
2. Parking brake lever
3. Grip warmer adjustment switch
4. Headlight beam switch
5. Engine stop switch
6. Thumb warmer adjustment switch
7. Throttle lever
8. 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
23. Thumb warmer indicator
24. Fuel meter and grip/thumb warmer level indicator
25. Odometer/tripmeter
NOTE:
● The snowmobile you have purchased may differ slightly from those shown in the figures of
this manual.
● Design and specifications are subjected to change without notice.
8
ESU10281
Main switch
The main switch controls the ignition and
lighting systems. The various positions are
described below.
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.
The starter motor cranks the engine.
ECS00020
CAUTION:
Release the switch immediately after the
engine starts.
NOTE:
The headlights, meter lighting, and taillights
come on after the engine is started.
ESU10300
Starter (choke) lever
Use the starter (choke) lever when starting
and warming up a cold engine.
Control functions
1. Star ter (choke) lever
NOTE:
Refer to the “Starting the engine” section on
page 28 for proper operation.
1. Warming up
2. When starting a cold engine.
3. When the engine is warm.
ESU10310
Throttle lever
Once the engine is running cleanly, squeezing the throttle lever will increase the engine
speed and cause engagement of the drive
system. Regulate the speed of the snowmobile by varying the throttle position. Because
the throttle is spring-loaded, the snowmobile
will decelerate, and the engine will return to
idle when it is released.
9
Control functions
1. Throttle lever
EWS00030
WARNING
Check the throttle, brake, and steering for
proper operation before starting the engine. (See page 26.)
ESU10321
Engine overheating prevention
system
This model is equipped with a system, which
prevents overheating when the engine is
idling.
When the engine has been idling for 3 minutes or longer and the coolant temperature
has risen above 100 °C (212 °F), the engine
automatically stops to prevent overheating.
If the carburetors or throttle cable malfunctions during operation, the T.O.R.S. will operate when the throttle lever is released.
The T.O.R.S. is designed to override the ignition and limit the engine speed to less than the
clutch engagement speed if the carburetors
fail to return to the idle position when the throttle lever is released. (See page 74 for the
clutch engagement speed.)
Idling /
starting
Throttle
switch
Throttle
position
sensor
Engine Run Run
Off On Off
Closed Open Open
Running Trouble
T. O. R .S .
will oper-
ate.
Idling / starting
NOTE:
The engine can be started after it stops.
ESU10331
Throttle override system
(T.O.R.S.)
EWS00040
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.
● Be sure to use the specified spark plug
and spark plug cap. Otherwise, the
T.O.R.S. will not work properly.
10
1. Throttle position sensor (throttle valve
closed position)
2. Throttle cable
3. Throttle switch (off)
Running
Control functions
1. Throttle position sensor (throttle valve open
position)
2. Throttle switch (on)
Trouble
1. Throttle position sensor (throttle valve open
position)
2. Throttle switch (off)
NOTE:
● When the T.O.R.S. is activated, the warn-
ing light and self-diagnosis warning indicator will flash, and the two-digit code “84” will
flash in the tripmeter/odometer display.
● The T.O.R.S. monitors the condition of the
throttle position sensor, speedometer assembly, and speed sensor, and will operate
if any of the monitored items is disconnected or is malfunctioning.
1. Warning light “”
2. Self-diagnosis warning indicator “”
3. Two-digit code “84”
ESU10351
Speedometer unit
The speedometer unit is equipped with the
following:
● a digital speedometer (which shows the
riding speed)
● an odometer (which shows the total dis-
tance traveled)
● a tripmeter (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 coolant temperature indicator light, the warning light, and
all segments of the meter display turn on and
off once.
11
Control functions
1. Tachometer
2. Low coolant temperature indicator light
“”
3. Warning light “”
4. Meter display
5. Select/reset button
The grip warmer level is initially displayed for
5 seconds, then the display switches to the
fuel meter.
Odometer and tripmeter modes
Pushing the select/reset button switches the
display between the odometer mode “ODO”
and the tripmeter mode “TRIP”.
To reset the tripmeter, push the select/reset
button for at least one second while the tripmeter is displayed.
NOTE:
To switch the speedometer, odometer, and
tripmeter displays between kilometers and
miles, select the odometer mode “ODO”, and
then push the select/reset button for at least
10 seconds while the snowmobile is stopped.
ESU10410
High beam indicator light “”
The high beam indicator light comes on when
the high beams of the headlights are switched
on. (See page 16 for headlight beam switch
operation.)
1. High beam indicator light “”
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.
