2006 YAMAHA YFZ450 tire pressure

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 ....................................... 4-17Brake pedal ...................................... 4-17
Parking brake lever .......................... 4-19
Shift pedal ........................................ 4-21
Fuel tank cap .................................... 4-21
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 ......................... 5-7
Fuel .................................................. 5-13
Engine oil .......................................... 5-17
Coolant ............................................. 5-19
Chain ................................................ 5-21
Throttle lever .................................... 5-21
Tires ................................................. 5-23
How to measure tire pressure .......... 5-27
Tire wear limit ................................... 5-29
Fittings and fasteners ....................... 5-29
EBU00150
CONTENTS
1
2
3
4
5
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2-13
8Always 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 slid-
ing out of control.
8Never 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.
8Always use the size and type of tires specified
in this manual.
8Always maintain proper tire pressure as
described in this manual.
5TG-9-62 1-3 5/13/05 10:06 AM Page 2-13

5-1
EBU01130
PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Front brake9Check operation lever, free play, fluid level and fluid leakage. 5-7–5-11, 8-81,
9Fill with DOT 4 brake fluid if necessary. 8-85–8-91
Rear brake9Check operation, fluid level and fluid leakage. 5-7–5-11
9Fill with DOT 4 brake fluid if necessary. 8-83–8-89, 8-93
Clutch9Check operation, condition and lever free play. 8-103
Parking brake9Check operation, condition and cable length. 8-97–8-99
Fuel 9Check fuel level.
9Fill with fuel if necessary.5-13–5-15
Engine oil9Check oil level.
9Fill with oil if necessary.5-17, 8-25–8-41
Coolant reservoir 9Check coolant level in reservoir.
9Fill with coolant if necessary.5-19–5-21, 8-43–8-53
Drive chain9Check chain slack and condition.
9Adjust if necessary.5-21, 8-105–8-113
Throttle9Check for proper throttle cable operation and free play. 5-21, 8-79
Wheels and tires9Check tire pressure, wear and damage. 5-23–5-29, 8-125–8-127
Fittings and fasteners9Check all fittings and fasteners. 5-29
Lights and switches9Check for proper operation. 5-29, 8-99, 8-137–8-141
5TG-9-62 5-6 5/13/05 1:45 PM Page 5-1

5-23
EBU01580
Tires
Always use the recommended tires.
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Use of improper tires on this ATV, or opera-
tion of this ATV with improper or uneven tire
pressure, may cause loss of control, increas-
ing 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 ×7–10KT341
Radial
Rear DUNLOP AT20 ×10–9KT355A
Radial
5TG-9-62 5-6 5/13/05 1:45 PM Page 5-23

5-25
2. The tires should be set to the recommend-
ed pressure:
8Recommended tire pressure
Front 30 kPa (0.30 kgf/cm
2, 0.30 bar)
Rear 35 kPa (0.35 kgf/cm2, 0.35 bar)
8Check and adjust tire pressures when the
tires are cold.
8Tire 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/cm
2, 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.
5TG-9-62 5-6 5/13/05 1:45 PM Page 5-25

5-27
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:
1. Low-pressure tire gauge1. Manomètre basse pression pour pneus1. Manómetro de baja presión
Recommended
pressure
30 kPa
(0.30 kg/cm
2,
0.30 bar)
35 kPa
(0.35 kg/cm
2,
0.35 bar)Minimum
27 kPa
(0.27 kg/cm
2,
0.27 bar)
32 kPa
(0.32 kg/cm
2,
0.32 bar)Maximum
33 kPa
(0.33 kg/cm
2,
0.33 bar)
38 kPa
(0.38 kg/cm
2,
0.38 bar) Front
Rear
5TG-9-62 5-6 5/13/05 1:45 PM Page 5-27

7-15
w
Always use the size and type tires specified
in the Owner’s Manual for this vehicle on
pages 5-23–5-25. Always maintain proper tire
pressure as described in the Owner’s Manual
on page 5-27. Use of improper tires on this
ATV, or operation of this ATV with improper
or uneven 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.
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Always go at a speed that is proper for the
terrain, visibility and operating conditions,
and your experience. Operating this ATV at
speeds too fast for your skills or the condi-
tions increases your chances of losing con-
trol of the ATV, which can result in an acci-
dent.
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8-3
EBU12220
Owner’s manual and tool kit
You are recommended to put this owner’s man-
ual 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 sufficient 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
during a service operation requiring one, take
your machine to a Yamaha dealer to check the
torque settings and adjust them as necessary.
1. Owner’s manual
2. Owner’s tool kit
3. Low-pressure tire gauge
1. Manuel du propriétaire
2. Trousse à outils du propriétaire
3. Manomètre basse pression pour pneus
1. Manual del propietario
2. Juego de herramientas del propietario
3. Manómetro de baja presión
5TG-9-62 8 5/13/05 1:48 PM Page 8-3