warning YAMAHA YFM660R 2001 User Guide

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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 con-
trol 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.

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Front shock absorber adjustment
The spring preload can be adjusted to suit the
rider’s weight and riding conditions.
Adjust the spring preload as follows:
To increase the spring preload, turn the adjust-
er in direction a.
To decrease the spring preload, turn the ad-
juster 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: C
A
− Minimum (Soft)
E
− Maximum (Hard)

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CAUTION:
Never turn an adjusting mechanism beyond
the minimum and maximum settings.
NOTE:
Although the total number of clicks of a damp-
ing force adjusting mechanism may not exact-
ly match the above specifications due to small
differences in production, the actual number of
clicks always represents the entire adjusting
range. To obtain a precise adjustment, it would
be advisable to check the number of clicks of
each damping force adjusting mechanism and
to modify the specifications as necessary.
WARNING
Suspension components become hot during
operation. Never touch the damping force ad-
justing mechanisms or the oil reservoir with
your bare hand or skin until suspension com-
ponents have cooled.

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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 Owner’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 sécurité.
Toujours respecter les procédés et intervalles de contrôle et d’entretien repris dans ce manuel. Omettre ces con-
trôles 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 condiciones
de funcionar sin peligro.
Seguir siempre los procedimientos y programas de inspección y mantenimiento descritos en el
Manual del Usuario. Si no se inspecciona la máquina, aumenta el riesgo de accidente o avería.

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3. Brake fluid leakage
Check to see if any brake fluid is leaking
out of the pipe joints or master cylinder.
Apply the brakes firmly for one minute. If
there is any leaking, have the machine in-
spected by a Yamaha dealer.
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 8-59.)
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. Filler tube 2. Fuel level
1. Tube de remplissage 2. Niveau de carburant
1. Tubo de llenado 2. Nivel de combustible
WARNING


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.


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.


Do not refuel right after the engine has
been running and is still very hot.


Be sure the fuel tank cap is closed secure-
ly.

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WARNING
Wait for the engine and radiator to cool before
removing the radiator cap. You could be
burned by hot fluid and steam blown out un-
der pressure. Always put a thick rag over the
cap when opening. Allow any remaining pres-
sure to escape before completely removing
the cap.
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Chain
Check the general condition of the chain and
check the chain slack before every ride. Lubri-
cate and adjust the chain as necessary. (See
pages 8-77 ~ 8-83 for details.)

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Tires
Always use the recommended tires.
WARNING
Use of improper tires on this ATV, or opera-
tion of this ATV with improper or uneven tire
pressure, may cause loss of control, increasing
your risk of accident.
Pay attention to the following.
1. The tires listed below have been ap-
proved by Yamaha Motor Co., Ltd. for this
model. Other tire combinations are not
recommended.
Manufacturer Size Type
Front DUNLOP AT21 × 7-10 KT331
Rear DUNLOP AT20 × 10-9 KT335

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OPERATION
Read the Owner’s Manual carefully before
riding the ATV.
WARNING
Read the Owner’s Manual carefully to become
familiar with all controls. Loss of control could
cause an accident or injury. If there is a control
or function you do not understand, ask your
Yamaha dealer.

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Starting a cold engine
WARNING
Always make sure all control cables work
smoothly before you begin riding in cold
weather. If the control cables are frozen or do
not work smoothly, you could be unable to
control the ATV, which could lead to an acci-
dent or collision.
1. Set the parking brake.
2. Turn the fuel cock to “ON”.
3. Turn the main switch to “ON” and the en-
gine stop switch to “ ”.
4. Shift the transmission into neutral.