light YAMAHA YFM660R 2001 User Guide

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PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Brakes• Check operation, free play, fluid level and fluid leakage.
• Fill with DOT 4 brake fluid if necessary.5-5 ~ 5-7,
8-59 ~ 8-69
Clutch• Check operation, condition and lever free play. 8-75
Parking brake• Check operation, condition and cable slack. 8-71 ~ 8-73
Fuel• Check fuel level.
• Fill with fuel if necessary.5-9 ~ 5-11
Engine oil• Check oil level.
• Fill with oil if necessary.5-13 ~ 5-15,
8-17 ~ 8-29
Coolant reservoir• Check coolant level.
• Fill with coolant if necessary.5-17, 8-31
Drive chain• Check chain slack and condition.
• Adjust if necessary.5-19, 8-77 ~ 8-83
Throttle• Check for proper throttle cable operation. 5-21, 8-57
Wheels and tires• Check tire pressure, wear and damage.5-23 ~ 5-29,
8-93 ~ 8-95
Fittings and Fasteners• Check all fittings and fasteners. 5-21
Lights• Check for proper operation. 5-21, 8-105 ~ 8-115

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Throttle lever
Check to see that the throttle lever operates
correctly. It must open smoothly and spring
back to idle position when released. Repair as
necessary for proper operation.
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Fittings and Fasteners
Always check the tightness of chassis fittings
and fasteners before a ride. Take the machine
to a Yamaha dealer or refer to the Service Man-
ual for correct tightening torque.
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Lights
Check the headlight and tail/brake light to
make sure they are in working condition. Re-
pair as necessary for proper operation.
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Switches
Check the operation of the headlight switch,
engine stop switch and any other switches. Re-
pair as necessary for proper operation.

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1. Fully open 2. Half open
3. Closed
1. Complètement ouvert 2. Mi-ouvert
3. Fermé
1. Abre completamente 2. Semiabierto
3. Cerrado
NOTE:
This model is equipped with an ignition circuit
cut-off system. The engine can be started un-
der the following conditions.


When the transmission is in neutral. The
neutral indicator light should come on. If
the light does not come on, ask a Yamaha
dealer to inspect it.


When the clutch is disengaged with the
transmission in any position. However, it
is recommended to shift into neutral be-
fore starting the engine.
5. Use the starter (choke) in reference to the
figure:
Position
1: Cold engine start-
ambient temperature below 5 ˚C.
Position
2: Cold engine start-
ambient temperature at 0 ˚C ~
30˚C and warming up position.
Position
3: Cold engine start-
ambient temperature above
25˚C and warm engine start po-
sition.

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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.
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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.
NOTE:
When the parking brake is used, engine speed
is limited to 2,300 r/min. Be sure the parking
brake is released before moving the throttle le-
ver. Otherwise, the engine will misfire, pre-
venting normal operation.

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Reverse knob operation and reverse driving
CAUTION:
Before shifting, stop the machine and return
the throttle lever to its closed position. Other-
wise the transmission may be damaged.
1. Bring the machine to a complete stop, re-
turn the throttle lever to the closed posi-
tion, apply the clutch lever, and shift the
transmission into first gear.
2. While applying the rear brake pedal, turn
the reverse knob clockwise with your right
hand.
3. Shift the transmission into reverse by
pressing down on the shift pedal.
NOTE:
When in reverse, the reverse indicator light
should be on. If the light does not come on, ask
a Yamaha dealer to inspect the machine.
1. Reverse knob
2. Shift pedal
1. Bouton de marche arrière
2. Pédale de sélection
1. Botón de marcha atrás
2. Pedal del cambio

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1. Shift pedal N. Neutral
R. Reverse
1. Pédale de sélection N. Point mort
R. Marche arrière
1. Pedal del cambio N. Punto muerto
R. Marcha atrás
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Shifting
This model has a 5-speed forward and 1-speed
reverse transmission. The transmission allows
you to control the amount of power you have
available at a given speed or for starting, accel-
erating, climbing hills, etc. To shift into neutral,
return the throttle lever to its original position,
apply the clutch and repeatedly depress the
shift pedal until it stops. When it stops, it will
be in first gear. Raise the pedal slightly to neu-
tral.
CAUTION:
1. Do not coast for long periods with the en-
gine off, and do not tow the machine a
long distance. Even in neutral position,
the transmission is only properly lubricat-
ed when the engine is running. Inade-
quate lubrication may cause damage.
2. Always use the clutch when changing
gears. The engine, transmission and driv-
etrain are not designed to withstand the
shock of forced shifting and can be dam-
aged by shifting without the clutch.

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As you approach a curve, slow down and begin
to turn the handlebars in the desired direction.
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 maneuver will let the
wheel on the inside of the turn slip slightly, al-
lowing 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.
1. Lean towards inside of turn.
2. Support your weight on the outer footrest.
1. Se pencher vers l’intérieur du virage.
2. Faire reposer son poids sur le repose-pied extérieur.
1. Inclínese hacia el interior del giro.
2. Descanse su peso en el descansapie externo.

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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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1. Headlight assembly 2. Bolt (× 2)
1. Bloc de phare 2. Boulon (× 2)
1. Conjunto faro 2. Perno (× 2)
1. Coupler
1. Coupleur
1. Acoplador
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Replacing the headlight bulb
1. Remove the headlight assembly by re-
moving the bolts.
2. Disconnect the coupler.

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1. Screw
1. Vis
1. Tornillo
1. Screw
1. Vis
1. Tornillo
3. Remove the screw.
4. Remove the headlight cover from the
headlight assembly.
5. Remove the screw and pull the headlight
unit out from its case.
NOTE:
Pull outward on the rear of the headlight unit,
and then pull outward on the front.