2005 YAMAHA BIG BEAR PRO 400 engine

EBU00015
1-CONTENTS
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ....................... 1-1
SAFETY INFORMATION ......................... 2-1
DESCRIPTION AND MACHINE
IDENTIFICATION .................................... 3-1
Identification number records ............... 3-3
Key identification number ..................... 3-5
Vehicle identification number ............... 3-7
Model label ........................................... 3-9
CONTROL FUNCTIONS ......................... 4-1
Main switch........................................... 4-1
Indicator and warning lights.................. 4-3
Speedometer ........................................ 4-9
Fuel gauge ......................................... 4-11
Handlebar switches ............................ 4-13
Throttle lever ...................................... 4-17
Speed limiter ...................................... 4-19
Front brake lever ................................ 4-21
Brake pedal and rear brake lever ....... 4-23
Parking brake ..................................... 4-25
Shift pedal .......................................... 4-27
1234
Drive select lever ............................... 4-27
Recoil starter ...................................... 4-29
Fuel tank cap ..................................... 4-29
Fuel cock............................................ 4-31
Starter (choke) ................................... 4-33
Seat.................................................... 4-35
Storage box........................................ 4-37
Front carrier ....................................... 4-37
Rear carrier ........................................ 4-37
Front shock absorber adjustment ...... 4-39
Rear shock absorber adjustment ....... 4-41
Auxiliary DC jack ................................ 4-43
PRE-OPERATION CHECKS ................... 5-1
Front and rear brakes .......................... 5-5
Fuel ...................................................... 5-9
Engine oil/transfer gear oil ................. 5-13
Final gear oil/Differential gear oil ....... 5-15
Throttle lever ...................................... 5-15
Fittings and fasteners......................... 5-17
Lights ................................................. 5-17
Switches............................................. 5-17
Tires ................................................... 5-19
How to measure tire pressure ............ 5-23
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Tire wear limit......................................5-25
OPERATION ............................................6-1
Starting a cold engine ...........................6-3
Starting a warm engine .........................6-9
Warming up...........................................6-9
Drive select lever operation and
reverse driving ..................................6-11
Reverse lock release wire ...................6-15
Shifting ................................................6-17
To start out and accelerate .................6-19
To decelerate ......................................6-21
Engine break-in ...................................6-23
Parking ................................................6-27
Parking on a slope ..............................6-27
Accessories and loading .....................6-29
RIDING YOUR ATV..................................7-1
Getting to know your ATV .....................7-3
Ride with care and good judgement .....7-5
Be careful where you ride ...................7-27
Turning your ATV ................................7-41
Climbing uphill.....................................7-47
Riding downhill ....................................7-57
Crossing a slope .................................7-61
Crossing through shallow water ..........7-65
Riding over rough terrain ....................7-69
67
Sliding and skidding............................ 7-71
What to do if ....................................... 7-75
What to do .......................................... 7-75
PERIODIC MAINTENANCE AND
ADJUSTMENT ......................................... 8-1
Owner’s manual and tool kit ................. 8-3
Periodic maintenance/lubrication.......... 8-7
Engine oil and oil filter element........... 8-17
Transfer gear oil replacement............. 8-29
Final gear oil ....................................... 8-33
Differential gear oil replacement ......... 8-39
Axle boots ........................................... 8-41
Spark plug inspection ......................... 8-43
Air filter cleaning ................................. 8-47
Carburetor adjustment ........................ 8-55
Idle speed adjustment ........................ 8-57
Valve clearance adjustment ............... 8-59
Select lever safety system cable
adjustment ........................................ 8-59
Throttle lever adjustment .................... 8-61
Front brake pad check ........................ 8-61
Rear brake shoe inspection ................ 8-63
Brake fluid level check ........................ 8-63
Brake fluid replacement ...................... 8-67
Front brake lever free play.................. 8-69
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2-1
SAFETY INFORMATION
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AN ATV IS NOT A TOY AND CAN BE HAZARD-OUS TO OPERATE.
An ATV handles differently
from other vehicles including motorcycles and
cars. A collision or rollover can occur quickly, even
during routine maneuvers such as turning and
riding on hills or over obstacles, if you fail to take
proper precautions.
SEVERE INJURY OR DEATH can result if you do
not follow these instructions:


Read this manual and all labels carefully and
follow the operating procedures described.


Never operate an ATV without proper training
or instruction.


Always follow the age recommendation:
– A child under 16 years old should never oper-
ate an ATV with engine size greater than 90cc.
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2-15
WARNING
_

Always turn off the engine when refueling.


Do not refuel immediately 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 in the vicinity 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 ATV in another ve-
hicle, be sure it is kept upright and that the
fuel cock is in the “OFF” position. Other-
wise, 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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2-17
WARNING
_ Always operate your ATV in an area with ade-
quate ventilation. Never start or run the engine
in a closed area. Exhaust fumes are poisonous
and may cause loss of consciousness and
death within a short time. _
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4-1
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1-CONTROL FUNCTIONS
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Main switch
Functions of the respective switch positions are as
follows:
ON:
The engine can be started only at this position and
the headlights and taillight come on when the light
switch is on.
OFF:
All electrical circuits are switched off. The key can
be removed in this position.
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4-3 1. Reverse indicator light “REVERSE”
2. Neutral indicator light “NEUTRAL”
3. Oil temperature warning light “”
1. Témoin de marche arrière “REVERSE”
2. Témoin de point mort “NEUTRAL”
3. Témoin d’avertissement de la température d’huile “”
1. Luz de control de marcha atrás “REVERSE”
2. Luz de control de punto muerto “NEUTRAL”
3. Luz de aviso de la temperatura del aceite “”
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Indicator and warning lights
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Reverse indicator light “REVERSE”
This indicator light comes on when the drive select
lever is in reverse.
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Neutral indicator light “NEUTRAL”
This indicator light comes on when the transmis-
sion is in neutral.
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Oil temperature warning light “”
When the oil temperature reaches a specified lev-
el, this light comes on to warn that the engine oil
temperature is too hot. If the light comes on during
operation, stop the engine as soon as it is safe to
do so and allow the engine to cool down for about
10 minutes.CAUTION:_

The engine may overheat if the ATV is
overloaded. If this happens, reduce the
load to specification.


Restart after making sure that the light is
out. Continuous use while the light is on
may cause damage to the engine.
_
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4-5
EBU00733
Oil temperature warning light checking method
ACB-10E
Turn the main switch to “ON” and the
engine stop switch to “”.
Oil temperature warning
light does not come on.
Oil temperature warning
light comes on.
Check engine oil temperature.
Oil temperature warning
light does not come on.
Engine oil temperature and
electrical circuit are OK. Go
ahead with riding.
Push start switch with the
transmission in neutral.
Ask a Yamaha dealer to
inspect the electrical circuit.
Oil tempera-
ture is low.
Allow to cool.
Oil tempera-
ture is high.
Oil temperature
warning light comes
on momentarily.
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