Yamaha SR1NLK User manual

Read this manual carefully
before operating this vehicle.
SR1NLK
OPERATOR’S MANUAL
LIT-12628-03-57 8JR-F8199-75

Table of Contents
Foreword................................................ 2
General Information .......................... 3-12
Snowmobile Identification ................... 3
Control Locations................................ 3
Gasoline — Oil.................................... 3
Engine Break-In .................................. 4
Drive Belt Break-In.............................. 4
Cold Drive-Away Function .................. 4
Speedometer/Tachometer/Digital Gauge 5
Diagnostic Codes................................ 6
Handlebar Tilt ..................................... 7
Exhaust System.................................. 7
Air-Intake Silencer .............................. 8
Cooling System................................... 8
Battery ................................................ 8
Jump-Starting ..................................... 8
Drive Clutch and Driven Clutch........... 9
Drive Clutch/Driven Clutch Alignment10
Fuel Pump ........................................ 10
Track/Track Studs............................. 10
Reverse Operation............................ 10
Access Panel/Hood .......................... 11
Removable Seat ............................... 12
Heated Seat (if equipped)................. 12
Towing .............................................. 12
Operating Instructions..................... 13-16
Starting and Stopping Engine ........... 14
Braking.............................................. 14
Emergency Stopping ........................ 15
Throttle/Ignition Monitor Switch ........ 15
Varying Altitude Operation ................ 16
Lubrication.......................................17-19
Chain Case ....................................... 17
Rear Suspension .............................. 19
Maintenance....................................20-39
Periodic Maintenance Checklist........ 20
Fuel System...................................... 21
Checking Engine Oil Level................ 21
Changing Engine Oil/Filter................ 21
Coolant Level.................................... 23
Spark Plugs....................................... 23
Checking/Adjusting Valve Clearance 24
Battery............................................... 24
Fuses ................................................ 26
Brake System.................................... 27
Chain Tension................................... 30
Drive Belt .......................................... 30
Track Tension ................................... 32
Track Alignment................................ 33
Suspension ....................................... 34
Lights ................................................ 36
Ski Wear Bars................................... 38
Adjusting Ski Stance......................... 38
Rail Wear Strips................................ 39
Performance Tips............................40-41
Preparation for Storage........................ 42
Preparation after Storage..................... 43
Snowmobile Safety Rules .................... 44
Consumer Information.....................45-49

1
Reference Information
Write the appropriate information for your Yamaha Snowmobile in the spaces below.
Always use these numbers when referring to your snowmobile.
Model: _________________________________________________
Date of Purchase: ________________________________________
Vehicle Identification Number: _______________________________
Engine Serial Number: _____________________________________
Your Yamaha Dealer: _____________________________________
Address: _______________________________________________
Phone: _________________________________________________
! WARNING
A snowmobile is a very high performance vehicle. Because it does accelerate
rapidly and is capable of very high speeds, it should not be operated by a novice
or an inexperienced operator. Never accelerate rapidly or drive at high speed
beyond the limits of visibility or without being totally familiar with the terrain
and what lies in front of you. Obey speed limits and never operate at speeds that
do not allow adequate maneuvering and stopping distances. Read and study the
entire Operator’s Manual and Safety Handbook. Failure to follow this warning
could result in personal injury to yourself or others.
Personal Injury
• To avoid injury to yourself and others, NEVER operate the snowmobile without
first reading and understanding this manual and the Snowmobile Safety Hand-
book; then follow the instructions and heed the warnings given.
• USE COMMON SENSE.
• DON’T DRINK and DRIVE.
• STAY IN CONTROL at ALL TIMES.
• TELL YOUR FRIENDS. If you see a friend operating a snowmobile recklessly, at
excessive speeds, while intoxicated, or in other unsafe ways, don’t wait until it is
too late to warn of the consequences of snowmobile misuse. Such conduct
endangers everyone. TAKE AN ACTIVE ROLE IN THE SAFETY OF YOUR-
SELF AND OTHERS.
Parts and Accessories
When in need of replacement parts, oil, or accessories for your Yamaha Snowmo-
bile, be sure to only use GENUINE YAMAHA PARTS, OIL, AND ACCESSO-
RIES. Only genuine Yamaha parts, oil, and accessories are engineered to meet the
standards and requirements of your Yamaha Snowmobile. For a complete list of
accessories, refer to the current Yamaha Accessory Catalog. To aid in service and
maintenance procedures on these snowmobiles, an Illustrated Parts Manual and a
Service Manual are available through your local Yamaha Snowmobile dealer.

2
Foreword
Congratulations! You have chosen a quality Yamaha Snowmobile designed and
assembled to give dependable service. Be sure, as the owner/operator of a Yamaha
Snowmobile, to become thoroughly familiar with its basic operation, maintenance,
and off-season storage procedures. Read this manual and the accompanying Snow-
mobile Safety Handbook before operating the snowmobile to learn safe and proper
use of your new Yamaha Snowmobile. Always operate the snowmobile within your
level of skill and current terrain conditions.
The Operator’s Manual, Snowmobile Safety Handbook, and Snowmobile Decals dis-
play the words Warning, Caution, and Note to emphasize important information. The
symbol ! WARNING identifies personal safety-related information. Be sure to
follow the directive because it deals with the possibility of serious personal injury or
even death. A CAUTION identifies unsafe practices which may result in snow-
mobile-related damage. Follow the directive because it deals with the possibility of
damaging part or parts of the snowmobile. The symbol  NOTE: identifies supple-
mentary information worthy of particular attention.
This manual covers operator-related maintenance, operating instructions, and off-sea-
son storage instructions. If major repair or service is ever required, contact an autho-
rized Yamaha Snowmobile dealer for professional service.
At the time of publication, all information and illustrations were technically correct.
Some illustrations used in this manual are used for clarity purposes only and are not
designed to depict actual conditions. Because Yamaha constantly refines and
improves its products, no retroactive obligation is incurred.
This Operator’s Manual should be considered a permanent part of the snowmobile
and must remain with the snowmobile at the time of resale. If the snowmobile
changes ownership more than once, contact Yamaha Customer Service (refer to page
47 for the contact information) for proper registration information. This manual was
prepared by the Product Service and Warranty Department of Yamaha.
Every Yamaha Snowmobile meets or exceeds the standards of the Snowmobile
Safety and Certification Committee and displays the SSCC decal. Yamaha endorses
and encourages the safe use of all snowmobiles. Always wear a helmet and eye pro-
tection. Drive with caution, observe all state and local regulations, and respect the
rights of others. ISMA members like Yamaha do their part to improve trails, sponsor
events, and generally support the sport of snowmobiling. As a member of the
National Snowmobile Foundation, Yamaha promotes snowmobiling through educa-
tion, charity, and research programs.
© 2018 Yamaha

