Yamaha SXV70G User manual

OWNER’S MANUAL
SNOWMOBILE
SXV70G
SXV70ERG
8EK-28199-10LIT-12628-02-22
PRINTED ON RECYCLED PAPER
PRINTED IN JAPAN
2001 ·4 -2.5 ×1 CR

ESU00286
1-
MACHINE IDENTIFICATION
Identification number records
A. FRAME NUMBER:
CZ-01E
B. ENGINE NUMBER (PRIMARY ID):
CZ-01E
C. KEY NUMBER:
CZ-01E
Record the frame number, engine number (Primary ID),
and key number in the spaces provided for assistance
when ordering spare parts from a Yamaha dealer.
1The frame number is the seventeen-digit number
stamped on the frame of the snowmobile. (See
fig. È.)
2The engine number is stamped in the location as
shown. (See fig. É.)
3Key number (See fig. Ê.)
Also, record and keep the ID numbers in a separate
place in case the snowmobile is stolen.
A
B
C
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ESU00001
2-
INTRODUCTION
Congratulations! Your choice of a Yamaha snowmobile
assures you of the highest quality and dependability.
Your Yamaha snowmobile is manufactured by a company
well-known for excellence in the field of snowmobiles.
The most advanced production equipment and technol-
ogy have made Yamaha one of the best snowmobile
manufacturers. We are confident that this snowmobile
will meet the greatest expectations of our customers.
This manual is designed to acquaint you with the opera-
tion of this snowmobile and minor maintenance required
for satisfactory service.
Should major repairs ever be required, you are advised
to ask a Yamaha dealer to inspect and repair the snow-
mobile whenever it is necessary; they have the tech-
niques, tools, and parts to ensure your satisfaction. We
hope that the information within this manual will help you
enjoy many hours of pleasure with your Yamaha snow-
mobile.
SXV70G
SXV70ERG
OWNER’S MANUAL
©2001 by Yamaha Motor Corporation, U.S.A.
1st Edition, April 2001
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-12628-02-22
U8EK10.book Page 1 Tuesday, June 26, 2001 4:35 PM