1. Low coolant temperature indicator light
“”
2. Warning light “”
3. Self-diagnosis warning indicator “”
4. Two-digit code “86”
The snowmobile can be operated normally after the indicator light goes off.
NOTE:
Operate the snowmobile at low speeds when
the low coolant temperature indicator light is
on. If the engine speed is too high, the warning light and self-diagnosis warning indicator
will flash and the two-digit code “86” will flash
12
Control functions
in the tripmeter/odometer display. When this
occurs, maximum engine speed is reduced to
protect the engine.
ESU10421
Fuel meter and grip/thumb
warmer level indicator
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.
1. Fuel meter and grip/thumb warmer level indicator
Fuel meter
The display segments of the fuel meter disappear towards “E” (Empty) as the fuel level decreases. When only one segment is left near
“E”, the fuel level warning indicator and the
warning light come on.
If the fuel level warning indicator and the
warning light come on, refuel as soon as possible.
NOTE:
The snowmobile must be stopped on a level
surface to obtain an accurate fuel meter reading, since the reading changes according to
the movement and inclination of the snowmobile.
Grip/thumb warmer level indicator
When the grip warmer adjustment switch is
pressed, the grip warmer indicator comes on
and the display switches to the grip warmer
level.
When the thumb warmer adjustment switch is
pressed, the thumb warmer indicator comes
on and the display switches to the thumb
warmer level.
1. Grip warmer indicator “”
2. Thumb warmer indicator “”
1. Warning light “”
2. Fuel level warning indicator “”
1. Grip warmer adjustment switch
13
Control functions
1. Thumb warmer adjustment switch
NOTE:
● The grip/thumb warmer level is displayed
for 5 seconds after releasing the grip/thumb
warmer adjustment switch, then the display
switches to the fuel meter.
● 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 is stopped.
ESU10450
Fuel level warning indicator “”
The fuel level warning indicator indicates a
malfunctioning sensor, disconnected coupler,
broken lead, or short circuit when detected by
the self-diagnosis device of the snowmobile.
The fuel level warning indicator, warning light,
and all segments of the fuel meter warn the
rider of the above problems by flashing continuously.
When this occurs, have a Yamaha dealer inspect the snowmobile as soon as possible.
1. Fuel level warning indicator “”
2. Warning light “”
3. Fuel meter
ESU10460
Oil level warning indicator “”
The oil level warning indicator and the warning light come on when the engine oil level is
low.
1. Oil level warning indicator “”
2. Warning light “”
If the oil level warning indicator and the warning light come on, place the snowmobile on a
level surface and allow it to idle for one
minute.
If the oil level warning indicator and the warning light go off, the engine oil level is sufficient,
however it is getting low. Add engine oil as
soon as possible.
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 47 for engine oil
level checking procedures), and add engine
oil if necessary.
14
ESU10511
Coolant temperature warning
indicator “”
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 50 for checking
procedures.)
1. Coolant temperature warning indicator “”
2. Warning light “”
ECS00040
CAUTION:
Do not operate the engine if it overheats.
ESU10522
Self-diagnosis device
This model is equipped with a self-diagnosis
device for various electrical circuits.
If any of those circuits are defective, the warning light and the self-diagnosis warning indicator will flash, and a two-digit error code will
flash slowly in the tripmeter/odometer display.
Control functions
1. Warning light “”
2. Self-diagnosis warning indicator “”
3. Two-digit error code
EWS00052
WARNING
● If the self-diagnosis warning indicator
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 compartment are connected properly.
● If the self-diagnosis warning indicator,
warning light, and an error code flash after the engine has been restarted, note
the error code, and then have a Yamaha
dealer inspect the snowmobile as soon
as possible.
ESU10530
Engine stop switch “”
The engine stop switch is used to stop the engine in an emergency. Simply push the stop
switch to stop the engine. To start the engine,
pull the stop switch and proceed with starting
the engine. (See pages 28 for engine starting
procedures.)
15
Control functions
1. Engine stop switch“”
During the first few rides, practice using the
stop switch so that you can react quickly in an
emergency.
ESU10661
Headlight beam switch
“LIGHTS”
Push the headlight beam switch to change the
headlight to high beam “HI” or to low beam
“LO”.
1. Headlight beam switch “LIGHTS”
2. High beam “HI”
3. Low beam “LO”
ESU12650
Grip/thumb warmer adjustment
switch
The grip warmer adjustment switch and the
thumb warmer adjustment switch control the
electrically heated handlebar grips and throttle lever respectively.
1. Grip warmer adjustment switch
1. Thumb warmer adjustment switch
To raise the temperature, press the respective 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, and then
insert the accessory power plug into the
jack.