3
General Information
Snowmobile
Identification
The snowmobile has two important iden-
tification numbers. The Vehicle Identifi-
cation Number (VIN) is stamped into the
tunnel near the right-side footrest and
below the seat. The rear tunnel decal also
displays pertinent production informa-
tion. The decal also displays pertinent
production information. The Engine
Serial Number (ESN) is stamped into the
crankcase of the engine.
0726-383
These numbers are required by the dealer
to complete warranty claims properly. No
warranty will be allowed by Yamaha Inc.
if the engine serial number or VIN is
removed or mutilated in any way.
Always provide the snowmobile name,
VIN, and ESN when contacting an autho-
rized Yamaha Snowmobile dealer for
parts, service, accessories, or warranty. If
the complete engine must be replaced,
ask the dealer to notify Yamaha for cor-
rect registration information.
Control Locations
Shown are the typical control locations
for Yamaha snowmobiles. Location of a
specific control will vary according to
model.
0749-256C
Gasoline — Oil
Recommended Gasoline
The recommended gasoline to use in
these snowmobiles is 87 octane regular
unleaded. In many areas, oxygenates are
added to the gasoline. Oxygenated gaso-
lines containing up to 10% ethanol are
acceptable gasolines.
When using ethanol-blended gasoline, it is
not necessary to add a gasoline antifreeze
since ethanol will prevent the accumula-
tion of moisture in the fuel system.
Recommended Engine Oil
The recommended oil to use is Semi-
Synthetic YAMALUBE 0W-30 oil.
After 800 km (500 miles) of operating,
the engine oil must changed and the oil
filter replaced. The engine oil should be
changed every 4000 km (2500 miles)
before prolonged storage and the oil filter
should be changed every 20,000 km
(12,500 miles).
CAUTION
Any oil used in place of the recom-
mended oil could cause serious
engine damage.

4
Filling Gas Tank
Since gasoline expands as its temperature
increases, the gas tank must be filled to
its rated capacity only. Expansion room
must be maintained in the tank particu-
larly if the tank is filled with cold gaso-
line and then moved to a warm area.
Also, if the snowmobile is to remain on a
trailer after filling the gas tank, the bed of
the trailer must be maintained level to
prevent gasoline from draining out
through the gas tank vent hose.
Engine Break-In
The engine (when new or rebuilt) requires
a short break-in period before the engine is
subjected to heavy load conditions.
This engine does not require any pre-
mixed fuel during the break-in period.
There is never a more important period in
the life of the engine than the first 500
km (300 miles).
Since the engine is brand new, do not put
an excessive load on it for the first 500
km (300 miles). The various parts in the
engine wear and polish themselves to the
correct operating clearances. During this
period, prolonged full throttle operation
or any condition that might result in
engine overheating must be avoided.
Operating your snowmobile for the first
time: Start the engine and let it idle for 15
minutes.
0-160 km (0–100 miles): Avoid pro-
longed operation above 6000 RPM.
160-500 km (100–300 miles): Avoid pro-
longed operation above 8000 RPM.
500 km (300 miles) and beyond: The
snowmobile can now be operated nor-
mally.
NOTE: After 800 km (500 miles) of
operation, the engine oil must be
changed and the oil filter replaced. If
any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the snowmobile.
Drive Belt Break-In
Drive belts require a break-in period of 40
km (25 miles). Drive the snowmobile for
40 km (25 miles) at 3/4 throttle or less. By
revving the engine up and down (but not
exceeding 100 km/h [60 mph]), the
exposed cord on the side of a new belt will
be worn down. This will allow the drive
belt to gain its optimum flexibility and will
extend drive belt life.
 NOTE: Before starting the snowmo-
bile in extremely cold temperatures,
the drive belt should be removed and
warmed up to room temperature.
Once the drive belt is at room tem-
perature, install the drive belt.
Cold Drive-Away
Function
There is a “cold drive-away” function
incorporated within the ECM.
! WARNING
Always fill the gas tank in a well-venti-
lated area. Never add gasoline to the
snowmobile gas tank near any open
flames or with the engine running. DO
NOT SMOKE while filling the gas tank.
Do not sit on the snowmobile without
first installing the gas tank cap.
CAUTION
Never run the engine with the drive
belt removed. Excessive revving of
the engine could result in serious
engine damage and drive clutch fail-
ure.