WARNING
@
PLEASE READ AND UNDERSTAND THIS MANUAL
COMPLETELY BEFORE OPERATING THE SNOWMO-
BILE.
@
NOTE:
@
●Yamaha continually seeks advancements in product
design and quality. Therefore, while this manual con-
tains the most current product information available
at the time of printing, there may be minor discrepan-
cies 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 permanent part
of this snowmobile and should remain with the snow-
mobile when resold.
@
Particularly important information is distinguished in this
manual by the following notations.
The Safety Alert Symbol means ATTENTION! BECOME
ALERT! YOUR SAFETY IS INVOLVED!
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 snow-
mobile.
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.
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ESU00003
CONTENTS
YAMAHA MOTOR
CORPORATION, U.S.A.
SNOWMOBILE LIMITED
WARRANTY .......................................1-1
YAMAHA EXTENDED SERVICE
(Y.E.S.) ...............................................1-4
LOCATION OF THE
IMPORTANT LABELS .......................2-1
SAFETY INFORMATION ...................3-1
DESCRIPTION ...................................4-1
CONTROL FUNCTIONS ....................5-1
Main switch......................................5-1
Starter lever (choke) ........................5-2
Throttle lever....................................5-2
Throttle override system
(T.O.R.S.) ........................................5-2
Speedometer unit ............................5-4
High beam indicator light .................5-4
Fuel meter .......................................5-5
Fuel level warning indicator .............5-5
Oil level warning indicator................5-6
Coolant temperature warning
indicator ...........................................5-6
Self-diagnosis warning indicator......5-7
Engine stop switch...........................5-9
Brake lever ......................................5-9
Parking brake lever........................5-10
Drive select lever ...........................5-10
Headlight beam switch ..................5-11
Grip warmer control knob ..............5-11
Thumb warmer control knob..........5-11
Shroud latches...............................5-12
Drive guard ....................................5-12
V-belt holders ................................5-13
Spark plug holders.........................5-13
Carburetor heating knob................5-13
Storage compartment....................5-13
PRE-OPERATION CHECKS..............6-1
Fuel .................................................6-1
Engine oil.........................................6-2
Coolant ............................................6-2
Throttle lever ...................................6-3
Recoil starter ...................................6-3
Throttle override system
(T.O.R.S.) ........................................6-3
Brake ...............................................6-4
Brake fluid leakage..........................6-5
V-belt ...............................................6-5
Drive guard......................................6-5
Drive track .......................................6-6
Slide runners ...................................6-6
Skis and ski runners ........................6-7
Steering system...............................6-7
Lights...............................................6-7
Battery .............................................6-8
Air filter ............................................6-8
Fittings and fasteners ......................6-9
Tool kit and recommended
equipment........................................6-9
OPERATION ......................................7-1
Starting the engine ..........................7-1
Emergency engine starting..............7-2
Break-in ...........................................7-4
Riding your snowmobile ..................7-5
Getting to know your snowmobile ...7-5
Learning to ride your snowmobile ...7-5
To start out and accelerate..............7-6
Braking ............................................7-6
Turning ............................................7-6
Riding uphill.....................................7-7
Riding downhill ................................7-7
Traversing a slope...........................7-8
Ice or icy surface .............................7-8
Hard-packed snow ..........................7-8
Operation on surfaces other than
snow or ice ......................................7-9
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Maximizing drive track life .............7-10
Driving ...........................................7-11
Stopping the engine.......................7-12
Transporting ..................................7-13
PERIODIC MAINTENANCE ...............8-1
Periodic maintenance chart .............8-1
Tool kit .............................................8-4
Spark plug inspection ......................8-4
Engine idle speed adjustment .........8-5
Throttle cable adjustment ................8-6
Oil pump cable adjustment ..............8-6
Carburetor adjustment.....................8-7
Yamaha Power Valve System
(Y.P.V.S.).........................................8-9
High altitude adjustments ..............8-10
Cooling system ..............................8-11
V-belt replacement ........................8-13
Checking the oil level of the drive
chain housing ................................8-16
Checking the brake pads...............8-17
Checking the parking brake
pads...............................................8-17
Checking the brake fluid level........8-18
Brake fluid replacement.................8-19
Suspension....................................8-19
Drive track adjustment...................8-24
Ski alignment .................................8-26
Lubrication .....................................8-27
Headlight bulb replacement...........8-28
Headlight beam adjustment...........8-28
Battery ...........................................8-29
Fuse replacement..........................8-30
TROUBLESHOOTING .......................9-1
STORAGE ........................................10-1
SPECIFICATIONS............................11-1
Dimensions....................................11-1
Engine ...........................................11-1
Chassis..........................................11-2
Electric...........................................11-3
WIRING DIAGRAM ..........................12-1
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1-1
ESU00004
1-
YAMAHA MOTOR CORPORATION, U.S.A.
SNOWMOBILE LIMITED WARRANTY
CW-01E
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1-2
CW-02E
U8EK10.book Page 2 Tuesday, June 26, 2001 4:35 PM

1-3
CW-03E
U8EK10.book Page 3 Tuesday, June 26, 2001 4:35 PM

1-4
ESU00005
YAMAHA EXTENDED SERVICE (Y.E.S.)
CW-10E
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2-1
ESU00007
2-
LOCATION OF THE
IMPORTANT LABELS
Please read the following labels carefully before operat-
ing this snowmobile.
NOTE:
@
Maintain or replace safety and instruction labels, as nec-
essary.
@
1SXV70
1SXV70ER
23
AVERTISSEMENT
WARNING
NE PAS FAIRE FONCTIONNER LE
MOTEUR SANS COURROIE EN V
OU PROTECTEUR D’EMBRAYAGE.
DO NOT OPERATE ENGINE WITHOUT
V-BELT OR DRIVE GUARD.
8BD-77762-00
AVERTISSEMENT
WARNING
This unit contains high pressure nitrogen gas.
Mishandling can cause explosion.
• Read owner’s manual for instructions.
• Do not incinerate, puncture or open.
Cette unitécontient de l’azote àhaute pression.
Une mauvaise manipulation peut entraîner d’explosion.
• Voir le manuel d’utilisateur pour les instructions.
• Ne pas brûler ni perforer ni ouvrir.
U8EK10.book Page 1 Tuesday, June 26, 2001 4:35 PM

