2005 YAMAHA YFZ450 wheel

8-79 1. Wear indicator groove
1. Rainure d’indicateur d’usure
1. Ranura indicador de desgaste
EBU13981
Front brake pad inspection
Each brake pad is provided with a wear indicator
groove. The indicator grooves allow checking of
brake pad wear without disassembling the brake.
Apply the brake and inspect the wear indicator
grooves. If a brake pad is worn to the point that the
wear indicator groove is almost in contact with the
disc plate, ask a Yamaha dealer to replace the
brake pads as a set.NOTE:_ The wheels need to be removed to inspect the
brake pads. (See page 8-121 for wheel removal
and installation procedures.) _
U5TG61.book Page 79 Friday, April 2, 2004 11:28 AM

8-95
5. Screw in the adjusting bolt at the rear brake
caliper by hand until it feels tight, then screw it
out 1/8 turn. Tighten the locknut to the speci-
fied torque.CAUTION:_ When tightening the locknut, hold the adjust-
ing bolt with a wrench so that the adjusting
bolt does not turn together with the locknut. _
WARNING
_ Operating with improperly adjusted brakes
could cause the brakes to malfunction, result-
ing in reduced braking performance. This
could increase the chance of a collision or ac-
cident. After adjusting the parking brake, block
the rear of the machine off the ground and spin
the rear wheels. Check to make sure there is
no brake drag. If brake drag is noticed, perform
the adjustment again. _
Tightening torque:
Locknut:
16 Nm (1.6 m·kgf)
U5TG61.book Page 95 Friday, April 2, 2004 11:28 AM

8-103 1. Upper wheel hub nut 2. Lower wheel hub nut
1.Écrou supérieur de moyeu de roue
2.Écrou inférieur de moyeu de roue
1. Tuerca superior del cubo de la rueda
2. Tuerca inferior del cubo de la rueda
1. Adjusting bolt (× 2) 2. Locknut (× 2)
3. Alignment marks
1. Boulon de réglage (× 2) 2. Contre-écrou (× 2)
3. Repères d’alignement
1. Perno de ajuste (× 2) 2. Contratuerca (× 2)
3. Marcas de alineación
EBU11940
Drive chain slack adjustment
1. Loosen the rear wheel hub upper and lower
nuts.
2. Loosen the locknuts on each side of the swin-
garm. To tighten the drive chain, turn the ad-
justing bolts in direction
a. To loosen the
drive chain, turn the adjusting bolts in direc-
tion
b and push the wheels forward. Turn
each adjusting bolt exactly the same amount
to maintain correct axle alignment.
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8-105
NOTE:_ There are alignment marks on each side of the
swingarm and on the hub. Use them to check for
proper wheel axle alignment. _3. After adjusting, tighten the locknuts and the
wheel hub nuts to the specified torques.
Tightening torques:
Locknut:
16 Nm (1.6 m·kgf)
Upper wheel hub nut:
85 Nm (8.5 m·kgf)
Lower wheel hub nut:
85 Nm (8.5 m·kgf)
U5TG61.book Page 105 Friday, April 2, 2004 11:28 AM

8-121 1. Nut (× 4)
1.Écrou (× 4)
1. Tuerca (× 4)
Front
Avant
Delantero1. Nut (× 4)
1.Écrou (× 4)
1. Tuerca (× 4)Rear
Arrière
Trasero
EBU11120
Wheel removal
1. Loosen the wheel nuts.
2. Elevate the ATV and place a suitable stand
under the frame.
3. Remove the nuts from the wheel.
4. Remove the wheel.
U5TG61.book Page 121 Friday, April 2, 2004 11:28 AM

8-123 1. Arrow mark
1. Flèche
1. Flecha
Front
Avant
Delantero
EBU14031
Wheel installation
When installing the wheel, reverse the removal
procedure.NOTE:_ The arrow mark on each front tire must point
toward the rotating direction of the wheel. _Tighten the wheel nuts to the specified torque.
Wheel nut torque:
Front: 45 Nm (4.5 m·kgf)
Rear: 45 Nm (4.5 m·kgf)
U5TG61.book Page 123 Friday, April 2, 2004 11:28 AM

9-1
EBU04180
1-CLEANING AND STORAGE
A. CLEANING
Frequent, thorough cleaning of your machine will
not only enhance its appearance but will improve
its general performance and extend the useful life
of many components.
1. Before cleaning the machine:
a. Block off the end of the exhaust pipe to pre-
vent water entry. A plastic bag and strong
rubber band may be used.
b. Make sure the spark plug and all filler caps
are properly installed.
2. If the engine case is excessively greasy, ap-
ply degreaser with a paint brush. Do not ap-
ply degreaser to the chain, sprockets or
wheel axles.
3. Rinse the dirt and degreaser off with a garden
hose. Use only enough pressure to do the
job.
U5TG61.book Page 1 Friday, April 2, 2004 11:28 AM

9-3
CAUTION:_ Excessive water pressure may cause water
seepage and deterioration of wheel bearings,
brakes, transmission seals and electrical de-
vices. Many expensive repair bills have result-
ed from improper high pressure detergent
applications such as those available in coin-
operated car washers. _4. Once the majority of the dirt has been hosed
off, wash all surfaces with warm water and
mild, detergent-type soap. An old toothbrush
or bottle brush is handy for hard-to-get-at
places.
5. Rinse the machine off immediately with clean
water and dry all surfaces with a chamois,
clean towel or soft absorbent cloth.
6. Dry the chain and lubricate it to prevent rust.
7. Clean the seat with a vinyl upholstery cleaner
to keep the cover pliable and glossy.
U5TG61.book Page 3 Friday, April 2, 2004 11:28 AM