5
NOTE: When cold-starting the
engine, the coolant temperature
warning icon will illuminate and the
LOW TEMP display on the readout
screen will begin to flash. With the
engine in this temperature range, the
RPM “limit” of the engine will be
below drive system engagement
speed. As the engine warms, the
coolant temperature warning icon
will begin to flash, the TEMP display
will continue to flash, and the RPM
“limit” of the engine will increase
allowing the snowmobile to move
without full-throttle operation. When
the engine reaches proper operating
temperature, the coolant tempera-
ture warning icon and the LOW
TEMP display will go out.
Speedometer/
Tachometer/Digital
Gauge
CWI-050A
A. Coolant Temperature
Indicator
The indicator and LOW TEMP display
will cease to flash when the engine
reaches proper operating temperature.
If the coolant temperature rises too far
above proper operating temperature, the
indicator will flash a warning (alert) and
the engine will “surge” to alert the opera-
tor. If the coolant temperature rises to a
critical point above proper operating tem-
perature, the indicator will cease flashing
and will remain constantly illuminated.
NOTE: If the indicator is constantly
on, the engine will shut off if vehicle
speed is reduced to 1.5 km-h (0.9
MPH) or slower.
B. High Beam Indicator
The indicator is on whenever the high
beam mode is selected by the headlight
switch.
C. Oil Pressure Indicator
The indicator relates to engine oil pres-
sure, not the oil level; however, if the oil
level is low, it may affect oil pressure. If
oil pressure is lost, check the oil level
(see page 21).
If the indicator does not go out or if the
engine does not start, take the snowmo-
bile to an authorized Yamaha Snowmo-
bile dealer. If not under warranty, this
service is at the discretion and expense of
the snowmobile owner.
D. Low Fuel Indicator
The indicator illuminates whenever the
gas in the gas tank is low.
E. Coolant Temperature/
Battery Voltage/Intake Air
Temperature
This bar display shows coolant tempera-
ture, battery voltage, and intake air tem-
perature. Press the Lower Left Button to
change which parameter is being dis-
played. Press and hold the Lower Left
Button to see the actual values associated
with the mode selected.
CAUTION
It is extremely important that the
engine is properly warmed up before
subjecting the engine to high speed
operation or heavy loads. The engine
should be allowed to idle at least 3-4
minutes before it is operated at more
than 1/2 throttle. In extremely cold
conditions, the warm-up time will be
longer. Cold seizure and piston scuff-
ing caused by insufficient warm-up
will not be covered by warranty. Also,
do not idle the engine for excessively
long periods of time.
CAUTION
If the indicator is illuminated, stop the
engine immediately and allow it to cool
down. If unable to either determine or
remedy the problem, take the snowmo-
bile to an authorized Yamaha Snowmo-
bile dealer for service. If not under
warranty, this service is at the discretion
and expense of the snowmobile owner.

6
F. Fuel Level Display
This display shows the approximate
amount of gas remaining in the gas tank.
G. RPM/Speed/Clock/
Altimeter
Press the Upper Left Button to cycle the
left screen between RPM and speed.
NOTE: When RPM is displayed on
the left screen, the right screen will
display speed, clock, or altimeter.
When speed is displayed on the left
screen, the right screen will display
RPM, clock, or altimeter.
Press the Upper Right Button to cycle the
right screen between speed, RPM, clock,
and altimeter.
Press and hold the Upper Button on the
speed-side of the gauge to shift the gauge
between standard (MPH/miles/Fahren-
heit) and metric (km/h/kilometers/Cel-
sius) modes.
Press and hold the Upper Button on the
RPM-side of the gauge to view maxi-
mum RPM. This value is reset each time
the ignition key is turned off.
With the clock mode selected by pressing
the Upper Right Button, press and hold
the Upper Right Button to set the clock.
The option of selecting the 12-hour or
24-hour clock is available; press the
either Left Button to alternate between
the two modes. Next, press the Lower
Right Button to set the clock. Press either
Left Button to set the hours; then press
the Lower Right Button to set the min-
utes. Press either Left Button to set the
minutes. When the proper time has been
set, press the Lower Right Button to
return to the main gauge display.
With the altimeter mode selected by
pressing the Upper Right Button, press
and hold the Upper Right Button to set
the current altitude by using either Left
Button. When the proper altitude has
been set, press the Lower Right Button to
return to the main gauge display.
H. Engine Hour Meter/
Odometer/Trip Meter/
Clock
This display shows engine hours, odome-
ter, trip meter, or clock. Press the Lower
Right Button to change which parameter
is being displayed. The Engine Hour
Meter and Odometer cannot be reset. To
reset the trip meter, select the Trip Meter;
then press and hold the Lower Right But-
ton until the trip meter display reads 0.
NOTE: The clock can only be dis-
played in this position if it is not
already being displayed in the main
right screen. To set the clock when
the clock is in this position, press
and hold the Lower Right Button;
then use the procedure found in G.
Diagnostic Codes
Diagnostic codes are activated by the
ECM and may be displayed on the read-
out screen for a number of reasons.
If a code is displayed while the engine is
running, the ECM is receiving input that
is outside of its established parameters. If
a code has been activated, take the snow-
mobile to an authorized Yamaha Snow-
mobile dealer for service. If not under
warranty, this service is at the discretion
and expense of the snowmobile owner.
Refer to the following chart for a list of
possible diagnostic codes:
Code Trouble
P0107 Manifold absolute pressure circuit low
P0108 Manifold absolute pressure circuit high
P0112 Intake air temp sensor circuit low
P0113 Intake air temp sensor circuit high
P0115 Engine coolant temp sensor 1 circuit
P0117 Engine coolant temp sensor 1 circuit low
P0118 Engine coolant temp sensor 1 circuit
high
P0120 Throttle position sensor circuit
P0122 Throttle position sensor circuit low
P0123 Throttle position sensor circuit high
P0201 Injector circuit/open — cylinder 1
P0202 Injector circuit/open — cylinder 2
P0203 Injector circuit/open — cylinder 3
P0217 Engine coolant over temp condition
P0219 Engine overspeed condition
P0231 Fuel pump relay circuit low
P0232 Fuel pump relay circuit high