3-1
ESU00009
3-
SAFETY INFORMATION
When you ride your snowmobile, you must know and use
the following for your safety. Severe injury or death may
result if you ignore any of the following.
Before operating
1. Read the Owner’s Manual and all labels before oper-
ating this snowmobile. Become familiar 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 pro-
hibited by law, and you could collide with another
vehicle.
3. SXV70 and SXV70ER are 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 snowmo-
bile 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 pages 6-1–6-9
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.
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3-2
7. Do not allow anyone to stand behind the snowmobile
when starting, inspecting, or adjusting the snowmo-
bile. 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 running or hot.
Allow the engine to cool for several minutes after
running.
●Use an approved fuel container.
●Fill the fuel tank outdoors with extreme care.
Never remove the fuel cap indoors. Never fill the
fuel tank indoors.
●Never refuel while smoking or in the vicinity of an
open flame.
●Make sure that the fuel tank cap is closed securely
after refueling. Wipe up any spilled fuel immedi-
ately.
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 qual-
ity snowmobile suit, boots, and a pair of gloves or mit-
tens 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.
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3-3
3. This snowmobile is not designed for use on surfaces
other than snow or ice. Use on dirt, sand, grass,
rocks, or bare pavement may cause loss of control
and may damage the snowmobile.
4. Avoid operating on glare ice, or on snow which has a
lot of dirt or sand mixed in. Operation under such
conditions will damage or result in rapid wear of ski
runners, drive track, slide runners, and drive sprock-
ets.
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 hard-packed snow
require much longer stopping distances. Be alert,
plan ahead and begin decelerating early. The best
braking method on most surfaces is to release the
throttle and apply the brake gently—not suddenly.
Maintenance and storage
1. Do not leave the snowmobile on its left side for an
extended period of time. Fuel may leak out from the
fuel breather hose.
2. 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.
3. 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.
4. Always refer to the “STORAGE”section if the snow-
mobile is to be stored for an extended period.
5. Maintain or replace safety and instruction labels, as
necessary.
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4-1
ESU00012
4-
DESCRIPTION
1Windshield
2Steering handlebar
3Seat
4Frame
5Slide rail suspension
6Drive track
7Skis
8Headlight
9Shroud
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4-2
0Storage compartment
ATail/brake light
BSnow flap
CBrake lever
DParking brake lever
EHeadlight beam switch
FEngine stop switch
GThrottle lever
HDrive select lever (SXV70ER)
IStarter handle
JShroud latch
KMain switch
LStarter lever
MThumb warmer control knob
NGrip warmer control knob
OTachometer
PHigh beam indicator light
QWarning light
RSpeedometer
SSelf-diagnosis warning indicator
TCoolant temperature warning indicator
UOil level warning indicator
VFuel level warning indicator
WSelect/reset button
XFuel meter
YTrip/odometer
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5-1
ESU00013
5-
CONTROL FUNCTIONS
ESU00256
Main switch
The main switch controls the following items.
1“OFF”
The ignition circuit is switched off.
The key can be removed only in this position.
2“ON”
The ignition circuit is switched on.
The engine can be started.
NOTE:
@
The headlight, meter lights, and taillight will come on
after the engine starts.
@
For SXV70ER
3“START”
The starting circuit is switched on.
The starter motor starts.
CAUTION:
@
Release the switch immediately after the engine
starts.
@
ÈSXV70
ÉSXV70ER
A
B
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5-2
ESU00020
Starter lever (choke)
Use the starter lever (choke) when starting and warming
up a cold engine.
1Starter lever (choke)
2When starting a cold engine.
3Warming up
4When the engine is warm.
NOTE:
@
Refer the “Starting the engine”section for proper opera-
tion.
@
ESU00022
Throttle lever
Once the engine is running cleanly, squeezing athe throt-
tle lever 1will 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 deceler-
ate, and the engine will return to idle when it is released b.
WARNING
@
Check the throttle, brake, and steering for proper
operation before starting the engine.
@
ESU00023
Throttle override system (T.O.R.S.)
If the carburetor or throttle cable should malfunction dur-
ing operation, the T.O.R.S. will operate when the throttle
lever is released.
The T.O.R.S. is designed to interrupt the ignition and
keep the engine revolution speed between 2,800 and
3,000 r/min if the carburetor fails to return to idle when
the lever is released.
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5-3
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 prob-
lem 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.
@
CA-01E
ÈIdle or starting
ÉRun
ÊTr o u b l e
1Carburetor switch
2Throttle switch
3Throttle cable
4Throttle valve
aOn
bOff
A
B
C
Mode
Switch
Idle
or
starting
Run Trouble
Throttle switch Off On Off
Carburetor switch On Off Off
Engine Run Run T.O.R.S.
will operate
AB C
U8EK10.book Page 3 Tuesday, June 26, 2001 4:35 PM