16
Control functions
1. Auxiliary DC jack cap
2. Auxiliary DC jack
NOTE:
After using the auxiliary DC jack, be sure to
remove the accessory power plug from the
jack and close the auxiliary DC jack cap.
ECS00120
CAUTION:
● Do not use accessories requiring more
than the maximum rated capacity for the
auxiliary DC jack. This may overload the
circuit and cause the fuse to blow. (See
page 65 for the specified amperage.)
● Do not use an automotive cigarette light-
er or other accessory with a plug that
gets hot because the jack can be damaged.
Maximum rated capacity:
DC 12 V, 2.5 A (30 W)
ESU10570
Brake lever
The snowmobile is stopped by braking the entire drive system.
Squeeze the brake lever towards the handlebar grip to stop the snowmobile.
1. Brake lever
NOTE:
When the brake lever is operated, the brake
light will illuminate.
ECS00060
CAUTION:
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 a position
adjuster.
To adjust the brake lever position:
1. Loosen the locknut.
2. While lightly pushing the brake lever in direction (a), finger tighten the adjusting
bolt to set the brake lever to the desired
position.
17
Control functions
1. Locknut
2. Adjusting bolt
3. Tighten the locknut securely after adjusting the brake lever.
ESU10580
Parking brake lever
When parking the snowmobile or starting the
engine, apply the parking brake by moving the
parking brake lever to the left.
EWS00060
WARNING
● Always set the 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. Parking brake lever
To release the parking brake, move the parking brake lever to the right.
18
1. Shift lever
1. Pull out.
2. Slide to “FWD” (forward).
3. Release.
Control functions
1. Pull out.
2. Slide to “REV” (reverse).
3. Release.
ECS00070
CAUTION:
Do not shift from “FWD” to “REV” or from
“REV” to “FWD” while the snowmobile is
moving. Otherwise, the drive system
could be damaged.
ESU12530
Rear suspension damping
force remote adjustment dial
Turn the remote adjustment dial to adjust the
rear suspension damping force. (See page 24
for adjustment procedures.)
1. Rear suspension damping force remote adjustment dial
ESU10720
Shroud and covers
Securely fasten the shroud and covers before
operating the snowmobile. (See page 40 for
removal and installation procedures.)
1. Shroud
2. Right side cover
1. Left side cover
1. Top cover
EWS00090
WARNING
● Do not drive the snowmobile with the
shroud or covers unfastened or removed.
19
Control functions
● Keep your body and clothing away from
rotating parts when servicing the snowmobile with the shroud or covers removed.
● Do not touch the hot muffler and engine
during or immediately after operation.
ECS00370
CAUTION:
Make sure that all cables, leads, etc., are
routed properly before installing the
shroud and covers.
ESU10750
Drive guard
The drive guard is designed to cover the Vbelt clutch and V-belt in case parts break or
come loose.
1. V-belt holder
ECS00180
CAUTION:
Make sure that the V-belt is installed securely in the holders.
ESU10810
Storage compartment
Open the storage compartment to store the
tool kit, spare parts, or other small items.
1. Drive guard
EWS00400
WARNING
● Make sure that the drive guard is tight-
ened 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.
20
1. Storage compartment
ESU10600
Fuel
Make sure that there is sufficient fuel in the
fuel tank.
EWS00070
WARNING
● Fuel is HIGHLY FLAMMABLE and poi-
sonous. Check the “SAFETY INFORMATION” section carefully before refueling.
(See page 1.)
Control functions
● Do not fill the fuel tank above the bottom
of the filler tube. Fuel could overflow if
the snowmobile is tilted or if the ambient
temperature rises, causing the fuel to
warm up and expand.
● Make sure that the fuel tank cap is
closed securely after refueling. Leaking
fuel can catch fire.
1. Filler tube
2. Fuel level
Recommended fuel:
REGULAR UNLEADED GASOLINE
ONLY
Fuel tank capacity:
36.2 L (9.64 US gal) (8.03 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.
ECS00080
CAUTION:
● Oxygenated fuels (gasohol) containing
a maximum 5% of ethanol can be used,
although richer jetting may be required
to prevent engine damage. Consult a
Yamaha dealer. Gasohol containing
methanol is not recommended.
● Make sure that 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 and
control over certain types of terrain or riding
conditions.
EWS00150
WARNING
Be sure to have a Yamaha dealer make this
adjustment.
This shock absorber contains highly pressurized nitrogen gas. It could explode by
improper handling, causing injury, or
property damage.
● Do not tamper with or attempt to open
the shock absorber.
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