7
Handlebar Tilt
The handlebar can be adjusted to the
operator’s preference. To adjust the han-
dlebar, use the following procedure:
1. Remove the handlebar cover; then
loosen the eight cap screws securing
the handlebar caps to the riser and the
riser to the steering post.
0747-828
2. Adjust the handlebar to operator’s
desired position, tighten the cap
screws evenly to 2.0 kg-m (15 ft-lb),
and check steering for maximum
right/left turning capabilities.
Exhaust System
The exhaust system is designed to reduce
noise and to improve the total perfor-
mance of the engine. If any exhaust sys-
tem component is removed from the
engine and the engine is run, severe
engine damage will result.
P0233 Fuel pump relay circuit
P0261 Cylinder 1 injector circuit low
P0262 Cylinder 1 injector circuit high
P0264 Cylinder 2 injector circuit low
P0265 Cylinder 2 injector circuit high
P0267 Cylinder 3 injector circuit low
P0268 Cylinder 3 injector circuit high
P0480 Fan – primary relay control circuit
P0484 Fan – primary relay control circuit high
P0485 Fan – primary relay control circuit low/
SG/open
P0508 Idle air control system circuit low
P0509 Idle air control system circuit high
P0511 Idle air control circuit
P0522 Engine oil pressure sensor/switch circuit
low
P0523 Engine oil pressure sensor /switch circuit
high
P0562 System voltage low
P0563 System voltage high
P0642 Sensor reference voltage “A” circuit low
P0643 Sensor reference voltage “A” circuit high
P0780 Shift error
P1315 Crankshaft position out of sync
P1338 Crankshaft spike detected
P1339 Crankshaft tooth not detected
P1685 Main relay open circuit
P1686 Main relay circuit low
P1687 Main relay circuit high
P1688 Reverse relay open circuit
P1689 Reverse relay circuit low
P1690 Reverse relay circuit high
P1691 Forward relay open circuit
P1692 Forward relay circuit low
P1693 Forward relay circuit high
P1694 Headlight relay open
P1695 Headlight relay low
P2228 Barometric pressure sensor “A” circuit low
P2229 Barometric pressure sensor “A” circuit
high
P2300 Ignition coil “A” primary control circuit low
P2301 Ignition coil “A” primary control circuit high
P2303 Ignition coil “B” primary control circuit low
P2304 Ignition coil “B” primary control circuit high
P2306 Ignition coil “C” primary control circuit low
P2307 Ignition coil “C” primary control circuit high
U0155 LCD gauge communication lost
Code Trouble
CAUTION
Do not rotate the handlebar to a posi-
tion that allows air to enter the brake
system.
! WARNING
Tighten cap screws according to
specifications to prevent unexpected
“movement” of the handlebar during
operation over rough terrain. DO NOT
position the handlebar so steering
(maximum right/left turning capabili-
ties) or throttle and brake controls are
affected.

8
Air-Intake Silencer
Used in conjunction with the fuel intake
system is a specially designed air-intake
silencer. The purpose of the silencer is to
quiet the intake of fresh air. Since the fuel
intake system is calibrated with the air-
intake silencer in place, the engine must
never be run with the silencer removed.
Performance will not be improved if the
air-intake silencer is removed. In con-
trast, severe engine damage will occur.
Cooling System
These snowmobiles are equipped with a
closed liquid cooling system for engine
cooling. The cooling system should be
inspected daily for leakage and damage.
Also, the coolant level should be checked
daily. If leakage or damage is detected,
take the snowmobile to an authorized
Yamaha Snowmobile dealer for service.
If not under warranty, this service is at
the discretion and expense of the snow-
mobile owner.
When filling the cooling system, use an
ethylene glycol-based coolant/water mix-
ture which will satisfy the coldest antici-
pated weather conditions of your area in
accordance with the coolant manufac-
turer’s recommendations.
NOTE: If operating on ice or hard-
packed snow conditions, it is recom-
mended that Ice Scratchers be
installed to reduce wear strip wear
and engine overheating.
For checking/filling cooling system, refer
to Coolant Level sub-section in the Main-
tenance section.
Battery
It is extremely important that the battery
be maintained at full charge at all times
and that the battery connections be clean
and tight. If charging the battery becomes
necessary, refer to Battery sub-section in
the Maintenance section.
Jump-Starting
NOTE: Yamaha does not recom-
mend jump-starting a snowmobile
with a dead battery but rather to
remove the battery, service it, and
correctly charge it; however, in an
emergency, it may be necessary to
jump-start a snowmobile. If so, use
the following procedure to carefully
and safely complete this procedure.
NOTE: To access the battery, the
seat must be removed.
1. For the snowmobile to be jump-
started, slide any terminal boots away.
CAUTION
These snowmobiles are not designed
to be operated in dusty conditions.
Operating the snowmobile in dusty
conditions will result in severe engine
damage.
CAUTION
Always turn the ignition switch key to
the OFF position when the snowmo-
bile is not being used. Leaving the
ignition switch in the ON position will
result in discharging the battery and
possible damage to the battery.
CAUTION
Jump-starting the vehicle without a
battery is not advisable as it may
cause damage. Additionally, running
the unit without a battery in place or
the use of a “Jumper Pack” could
cause damage to the electrical sys-
tem.
! WARNING
Improper handling or connecting of a
battery may result in severe injury
including acid burns, electrical burns,
or blindness as a result of an explo-
sion. Always remove rings and
watches. Any time service is per-
formed on a battery, the following
must be observed: keep sparks, open
flame, cigarettes, or any other flame
away. Always wear safety glasses.
Protect skin and clothing when han-
dling a battery. When servicing a bat-
tery in an enclosed space, keep the
area well-ventilated.

