2005 YAMAHA YFZ450 warning

4-39
EBU14102
Rear shock absorber adjustment
The spring preload, rebound damping and com-
pression damping forces of the rear shock absorb-
er can be adjusted to suit the rider’s weight and the
riding conditions.
WARNING
_ This shock absorber contains highly pressur-
ized nitrogen gas. Read and understand the
following information before handling the
shock absorber.

Do not tamper with or attempt to open the
cylinder assembly.


Do not subject the shock absorber to an
open flame or other high heat source. This
may cause the unit to explode due to ex-
cessive gas pressure.


Do not deform or damage the cylinder in
any way. Cylinder damage will result in
poor damping performance.


Take the shock absorber to a Yamaha deal-
er for any service.
_
U5TG61.book Page 39 Friday, April 2, 2004 11:28 AM

4-51
CAUTION:_ Never turn an adjusting mechanism beyond
the minimum and maximum settings. _
WARNING
_ Suspension components become hot during
operation. Never touch the compression
damping force adjusting screw, the rebound
damping force adjusting screw or the oil reser-
voir with your bare hand or skin until suspen-
sion components have cooled. _
U5TG61.book Page 51 Friday, April 2, 2004 11:28 AM

5-4
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. _
AVERTISSEMENT
_ Toujours effectuer ces contrôles avant chaque départ afin de s’assurer que le VTT peut être utilisé en toute sécu-
rité. Toujours respecter les procédés et intervalles de contrôle et d’entretien repris dans ce manuel. Omettre ces
contrôles 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 condicio-
nes de funcionar sin peligro. Seguir siempre los procedimientos y programas de inspección y mante-
nimiento descritos en el Manual del Propietario. Si no se inspecciona la máquina, aumenta el riesgo de
accidente o avería. _ U5TG61.book Page 4 Friday, April 2, 2004 11:28 AM

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 pages 8-79–
8-81.)
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. _
U5TG61.book Page 7 Friday, April 2, 2004 11:28 AM

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.
_
U5TG61.book Page 11 Friday, April 2, 2004 11:28 AM

5-17
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. _
EBU04980
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
8-101–8-109 for details.)
EBU10830
Throttle lever
Check to see that the throttle lever operates cor-
rectly. It must open smoothly and spring back to
the idle position when released. Have a Yamaha
dealer repair as necessary for proper operation.
U5TG61.book Page 17 Friday, April 2, 2004 11:28 AM

5-21
EBU01580
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.ACE-01E
Manufacturer Size Type
Front DUNLOP AT21
× 7R-10KT331A
Radial
Rear DUNLOP AT20
× 10R-9KT355
Radial
U5TG61.book Page 21 Friday, April 2, 2004 11:28 AM

6-1
EBU01620
1-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. _
U5TG61.book Page 1 Friday, April 2, 2004 11:28 AM