2003 YAMAHA BIG BEAR PRO 400 warning

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.
EE.book Page 5 Monday, June 18, 2001 10:18 AM

4-17 1. Throttle lever
1. Levier d’accélération
1. Palanca de aceleración
EBU00063
Throttle lever
Once the engine is running, movement of the
throttle lever will increase the engine speed.
Regulate the speed of the machine by varying the
throttle position. Because the throttle is spring-
loaded, the machine will decelerate, and the en-
gine will return to an idle any time the hand is re-
moved from the throttle lever.
Before starting the engine, check the throttle to be
sure it is operating smoothly. Make sure it returns
to the idle position as soon as the lever is released.
WARNING
Malfunction of the throttle could make it diffi-
cult to speed up or slow down when you need
to. This could cause an accident. Check the
operation of the throttle lever before you start
the engine. If the throttle does not work
smoothly, check for the cause. Correct the
problem before riding the ATV or consult a
Yamaha dealer.
EE.book Page 17 Monday, June 18, 2001 10:18 AM

4-19 1. Locknut 2. Adjuster a. 12 mm
1. Contre-écrou 2. Vis de réglage
1. Contratuerca 2. Ajuste
EBU00565
Speed limiter
The speed limiter keeps the throttle from fully
opening, even when the throttle lever is pushed to
the maximum. Screwing in the adjuster limits the
maximum engine power available and decreases
the maximum speed of the ATV.
WARNING
Improper adjustment of the speed limiter and
throttle could cause throttle cable damage or
improper throttle operation. You could lose
control, have an accident or be injured. Do not
turn the speed adjuster out more than 12 mm
or the throttle cable could be damaged. Always
make sure the throttle lever free play is adjust-
ed to 3 ~ 5 mm. See page 8-55.
EE.book Page 19 Monday, June 18, 2001 10:18 AM

4-25 1. Lock plate
1. Verrou de stationnement
1. Placa de bloqueo
EBU00075
Parking brake
Use the parking brake when you have to start the
engine or park the machine, especially on a slope.
Apply the rear brake lever and push down the lock
plate to apply the parking brake. Squeeze the rear
brake lever to release the parking brake.
WARNING


Always set the parking brake before start-
ing the engine. The ATV could start mov-
ing unexpectedly if the parking brake is not
applied. This could cause loss of control or
a collision.


Always be sure you have released the
parking brake before you begin to ride. The
brake could overheat if you ride the ATV
without releasing the parking brake. You
could lose braking performance which
could cause an accident. You could also
wear out the brakes prematurely.
EE.book Page 25 Monday, June 18, 2001 10:18 AM

4-29 1. Recoil starter
1. Lanceur à réenroulement
1. Arranque por tracción de cable
1. Fuel tank cap
1. Bouchon de réservoir de carburant
1. Tapón del depósito de combustible
EBU00591
Recoil starter
Firmly grasp the handle and pull slightly until en-
gagement can be felt. Then pull forcefully, being
careful not to pull the rope all the way out.
WARNING
Put the transmission in neutral and set the
parking brake before starting the engine or the
ATV could start to move unexpectedly, which
could cause an accident.
EBU00092
Fuel tank cap
Remove the fuel tank cap by turning it counter-
clockwise.
EE.book Page 29 Monday, June 18, 2001 10:18 AM

4-39 a. Increase spring preload
b. Decrease spring preload
a. Augmente la précontrainte du ressort.
b. Diminue le précontrainte du ressort.
a. Aumentar la carga previa del resorte
b. Reducir la carga previa del resorte
EBU00633
Front shock absorber adjustment
The spring preload can be adjusted to suit the rid-
er’s weight and riding conditions.
Adjust the spring preload as follows:
To increase the spring preload, turn the adjuster in
direction
a.
To decrease the spring preload, turn the adjuster
in direction
b.
WARNING
Always adjust the shock absorbers on the left
and right side to the same setting. Uneven ad-
justment can cause poor handling and loss of
stability, which could lead to an accident.
Standard position: B
A - Minimum (Soft)
E - Maximum (Hard)
EE.book Page 39 Monday, June 18, 2001 10:18 AM

5-4
WARNING
Always inspect your ATV each time you use it to make sure the ATV is in safe operating condition.
Always follow the inspection and maintenance procedures and schedules described in the Own-
er’s Manual. Failure to inspect increases the possibility of an accident or equipment damage.
AVERTISSEMENT
_ Toujours effectuer ces contrôles avant chaque départ afin de s’assurer que le VTT peut être utilisé en toute sécu-
rité. Toujours respecter les procédés et intervalles de contrôle et d’entretien repris dans ce manuel. Omettre ces
contrôles accroît les risques d’accident ou d’endommagement du véhicule. _
ADVERTENCIA
Inspeccionar siempre el ATV cada vez que vaya a utilizarse, para asegurarse de que está en condicio-
nes de funcionar sin peligro. Seguir siempre los procedimientos y programas de inspección y mante-
nimiento descritos en el Manual del Propietario. Si no se inspecciona la máquina, aumenta el riesgo de
accidente o avería.EE.book Page 4 Monday, June 18, 2001 10:18 AM

5-7
Brake fluid leakage
Check to see if any brake fluid is leaking out of the
hose, joint or master cylinder of the front brake.
Apply the brake firmly for one minute. If the lever
moves slowly inward, there may be a leak in the
brake system. If there is any leakage, the brake
system should be inspected by a Yamaha dealer.
Brake operation
Test the brakes at slow speed after starting out to
make sure they are working properly. If the brakes
do not provide proper braking performance, inspect
the brakes for wear. (See pages 8-55 ~ 8-57.)
WARNING
_ Always check the brakes at the start of every
ride. Do not ride the ATV if you find any prob-
lem with the brakes or you could lose braking
ability, which could lead to an accident. If a
problem cannot be corrected by the adjust-
ment procedures provided in this manual,
have the ATV inspected by a Yamaha dealer. _
EE.book Page 7 Monday, June 18, 2001 10:18 AM