9
2. Inspect the battery for any signs of
electrolyte leaks, loose terminals, or
bulging sides. Leaking or bulging
battery cases may indicate a frozen
or shorted battery.
3. Inspect the snowmobile to be used for
jump-starting to determine if voltage
and ground polarity are compatible.
The vehicle must have a 12-volt DC,
negative ground electrical system.
4. Move the vehicle to be used for the
jump-start close enough to ensure
the jumper cables easily reach; then
set and lock the brakes, shut off all
electrical accessories, and turn the
ignition switch OFF.
NOTE: Make sure all switches on
the snowmobile to be jump-started
are turned OFF.
5. Disconnect all external accessories
such as cell phones, GPS units, and
radios on both vehicles.
6. Attach one clamp of the positive
(red) cable to the positive (+) termi-
nal (1) of the dead battery (C) being
careful not to touch any metal with
the other clamp; then attach the
other clamp of the positive (red)
cable to the positive (+) terminal (2)
of the good battery (B).
0744-527
 NOTE: Some jumper cables may be
the same color but the clamps or ends
will be color-coded red and black.
7. Attach one clamp of the negative
jumper cable (black) to the negative
(-) terminal (3) of the good battery
(B); then attach the other clamp of
the negative (black) jumper cable (4)
to an unpainted metal surface (A) on
the engine or frame well away from
the dead battery and fuel system
components.
8. Stand well away from the dead bat-
tery and start the vehicle with the
good battery. Allow the vehicle to
run for several minutes applying
some charge to the dead battery.
9. Start the snowmobile with the dead
battery and allow it to run for several
minutes before disconnecting the
jumper cables.
10. Remove the jumper cables in oppo-
site order of hook-up (4, 3, 2, 1). Be
careful not to short cables against
bare metal.
NOTE: Have the battery and elec-
trical system checked prior to oper-
ating the snowmobile again.
Drive Clutch and Driven
Clutch
The drive clutch and driven clutch do not
require lubrication; therefore, no special
maintenance is required by the snowmo-
bile owner except for periodical cleaning.
! WARNING
If any of these conditions exist, DO
NOT attempt to jump-start, boost, or
charge the battery. An explosion
could occur causing serious injury.
CAUTION
Always make sure the electrical sys-
tems are of the same voltage and
ground polarity prior to connecting
jumper cables. If not, severe electrical
damage may occur.
CAUTION
Failure to disconnect electronic acces-
sories during jump-starting may cause
system damage due to power spikes.
! WARNING
Never make the final connection to a bat-
tery as a spark could ignite hydrogen
gases causing an explosion of the bat-
tery resulting in acid burns or blindness.

10
However, the drive clutch and driven
clutch should be disassembled, cleaned,
and inspected by an authorized Yamaha
Snowmobile dealer after every 4000 km
(2500 miles) or seasonally, whichever
occurs first. This service is at the discre-
tion and expense of the snowmobile
owner.
When operating the snowmobile at high
altitudes, it may be necessary to change
certain component parts of the drive
clutch and/or the driven clutch. See an
authorized Yamaha Snowmobile dealer
for further information.
Drive Clutch/Driven
Clutch Alignment
The alignment between the drive clutch
and driven clutch is set at the factory.
Normally, no adjustment is necessary as
long as neither the drive clutch nor the
driven clutch is removed or disassem-
bled. However, if premature drive belt
wear is experienced or if the drive belt
turns over, the drive clutch/driven clutch
alignment must be checked. Take the
snowmobile to an authorized Yamaha
Snowmobile dealer for this service. If not
under warranty, this service is at the dis-
cretion and expense of the snowmobile
owner.
Fuel Pump
The fuel pump is designed to provide
adequate amount of gas to the injectors
at all throttle settings. If a fuel delivery
problem is suspected, take the snowmo-
bile to an authorized Yamaha Snowmo-
bile dealer. If not under warranty, this
service is at the discretion and expense of
the snowmobile owner.
Track/Track Studs
Accelerated wear strip and track clip
wear caused by operating on ice or hard-
packed snow conditions is NOT covered
under Yamaha warranty policy.
NOTE: If operating on ice or hard-
packed snow conditions, it is recom-
mended that Ice Scratchers be
installed to reduce wear strip wear
and engine overheating. If regularly
operating on ice or hard-packed
snow conditions, Performance Wear
Strips may be installed at the
expense of the snowmobile owner.
In general, track life will be shortened
when studs are installed. Drilling stud
holes into the drive track will cut the
internal fibers weakening the track.
Avoid spinning the drive track. Studs
may catch on an object and pull out of the
track leaving tears and damage around
the already weakened area. To minimize
possible damage, consult your stud man-
ufacturer for installation and stud pattern
recommendations. Yamaha does not rec-
ommend studding a track.
Reverse Operation
The electrical reverse function offers the
operator the convenience of being able to
back up the snowmobile rather than hav-
ing to turn the snowmobile around by
hand. This feature, under most situations,
should not be used to free a stuck snow-
mobile as it will tend to dig the skis
deeper into the snow. Always use mini-
mal speed when operating in reverse and
come to a complete stop before shifting
from either forward to reverse or reverse
to forward.
Shifting Into Reverse
741-438A
NOTE: Correct drive belt tension
(deflection) is important for the
reverse function to operate properly.
If the belt is too tight, difficulty in
engaging reverse will be experi-
enced.
1. Always warm up the engine for 2-3
minutes prior to shifting into reverse.
CAUTION
DO NOT attempt to service the drive
clutch and driven clutch. The drive
clutch and driven clutch must be ser-
viced by an authorized Yamaha Snow-
mobile dealer only.

