2005 YAMAHA YFZ450 tire pressure

EBU00150
1-CONTENTS
LOCATION OF THE WARNING
AND SPECIFICATION LABELS .............. 1-1
SAFETY INFORMATION ......................... 2-1
DESCRIPTION AND MACHINE
IDENTIFICATION .................................... 3-1
Identification number records ............... 3-3
Key identification number ..................... 3-5
Vehicle identification number ............... 3-5
Model label ........................................... 3-7
CONTROL FUNCTIONS ......................... 4-1
Main switch........................................... 4-1
Indicator and warning lights.................. 4-3
Handlebar switches .............................. 4-7
Throttle lever ...................................... 4-11
Speed limiter ...................................... 4-13
Clutch lever ........................................ 4-15
Brake lever ......................................... 4-17
Brake pedal ........................................ 4-17
Parking brake lever ............................ 4-19
Shift pedal .......................................... 4-21
Fuel tank cap ...................................... 4-21
1234
Fuel cock............................................ 4-23
Starter (choke) .................................. 4-25
Seat.................................................... 4-27
Front shock absorber adjustment ...... 4-29
Rear shock absorber adjustment ....... 4-39
PRE-OPERATION CHECKS ................... 5-1
Front and rear brakes .......................... 5-5
Fuel ...................................................... 5-9
Engine oil ........................................... 5-13
Coolant............................................... 5-15
Chain.................................................. 5-17
Throttle lever ...................................... 5-17
Fittings and fasteners......................... 5-19
Lights ................................................. 5-19
Switches............................................. 5-19
Tires ................................................... 5-21
How to measure tire pressure ............ 5-25
Tire wear limit..................................... 5-27
5
U5TG61.book Page 1 Friday, April 2, 2004 11:28 AM

2-13

Always be careful when skidding or sliding.
Learn to safely control skidding or sliding by
practicing at low speeds and on level, smooth
terrain. On extremely slippery surfaces, such
as ice, go slowly and be very cautious in order
to reduce the chance of skidding or sliding out
of control.


Never operate an ATV in fast flowing water or
in water deeper than that recommended in this
manual. Remember that wet brakes may have
reduced stopping ability. Test your brakes after
leaving water. If necessary, apply them several
times to let friction dry out the linings.


Always use the size and type of tires specified
in this manual.


Always maintain proper tire pressure as de-
scribed in this manual.
U5TG61.book Page 13 Friday, April 2, 2004 11:28 AM

5-1
EBU01130
1-PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Front brakeCheck operation, lever free play, fluid level and fluid leakage.
Fill with DOT 4 brake fluid if necessary.5-5–5-7, 8-79,
8-83–8-89
Rear brakeCheck operation, fluid level and fluid leakage.
Fill with DOT 4 brake fluid if necessary.5-5–5-7,
8-81–8-87, 8-91
ClutchCheck operation, condition and lever free play. 8-99
Parking brakeCheck operation, condition and cable length. 8-93–8-95
FuelCheck fuel level.
Fill with fuel if necessary.5-9–5-11
Engine oilCheck oil level.
Fill with oil if necessary.5-13, 8-23–8-39
Coolant reservoirCheck coolant level in reservoir.
Fill with coolant if necessary.5-15–5-17,
8-41–8-51
Drive chainCheck chain slack and condition.
Adjust if necessary.5-17, 8-101–8-109
ThrottleCheck for proper throttle cable operation and free play. 5-17, 8-77
Wheels and tiresCheck tire pressure, wear and damage.5-21–5-27,
8-121–8-123
Fittings and fastenersCheck all fittings and fasteners. 5-19
Lights and switchesCheck for proper operation.5-19, 8-97,
8-133–8-141
U5TG61.book Page 1 Friday, April 2, 2004 11:28 AM

5-23
2. The tires should be set to the recommend-
ed pressure:

Recommended tire pressure
Front 30 kPa (0.30 kgf/cm
2, 0.30 bar)
Rear 35 kPa (0.35 kgf/cm2, 0.35 bar)


Check and adjust tire pressures when the
tires are cold.


Tire pressures must be equal on both
sides.
3. Tire pressure below the minimum speci-
fied could cause the tire to dislodge from
the rim under severe riding conditions.
The following are minimums:
Front 27 kPa (0.27 kgf/cm
2, 0.27 bar)
Rear 32 kPa (0.32 kgf/cm2, 0.32 bar)
4. Use no more than the following pressures
when seating the tire beads.
Front 250 kPa (2.5 kgf/cm2, 2.5 bar)
Rear 250 kPa (2.5 kgf/cm2, 2.5 bar)
Higher pressures may cause the tire to burst.
Inflate the tires very slowly and carefully. Fast
inflation could cause the tire to burst.
_
U5TG61.book Page 23 Friday, April 2, 2004 11:28 AM

5-25 1. Low-pressure tire gauge
1. Manomètre basse pression pour pneus
1. Manómetro de baja presión
EBU14450
How to measure tire pressure
Use the low-pressure tire gauge.NOTE:_ The low-pressure tire gauge is included as stan-
dard equipment. Make two measurements of the
tire pressure and use the second reading. Dust or
dirt in the gauge could cause the first reading to be
incorrect. _Set pressure with tires cold. Set tire pressures to
the following specifications:ACE-03E
Recommended
pressureMinimum Maximum
Front30 kPa
(0.30 kgf/cm
2,
0.30 bar)27 kPa
(0.27 kgf/cm
2,
0.27 bar)33 kPa
(0.33 kgf/cm
2,
0.33 bar)
Rear35 kPa
(0.35 kgf/cm
2,
0.35 bar)32 kPa
(0.32 kgf/cm
2,
0.32 bar)38 kPa
(0.38 kgf/cm
2,
0.38 bar)
U5TG61.book Page 25 Friday, April 2, 2004 11:28 AM

7-15
WARNING
_ Always use the size and type tires specified in
the Owner’s Manual for this vehicle on pages
5-21–5-23. Always maintain proper tire pres-
sure as described in the Owner’s Manual on
page 5-25. Use of improper tires on this ATV,
or operation of this ATV with improper or un-
even tire pressure, may cause loss of control,
increasing your risk of an accident. _Do not operate at speeds too fast for your
skills or the conditions.
WARNING
_ Always go at a speed that is proper for the ter-
rain, visibility and operating conditions, and
your experience. Operating this ATV at speeds
too fast for your skills or the conditions in-
creases your chances of losing control of the
ATV, which can result in an accident. _
U5TG61.book Page 15 Friday, April 2, 2004 11:28 AM

8-3 1. Owner’s manual 2. Owner’s tool kit
3. Low-pressure tire gauge
1. Manuel du propriétaire 2. Trousse à outils
3. Manomètre basse pression pour pneus
1. Manual del propietario 2. Equipo de herramientas
3. Comprobador de la presión de los neumáticos
EBU12220
Owner’s manual and tool kit
You are recommended to put this owner’s manual
and low-pressure tire gauge in the vinyl bag and
always carry them along with the owner’s tool kit
under the seat. The service information included in
this manual is intended to provide you, the owner,
with the necessary information for completing your
own preventive maintenance and minor repairs.
The tools provided in the owner’s tool kit are suffi-
cient for this purpose, except that a torque wrench
is also necessary to properly tighten nuts and
bolts.NOTE:_ If you do not have a torque wrench available dur-
ing a service operation requiring one, take your
machine to a Yamaha dealer to check the torque
settings and adjust them as necessary.
U5TG61.book Page 3 Friday, April 2, 2004 11:28 AM