2001 YAMAHA YFM400F light

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a. Starter (choke) lever
1. Fully open
2. Half open
3. Closed
a. Starter (enrichisseur)
1. Complètement ouvert
2. Mi-ouvert
3. Fermé
a. Starter (choke)
1. Abre completamente
2. Semiabierto
3. Cerrado
NOTE:

l
When the drive select lever is in the neu-
tral or park position, if either indicator
light does not come on, ask a Yamaha
dealer to inspect its electric circuit.
l
The engine can be started in any gear if
the rear brake lever is applied. However, it
is recommended to shift into neutral or
park before starting the engine.
5. Use the starter (choke) in reference to the
figure:
Position
1
: Cold engine start- ambient tem-
perature below 5 ˚C.
Position
2
: Cold engine start- ambient tem-
perature at 0 ˚C ~ 30 ˚C and
warming up position.
Position
3
: Cold engine start- ambient tem-
perature above 25 ˚C and warm
engine start position.
6. Completely close the throttle lever and
start the engine by pushing the start
switch.

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EBU00180
Starting a warm engine
To start a warm engine, refer to the “Starting a
cold engine” section. The starter (choke)
should not be used. The throttle should be
opened slightly.
EBU00182
Warming up
To get maximum engine life, always warm up
the engine before starting off. Never accelerate
hard with a cold engine! To see whether or not
the engine is warm, check if it responds to the
throttle normally with the starter (choke)
turned off.

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1. Drive select lever
a. L (Low)
b. H (High)
c. N (Neutral)
d. R (Reverse)
e. P (Park)
1. Levier de présélection
a. L (Rapport inférieur)
b. H (Rapport supérieur)
c. N (Point mort)
d. R (Marche arrière)
e. P (Stationnement)
1. Palanca de selección de marcha
a. L (Baja)
b. H (Alta)
c. N (Punto muerto)
d. R (Marcha atrás)
e. P (Estacionamiento)
2. Shifting: Neutral to Reverse and Reverse
to Park
NOTE:

The drive select lever cannot be shifted into or
from reverse or park without applying the rear
brake.
a. Bring the machine to a complete stop and
return the throttle lever to the closed posi-
tion.
b. Apply the rear brake pedal.
c. Shift from neutral to reverse or from re-
verse to park and vice versa by moving
the drive select lever along the shift guide.
NOTE:

l
When in reverse, the reverse indicator
light should be on. If the light does not
come on, ask a Yamaha dealer to inspect
the reverse indicator light electrical circuit.
l
Due to the synchronizing mechanism in
the engine, the light may not come on un-
til the ATV starts moving.

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1. Lean towards inside of turn.
2. Support your weight on the outer footboard.
1. Se pencher vers l’intérieur du virage.
2. S’appuyer sur le repose-pied extérieur.
1. Inclínese hacia el interior del giro.
2. Descanse su peso en el descansapie exterior.
As you approach a curve, slow down and be-
gin to turn the handlebars in the desired direc-
tion. As you do so, put your weight on the
footboard to the outside of the turn (opposite
your desired direction) and lean your upper
body into the turn. Use the throttle to maintain
an even speed through the turn. This maneu-
ver will let the wheel on the inside of the turn
slip slightly, allowing the ATV to make the turn
properly.
This procedure should be practiced at slow
speed many times in a large off-road area with
no obstacles. If an incorrect technique is used,
your ATV may continue to go straight. If the
ATV doesn’t turn, come to a stop and then
practice the procedure again. If the riding sur-
face is slippery or loose, it may help to position
more of your weight over the front wheels by
moving forward on the seat.
Once you have learned this technique you
should be able to perform it at higher speeds
or in tighter curves.

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CROSSING A SLOPE
Traversing a sloping surface on your ATV re-
quires you to properly position your weight to
maintain proper balance. Be sure that you
have learned the basic riding skills on flat
ground before attempting to cross a sloping
surface. Avoid slopes with slippery surfaces or
rough terrain that may upset your balance.
As you travel across a slope, lean your body in
the uphill direction. It may be necessary to cor-
rect the steering when riding on loose surfaces
by pointing the front wheels slightly uphill.
When riding on slopes be sure not to make
sharp turns either up or down hill.

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7. Apply a light coat of engine oil to the
O-ring of the new oil filter.NOTE:Make sure the O-ring is seated properly.
8. Install the oil filter and tighten it to the
specified torque with an oil filter wrench.
Tightening torque:
Oil filter:
17 Nm (1.7 m·kg)
1. Torque wrench
1. Clé dynamométrique
1. Llave de apriete

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EBU00680
Spark plug inspection
Removal
1. Remove the spark plug cap.
2. Use the spark plug wrench in the tool kit
to remove the spark plug as shown.
Inspection
The spark plug is an important engine compo-
nent and is easy to inspect. The condition of
the spark plug can indicate the condition of the
engine.
The ideal color on the white insulator around
the center electrode is a medium-to-light tan
color for a ATV that is being ridden normally.
1. Spark plug wrench
1. Clé à bougie
1. Llave de bujía1. Spark plug cap
1. Capuchon de bougie
1. Tapa de bujía

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EBU00745
Fuse replacement
1. The fuse cases are under the seat.
2. If a fuse is blown, turn off the main switch
and the switch of the circuit in question.
Then, install a new fuse of the specified
amperage. Turn on the main switch. If the
fuse immediately blows again, consult a
Yamaha dealer.
Specified fuses:
Main fuse: 30 A
Headlight fuse: 15 A
Ignition fuse: 10 A
Auxiliary DC jack fuse: 10 A
Four-wheel-drive fuse: 3 A
Signal fuse (horn): 10 A
1. Main fuse 2. Spare fuse
1. Fusible principal 2. Fusible de rechange
1. Fusible principal 2. Fusible de repuesto1. Fuse box
1. Boîte à fusibles
1. Caja de fusibles