11
2. With the engine at idle (under 2500
RPM) and the snowmobile at a com-
plete stop, press and release the
reverse switch button.
NOTE: The snowmobile must be at
a complete stop and the engine run-
ning under 2500 RPM before the sys-
tem will allow shifting.
3. When reverse is engaged, a reverse
icon will illuminate on the deluxe
digital gauge and a reverse alarm
will sound.
Operating in Reverse
1. When shifting into reverse, always
wait for the reverse icon to illumi-
nate and the reverse alarm to sound
before backing up.
 NOTE: The reverse function is can-
celled whenever the engine is shut off.
2. After shifting from reverse to for-
ward (or from forward to reverse),
apply the throttle slowly and evenly
to allow the driven pulley to engage
properly.
Access Panel/Hood
To remove the access panel and hood, use
the following procedure:
1. Remove the hairpin clip from the pin
located at the front of the access
panel. Remove the thumb screw
securing the front left access panel
to the front fascia. Move the panel
up and off the pin; then swing the
panel all the way out and unhinge
the panel from the lower console.
2. Remove the Torx-head screws secur-
ing the hood (located on the underside
of the hood above the front tube of the
upper A-arm); then remove the Torx-
head screws from the top-side of the
hood securing the hood to the upper
console and the Torx-head screws
from under the nosepiece of the hood.
0747-830
3. Remove the intake panel below the
gauge; then locate the hood harness
connector (located in front of the
speedometer) and unplug the con-
nector; then move the hood slightly
forward and remove the hood.
To install the access panel and hood, use
the following procedure:
1. Position the hood onto the snowmo-
bile and connect the hood harness
connector making sure the harness
does not become pinched.
2. Secure the hood with Torx-head
screws and tighten securely.
3. Install the access panel onto the
lower console; then close the access
panel and secure with the hairpin
clip. Install the intake panel.
CAUTION
Never shift into reverse while the
snowmobile is moving forward as it is
hard on the drive system.
! WARNING
Use caution and minimal speed when
operating the snowmobile in reverse.
Be sure the button is in the desired
position.
CAUTION
After reversing in deep powder snow
conditions, make sure the snowflap
does not become “caught up” in the
track. Track and/or snowflap damage
may occur.
CAUTION
If the snowmobile is equipped with
Ice Scratchers, the scratchers must
be disengaged or component damage
will occur.

12
Removable Seat
To remove the seat, remove the Torx-
head screw from the underside of the
seat; then lift on the back of the seat and
move it up and rearward to remove it.
0747-739
To install the seat, route the front tab on
the seat through the seat-base hold-down
bracket; then install the seat and secure
using the Torx-head screw.
SNO-273
NOTE: Prior to lowering and secur-
ing the seat, connect the seat heater
harness connector.
Heated Seat (if equipped)
Some models are equipped with a heated
seat. Models with this option can be
adjusted with a HIGH and LOW switch
which will be located near the gas tank cap.
SNO-766
Towing
If the snowmobile is to be towed by
another snowmobile, do not tow using
the loops in the skis. The tow rope should
be attached to the lower A-arms.
CAUTION
Prior to removing the seat, lift the rear
of the seat and disconnect the seat
heater harness connector.
! WARNING
People who are unable to feel pain to
the skin because of advanced age,
chronic illness, diabetes, spinal cord
injury, medication, alcohol use,
exhaustion, or other physical condi-
tions, must exercise care when using
the seat heater. The seat heater may
cause burns even at low temperatures,
especially if used for long periods of
time. Do not place anything on the seat
that insulates against heat, such as a
blanket or cushion, because this may
cause the seat heater to overheat. Do
not puncture the seat with pins, nee-
dles, or other pointed objects because
this may damage the heating element
which may cause the seat heater to
overheat. An overheated seat may
cause serious personal injury.

13
Operating Instructions
It is imperative that the brake system be
checked for wear and proper operation
and that all safety checks found in the
accompanying Snowmobile Safety
Handbook be performed before attempt-
ing to start the engine. After the engine
has been started, check the headlights
(high and low beam), taillight, and brake
light to be sure they are working properly
and adjusted correctly. Make sure all
lights are clean to provide maximum illu-
mination. The headlight and taillight
must be clean and must be illuminated
whenever the engine is running.
1. Test the operation of the brake sys-
tem by compressing the brake lever.
The brake lever must feel firm when
compressed; then while holding the
brake lever in the compressed posi-
tion, measure the distance between
the brake lever and the handlebar.
The distance must be greater than
25.4 mm (1 in.).
2. With the brake fluid reservoir in a
level position and the cover
removed, check the fluid level. The
brake fluid level must be at the high
brake fluid mark in the reservoir.
0745-817
3. If the brake fluid is below the high
brake fluid mark, add Yamaha-
approved DOT 4 brake fluid until
the fluid is at the recommended
level. Install and secure the reservoir
cover. Do not allow moisture to con-
taminate the brake system.
4. Test the throttle control lever by
completely compressing and releas-
ing it several times. The lever
MUST return to the idle position
quickly and completely.
5. Make sure the battery is fully
charged to ensure the engine is turn-
ing over at a sufficient RPM to start.
NOTE: Even though the engine
turns over, the engine may not have
sufficient RPM to start.
6. Check the spark plugs and replace as
necessary. Short engine run times
cause carbon buildup on spark
plugs.
7. Ensure the gas tank is full of fresh
gas whenever the snowmobile is
removed from storage.
CAUTION
Brake fluid is highly corrosive. Do not
spill brake fluid on any surface of the
snowmobile.
! WARNING
Do not overfill the brake fluid reser-
voir. Overfilling the reservoir may
cause the brake system to hydrauli-
cally lock. Use only Yamaha-approved
brake fluid.
! WARNING
Do not start the engine if the brake sys-
tem is not functioning properly. Service
the brake system or have it properly
repaired prior to operating the snow-
mobile. Serious personal injury or even
death may occur if the brake system is
not operating properly.
CAUTION
Always check the coolant level before
starting the engine.

