warning YAMAHA YFM400F 2001 User Guide

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The coolant temperature warning light circuit
can be checked according to the procedure on
page 4-7.
CAUTION:

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The engine may overheat if the ATV is
overloaded. If this happens, reduce the
load to specification.
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Restart after making sure that the light is
out. Continuous use while the light is on
may cause damage to the engine.
EBU00605
Four-wheel-drive indicator light “ ”
This indicator light comes on when the
2WD/4WD switch is in the 4WD position.
NOTE:

Due to the synchronizing mechanism in the dif-
ferential gear case, the light may not come on
until the ATV starts moving.

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EBU00714
Coolant temperature warning light checking method
ACB-09E
Turn the main switch to “ON” and
the engine stop switch to “ ”.
Coolant temperature warning
light does not come on.
Coolant temperature
warning light comes on.
Coolant temperature
warning light does
not come on.
Coolant temperature and
electrical circuit are OK.
Go ahead with riding.
Push the start switch with the
transmission in the neutral position.
Ask a Yamaha dealer to
inspect the electrical circuit.
Coolant temperature
warning light comes
on momentarily.

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EBU00061
On command four-wheel drive switch
“2WD/4WD”
To change from two-wheel drive (2WD) to
four-wheel drive (4WD), stop the ATV and set
the switch to the 4WD position.
To change from four-wheel drive (4WD) to
two-wheel drive (2WD), stop the ATV and set
the switch to the 2WD position.
WARNING

Always stop the ATV before changing from
2WD to 4WD or from 4WD to 2WD. The ATV
handles differently in 2WD than in 4WD in
some circumstances. Changing from 2WD to
4WD or vice-versa while moving may cause
the ATV to unexpectedly handle differently.
This could distract the operator and increase
the risk of losing control and an accident.
1. Four-wheel drive switch “2WD/4WD”
1. Contacteur de commande du mode de traction
“2WD/4WD”
1. Interruptor de modo de tracción “2WD/4WD”

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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 engine will return to an idle any time
the hand is removed 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 op-
eration 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.
1. Throttle lever
1. Levier d’accélération
1. Palanca de aceleración

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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 ad-
juster limits the maximum engine power avail-
able 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. Al-
ways make sure the throttle lever free play is
adjusted to 3 ~ 5 mm. See page 8-87.
1. Locknut 2. Adjusting bolt
1. Contre-écrou 2. Boulon de réglage
1. Contratuerca 2. Perno de ajuste

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EBU00608
Drive select lever
The drive select lever is used to shift your ma-
chine into the low, high, neutral, reverse and
park positions. (Refer to pages 6-11 ~ 6-15 for
the drive select lever operation.)
EBU00667
Recoil starter
Firmly grasp the handle and pull slightly until
engagement can be felt. Then pull forcefully,
being careful not to pull the rope all the way
out.
WARNING
Shift the transmission in neutral or set the
shift lever to the park position before starting
the engine or the ATV could start to move un-expectedly, which could cause an accident.
1. Drive select lever
1. Levier de présélection
1. Palanca de selección de marcha1. Recoil starter
1. Lanceur à réenroulement
1. Arranque por tracción de cable

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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 ofstability, which could lead to an accident.
1. Special wrench
1. Clé spéciale
1. Llave especial

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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.

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4. Brake operation
Test the brakes at slow speed after start-
ing out to make sure they are working
properly. If the brakes do not provide
proper braking performance, inspect the
brake pads for wear. (See page 8-89.)
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.

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1. Fuel level 2. Filler tube
1. Niveau de carburant 2. Tube de remplissage
1. Nivel de combustible 2. Tubo del relleno
WARNING

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Do not overfill the fuel tank. Fuel expands
when it heats up. If the fuel tank is over-
filled, fuel could spill out due to heat from
the engine or the sun.
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Be careful not to spill fuel, especially on
the engine or exhaust pipe which can
cause a fire and severe injury. Wipe up
any spilled fuel immediately.
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Do not refuel right after the engine has
been running and is still very hot.
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Be sure the fuel tank cap is closed secure-
ly.