2004 YAMAHA YFM660R warning

5-7
Brake fluid leakage
Check to see if any brake fluid is leaking out of the
pipe joints or brake fluid reservoirs. Apply the
brakes firmly for one minute. If there is any leak-
age, have a Yamaha dealer inspect the brake sys-
tem.
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, in-
spect the brake pads for wear. (See page 8-63.)
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 a Yamaha dealer check for the cause. _
U5LP63.book Page 7 Monday, March 10, 2003 2:06 PM

5-11 1. Fuel tank filler tube
2. Fuel level
1. Tube de remplissage du réservoir de carburant
2. Niveau de carburant
1. Tubo de llenado del depósito de combustible
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.
_
U5LP63.book Page 11 Monday, March 10, 2003 2:06 PM

5-19
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 under
pressure. Always put a thick rag over the cap
when opening. Allow any remaining pressure
to escape before completely removing the cap. _
EBU00498
Chain
Check the general condition of the chain and
check the chain slack before every ride. Lubricate
and adjust the chain as necessary. (See pages
8-83–8-89 for details.)
U5LP63.book Page 19 Monday, March 10, 2003 2:06 PM

5-23
EBU00158
Tires
Always use the recommended tires.
WARNING
Use of improper tires on this ATV, or operation
of this ATV with improper or uneven tire pres-
sure, may cause loss of control, increasing
your risk of accident.
Pay attention to the following.
1. The tires listed below have been approved
by Yamaha Motor Co., Ltd. for this model.
Other tire combinations are not recom-
mended.
Manufacturer Size Type
Front DUNLOP AT21
× 7-10KT331
Radial
Rear DUNLOP AT20
× 10-9KT335
Radial
U5LP63.book Page 23 Monday, March 10, 2003 2:06 PM

6-1
EBU00162
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.
U5LP63.book Page 1 Monday, March 10, 2003 2:06 PM

6-3
EBU00815
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 engine
stop switch to “”.
4. Shift the transmission into neutral.
U5LP63.book Page 3 Monday, March 10, 2003 2:06 PM

6-13
4. Check behind you for people or obstacles,
and then release the brake pedal.
5. Open the throttle lever gradually, and at the
same time, release the clutch lever slowly,
and continue to watch to the rear while back-
ing.
WARNING
_ Improper operation in reverse could make you
hit an obstacle or person behind you, resulting
in serious injury. When you shift into reverse,
make sure there are no obstacles or people be-
hind you. When it is safe to proceed, go slowly. _
U5LP63.book Page 13 Monday, March 10, 2003 2:06 PM

6-19
6. Shift into second gear (be careful not to shift
into neutral).
7. Open the throttle part way and gradually re-
lease the clutch lever.
8. Follow the same procedure when shifting to
the next higher gear.
WARNING
Opening the throttle abruptly or releasing the
clutch lever too quickly would increase the
chance of an accident or could make the ma-
chine wheelie including overturn. Always open
the throttle gradually and release the clutch le-
ver gradually.
U5LP63.book Page 19 Monday, March 10, 2003 2:06 PM