14
8. Ensure drive belt tension and deflec-
tion are correct to reduce starter
drag.
Starting and Stopping
Engine
1. Move the emergency stop switch to
the UP or RUN position.
2. Insert key into ignition switch; then
rotate key to the RUN position.
NOTE: When a cold engine is
being started, DO NOT COMPRESS
THE THROTTLE CONTROL LEVER. If
the throttle control lever is com-
pressed, the engine will not start
because the fuel/air mixture will be
too lean.
3. Rotate the key to the START posi-
tion for 5-10 seconds; then when the
engine starts, release the key.
4. A “cold drive-away” function is incor-
porated within the engine. This func-
tion is active until the engine reaches
operating temperature.
5. Flooding — If the engine does not
start but seems ready to start, engage
the brake lever lock; then compress
the throttle control lever fully and try
to start the engine. When the engine
starts, release the throttle control lever
immediately. After the warm-up,
release the brake lever lock.
NOTE: Spark plugs can be changed
by the snowmobile owner if qualified
to do so. If the owner does not feel
qualified, take the snowmobile to an
authorized Yamaha Snowmobile
dealer for inspection and service. This
service is at the discretion and
expense of the snowmobile owner.
6. To shut off the engine, turn the igni-
tion key to the OFF position or push
the emergency stop switch to the
DOWN position.
NOTE: When the engine is turned
off, wait for the gauge to completely
power down before attempting to
start the engine.
Braking
The following are items that the operator
must be familiar with when operating this
snowmobile and its hydraulic brake sys-
tem. Important additional information on
the proper maintenance of the brake sys-
tem is found in the Maintenance section.
1. Use the brakes wisely. Each time the
brakes are applied in all hydraulic
brake systems (including automotive
applications), heat is transferred to the
brake fluid. The amount of heat trans-
ferred during high speed stops and/or
repetitive use may be high enough to
boil the brake fluid and cause the
brakes to either fade or may cause an
unexpected loss of brakes. If this
occurs, the brake fluid requires a cool-
down period before the brakes will
again function properly.
This cool-down period will vary
depending upon the ambient air tem-
perature and the temperature of the
brake fluid. If loss of brakes has
occurred because of high fluid tem-
peratures, do not operate the snowmo-
bile until the cool-down period has
expired and brake lever firmness has
returned.
CAUTION
Do not continuously run the starter
for more than 10 seconds at a time.
CAUTION
It is extremely important that the engine
is properly warmed up before subject-
ing the engine to high speed operation
or heavy loads. The engine should be
allowed to idle at least 3-4 minutes
before it is operated at more than 1/2
throttle. In extremely cold conditions,
the warm-up time will be longer. Cold
seizure and piston scuffing caused by
insufficient warm-up will not be covered
by warranty. Also, do not idle the engine
for excessively long periods of time.
CAUTION
Always turn the ignition switch key to
the OFF position when the snowmo-
bile is not being used. Leaving the
ignition switch in the ON position will
result in discharging the battery and
possible damage to the battery.

15
2. Be sure to maintain the brake fluid at
the proper level and take care not to
get any moisture in the system as
moisture in the brake fluid lowers the
boiling point. If the brake fluid is ever
boiled (by high speed stops or repeti-
tive use) or if moisture is allowed to
enter the system, it must be changed.
Never substitute or mix different types
or grades of brake fluid.
3. Never ride the brake. Even main-
taining minimal pressure on the
brake lever will cause the brake pads
to drag on the disc and may overheat
the brake fluid.
4. The brake lever lock is not a parking
brake and should not be applied for
periods exceeding 5 minutes.
NEVER OPERATE THE SNOW-
MOBILE WITH THE BRAKE
LEVER LOCK ENGAGED.
5. Pumping the brake lever is permissi-
ble; however, if pumping the brake
lever more than twice is necessary to
obtain the necessary stopping power,
immediately take the snowmobile to
an authorized Yamaha Snowmobile
dealer for service. If not under war-
ranty, this service is at the discretion
and expense of the snowmobile
owner.
6. When new brake pads are installed,
a “burnishing” process is required.
Emergency Stopping
There are several methods of stopping or
slowing the snowmobile under a variety
of situations. Identified in the following
chart are the ways a snowmobile may be
brought to a stop and the effectiveness
under normal conditions.
Throttle/Ignition
Monitor Switch
The throttle control is equipped with a
monitor switch for safety purposes which
will stop the engine when a loss of return
spring force occurs. If ice forms in the
throttle system or if there is some other
malfunction of the throttle system result-
ing in a loss of return spring force, the
monitor switch will stop the engine when
the throttle control lever is released.
! WARNING
Excessive, repetitive use of the
hydraulic brake for high speed stops
will cause overheating of the brake
fluid and premature brake pad wear
which will result in an unexpected
loss of brakes.
! WARNING
Use only Yamaha-approved DOT 4
brake fluid. Never substitute or mix
different types or grades of brake
fluid. Brake loss can result. Check
brake fluid level and pad wear before
each use. Brake loss can result in
severe injury or even death.
! WARNING
The brake lever lock is not a parking
brake and should not be applied for
periods exceeding 5 minutes. The
brake lever lock maintains the brake
lever in the compressed position and
maintains pressure against the brake
disc; however, after a period of time,
the pressure applied to the brake disc
may relax below the amount required
to hold the snowmobile stationary.
Item Function
Emergency Stop
Switch interrupts ignition circuit
Throttle/Ignition
Monitor Switch interrupts ignition circuit
Ignition Switch interrupts ignition circuit
Brake slows the drive system
! WARNING
If any malfunction of the throttle sys-
tem occurs (such as freezing in fluffy
snow) and the monitor switch does
not shut off the engine, press down
on the emergency stop switch IMME-
DIATELY to stop the engine. DO NOT
start the engine until the malfunction
in the throttle system has been
located and corrected.

