2005 YAMAHA YFZ450 tires

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

1-5
5For Europe
5For Oceania6For Europe
6For Oceania
5FK-2151H-00
5TG-21696-M0
30 kPa
0.30 kgf/cm
2
4.4 psi
35 kPa
0.35 kgf/cm
2
5.0 psi
GBDEF
INLPS
Set with tires cold.
Pneus à froid. Bei kalten Reifen.
Ajuste con los
neumáticos an frío.Impostare a pneumatici
freddi.
Ställ in med kalla däck. Wanneer de banden
koud zijn.
Regular com pneus
frios.
U5TG61.book Page 5 Friday, April 2, 2004 11:28 AM

1-11
5Pour l’Europe
5Pour l’Océanie6Pour l’Europe
6Pour l’Océanie
5FK-2151H-00
5TG-21696-M0
30 kPa
0.30 kgf/cm
2
4.4 psi
35 kPa
0.35 kgf/cm
2
5.0 psi
GBDEF
INLPS
Set with tires cold.
Pneus à froid. Bei kalten Reifen.
Ajuste con los
neumáticos an frío.Impostare a pneumatici
freddi.
Ställ in med kalla däck. Wanneer de banden
koud zijn.
Regular com pneus
frios.
U5TG61.book Page 11 Friday, April 2, 2004 11:28 AM

1-17
5Para Europa
5Para Oceanía6Para Europa
6Para Oceanía
5FK-2151H-00
5TG-21696-M0
30 kPa
0.30 kgf/cm
2
4.4 psi
35 kPa
0.35 kgf/cm
2
5.0 psi
GBDEF
INLPS
Set with tires cold.
Pneus à froid. Bei kalten Reifen.
Ajuste con los
neumáticos an frío.Impostare a pneumatici
freddi.
Ställ in med kalla däck. Wanneer de banden
koud zijn.
Regular com pneus
frios.
U5TG61.book Page 17 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
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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

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