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EVU00050
1 -CONTENTS
LOCATION OF THE WARNING AND 
SPECIFICATION LABELS ....................... 1-1
SAFETY INFORMATION ......................... 2-1
DESCRIPTION AND VEHICLE 
IDENTIFICATION .................................... 3-1
Identification number records ............... 3-7
Key identification number ..................... 3-9
Vehicle identification number ............. 3-11
Model label ......................................... 3-13
CONTROL FUNCTIONS ......................... 4-1
Main switch........................................... 4-1
Indicator and warning lights.................. 4-5
Multi-function meter unit ..................... 4-13
Switches ............................................. 4-21
Accelerator pedal ............................... 4-35
Brake pedal ........................................ 4-37
Parking brake lever ............................ 4-39
Drive select lever ................................ 4-41
Fuel tank cap ...................................... 4-41
Starter (choke).................................... 4-43
Seats .................................................. 4-45
1234
Seat belts ........................................... 4-47
Glove compartment............................ 4-51
Cargo bed .......................................... 4-53
Adjusting the front shock absorber 
assemblies ....................................... 4-59
Adjusting the rear shock absorber 
assemblies ....................................... 4-73
Trailer hitch bracket ........................... 4-87
Auxiliary DC jack ................................ 4-89
PRE-OPERATION CHECKS ................... 5-1
Front and rear brakes .......................... 5-7
Fuel .................................................... 5-11
Engine oil ........................................... 5-15
Coolant............................................... 5-17
Final gear oil ...................................... 5-21
Differential gear oil ............................. 5-21
Accelerator pedal ............................... 5-23
Seat belts ........................................... 5-23
Steering.............................................. 5-25
Fittings and fasteners......................... 5-25
Lights ................................................. 5-25
Switches............................................. 5-27
Tires ................................................... 5-29
5
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2-13
WARNING
Always turn off the engine when refueling.
Do not refuel right after the engine has
been running and is still very hot.
Do not spill gasoline on the engine or ex-
haust pipe/muffler when refueling. Never
refuel while smoking, or while in the vicini-
ty of sparks, open flames, or other sources
of ignition such as the pilot lights of water
heaters and clothes dryers. Gasoline can
catch fire and you could be burned.
When transporting the vehicle in another
vehicle, be sure it is kept in an upright po-
sition. Otherwise, fuel may leak out of the
carburetor or fuel tank.
Gasoline is poisonous. If you should swal-
low some gasoline or inhale a lot of gaso-
line vapor, or get some gasoline in your
eyes, see your doctor immediately. If gaso-
line spills on your skin, wash with soap
and water. If gasoline spills on your cloth-
ing, change your clothes.
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4-5
1.
On-Command differential gear lock indicator light “DIFF. LOCK”
2. Low-range indicator light “L”3. High-range indicator light “H”
4. Neutral indicator light “N”5. Reverse indicator light “R”
6. Parking brake indicator light “P”
7. On-Command four-wheel-drive/differential gear lock indicator 
“”/“”
8. Coolant temperature warning light “”
1. Témoin de commande de blocage du différentiel “DIFF. LOCK”
2. Témoin de la gamme basse “L”3. Témoin de la gamme haute “H”
4. Témoin de point mort “N”5. Témoin de la marche arrière “R”
6. Témoin du frein de stationnement “P”
7. Indicateur de commande de transmission quatre roues motrices/blocage 
du différentiel “”/“”
8. Témoin d’alerte de la température du liquide de refroidissement “”
1. Luz indicadora del interruptor manual de bloqueo del diferencial 
“DIFF. LOCK”
2. Luz indicadora de marcha corta “L”
3. Luz indicadora de marcha larga “H”
4. Luz indicadora de punto muerto “N”
5. Luz indicadora de marcha atrás “R”
6. Luz indicadora del freno de estacionamiento “P”
7. Indicador de interruptor manual de tracción en las cuatro ruedas/
bloqueo del diferencial “”/“”
8. Luz de aviso de la temperatura del líquido refrigerante “”
DIFF.
LOCK
DIFF.
LOCK
DIFF.
LOCK
EVU00150
Indicator and warning lights 
EVU01161
On-Command four-wheel-drive/differential
gear lock indicator “”/“” 
The On-Command four-wheel-drive indicator “”
comes on when the On-Command four-wheel-
drive switch is set to the “4WD” position.
The On-Command differential gear lock indicator
“” in the On-Command four-wheel-drive indica-
tor also comes on when the On-Command differ-
ential gear lock switch is set to the “LOCK”
position.NOTE:
Due to the synchronizing mechanism in the dif-
ferential gear case, the four-wheel-drive indica-
tor may not come on until the vehicle starts
moving.
When the On-Command differential gear lock
switch is set to “LOCK”, the indicator “” will
flash until the differential gear is locked.
DIFF.
LOCK
DIFF.
LOCK
DIFF.
LOCK
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8-137
EVU01530
Troubleshooting
Although Yamaha vehicles receive a rigid inspec-
tion before shipment from the factory, trouble may
occur during operation. Any problem in the fuel,
compression, or ignition systems can cause poor
starting and loss of power. The troubleshooting
chart describes a quick, easy procedure for mak-
ing checks. If your vehicle requires any repair, take
it to a Yamaha dealer. 
The skilled technicians at a Yamaha dealership
have the tools, experience, and know-how to prop-
erly service your vehicle. Use only genuine
Yamaha parts on your vehicle. Imitation parts may
look like Yamaha parts, but they are often inferior.
Consequently, they have a shorter service life and
can lead to expensive repair bills.
WARNING
Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe in-
jury or property damage. Make sure there are
no open flames or sparks in the area, including
pilot lights from water heaters or furnaces.
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10-6
Bulb voltage, wattage × quantity:
Headlight 12 V 30.0 W/30.0 W × 2
Tail/brake light 12 V 5.0 W/21.0 W × 2
Indicator lights:
Neutral indicator light LED
Reverse indicator light LED
Coolant temperature warning light LED
Parking brake indicator light LED
On-Command four-wheel-drive/differential gear 
lock indicatorLCD
High-range indicator light LED
Low-range indicator light LED
On-Command differential gear lock indicator light LED
Specified fuses: 
Main fuse 30.0 A
Headlight fuse 15.0 A
Ignition fuse 10.0 A
Auxiliary DC jack fuse 10.0 A
Four-wheel-drive motor fuse 3.0 A
Carburetor warmer fuse 10.0 A
Signaling system fuse 10.0 A
Backup fuse 10.0 AModel YXR66FSEW
EE.book  Page 6  Friday, October 6, 2006  3:36 PM