16
If the snowmobile engine stops abruptly
when the throttle control lever is released
and the activation of the monitor switch
is suspected, use the following proce-
dure:
1. Rotate the ignition key to the OFF
position.
2. Remove ice and snow from the
throttle system and wait 5-10 min-
utes for the engine heat to thaw ice
from the throttle system.
3. Test the throttle control lever by
compressing and releasing it several
times. The lever MUST return to the
idle position quickly and completely.
NOTE: If the throttle control lever
operates properly and the engine
does not start, compress the throttle
lever slightly (approximately 1/8
throttle) and try starting the engine.
If the engine now starts and stops
when the throttle lever is released,
take the snowmobile to an autho-
rized Yamaha Snowmobile dealer for
service. If not under warranty, this
service is at the discretion and
expense of the snowmobile owner.
4. If the throttle control lever operates
properly, rotate the ignition key to
the RUN position and go through
normal starting procedures.
NOTE: If the throttle control lever
operates properly and the engine
does not start, a malfunctioning moni-
tor switch may be the problem. Take
the snowmobile to an authorized
Yamaha Snowmobile dealer for ser-
vice. If not under warranty, this ser-
vice is at the discretion and expense
of the snowmobile owner. However, if
a dire emergency exists wherein the
engine must be started, disconnect
the throttle monitor switch located in
the right-side handlebar control.
NOTE: If disconnection of the throt-
tle monitor switch is needed to start
the engine, take the snowmobile to an
authorized Yamaha Snowmobile
dealer for service as soon as possi-
ble. If not under warranty, this service
is at the discretion and expense of the
snowmobile owner.
NOTE: The monitor switch is now
bypassed. All other ignition/electrical
features (ignition switch, emergency
stop switch, headlight, taillight, and
brake light) will operate properly.
Varying Altitude
Operation
Operating a snowmobile at varying alti-
tudes requires changes in performance
components. These changes affect drive
train components. Have a Yamaha dealer
perform altitude-related service.
NOTE: Just as important as cali-
brating the snowmobile for higher alti-
tudes is recalibrating the snowmobile
when going to lower altitudes.
NOTE: Drive train changes can be
made by the snowmobile owner if
qualified to do so. If the owner does
not feel qualified, take the snowmo-
bile to an authorized Yamaha Snow-
mobile dealer for this service. This
service is at the discretion and
expense of the snowmobile owner.
! WARNING
If the throttle control lever does not
work properly, DO NOT ATTEMPT TO
START THE ENGINE.
! WARNING
Under no circumstances should dis-
connection of the throttle control wir-
ing harness be used as a substitute
for the monitor switch during normal
operation of the snowmobile. Per-
sonal injury and damage could occur
if the throttle system malfunctions or
if the operator is unable to stop the
engine in an emergency. If the snow-
mobile must be operated with a dis-
connected throttle control wiring
harness, EXTREME CAUTION MUST
BE TAKEN. NEVER EXCEED 10 MPH
WITH THE THROTTLE CONTROL WIR-
ING HARNESS DISCONNECTED.

17
Lubrication
Chain Case
Checking Lubricant Level
NOTE: The snowmobile must be
on a level surface for this procedure.
1. Check the lubricant level in the
chain case by using the sight glass.
0746-115
NOTE: The correct level is when
the lubricant is at least halfway up in
the sight glass.
NOTE: Adding lubricant can be
done by the snowmobile owner if
qualified to do so. If the owner does
not feel qualified, take the snowmo-
bile to an authorized Yamaha Snow-
mobile dealer for this service. This
service is at the discretion and
expense of the snowmobile owner.
2. If the lubricant level is low, remove
the right-side access panel.
3. Remove the three screws securing
the shift actuator to the chain case,
disconnect the actuator wiring har-
ness, and remove the actuator w/
extension, detent, and spring; then
add appropriate amount of Yamaha
Synthetic Chain Lube through the
shift actuator opening.
NOTE: Be sure to add a small
amount of white lithium grease to
the O-rings of the new actuator
extension and the shift actuator
detent block before installing.
4. Install the actuator extension and
gently rotate counterclockwise to
make sure the shift fork is in the for-
ward position. When the shift fork is
in the forward position, make sure
the notch in the extension is directed
downward.
YM-101
5. Install spring into the bottom of shift
actuator detent block and install into
the chain case cover. The notch in
the extension should be lined up
with the notch in the block.
YM-102
NOTE: To verify everything is
installed correctly, turn the exten-
sion counterclockwise. The notch in
the extension should not rotate out
of the detent block.
6. Rotate the extension clockwise
approximately 20° making sure not
to pull out the extension when rotat-
ing. This is only to aid in the instal-
lation of the actuator.
SNO-1247A
7. Install the actuator and secure using
the existing three Torx screws.
Tighten to 0.4 kg-m (36 in.-lb).

18
8. Connect the harness to the gear posi-
tion sensor; then secure the connec-
tor to the main harness using a cable
tie.
9. Install the lower console; then install
the seat, hood, and both access pan-
els.
10. Start the engine; then shift the snow-
mobile into and out of reverse three
times.
NOTE: If excessive build-up of
moisture or discolored oil is
detected in the chain case, it may be
necessary to replace the lube.
Replacing Lubricant
NOTE: Replacing the lubricant can
be done by the snowmobile owner if
qualified to do so. If the owner does
not feel qualified, take the snowmo-
bile to an authorized Yamaha Snow-
mobile dealer for this service. This
service is at the discretion and
expense of the snowmobile owner.
1. Place the snowmobile on a level sur-
face. Remove both access panels
and the hood; then remove the
exhaust resonator.
2. Remove the three screws securing
the shift actuator to the chain case;
then disconnect the actuator wiring
harness and remove the actuator,
extension, detent, and spring.
3. Place a drain pain under the chain
case; then loosen the 11 screws
securing the chain case cover/oil
tank assembly to the chain case
housing starting with the bottom
screws first.
NOTE: Do not remove all 11
screws completely until the chain
lube has been completely removed.
This will help keep debris/oil out of
the screw holes.
4. Remove all 11 screws; then swing
the chain case out of the way.
Account for a thrust washer on the
countershaft.
YM-128A
5. Inspect all chain case components
along with the cover seal for nicks or
damage.
6. Wipe clean the chain case cover and
housing free of old oil; then install
the cover and secure using the exist-
ing screws. Tighten to 1.65 kg-m (12
ft-lb).
7. Fill the chain case with 355 ml (12
oz) of Yamaha Synthetic Chain
Lube.
NOTE: Be sure to add a small
amount of white lithium grease to
the O-rings of the new actuator
extension and the shift actuator
detent block before installing.
8. Install the actuator extension and
gently rotate counterclockwise to
make sure the shift fork is in the for-
ward position. When the shift fork is
in the forward position, make sure
the notch in the extension is directed
downward.
YM-101
9. Install spring into the bottom of shift
actuator detent block and install into
the chain case cover. The notch in
the extension should be lined up
with the notch in the block.