2005 YAMAHA WR 450F brake pads

3 - 2
INSP
ADJ
MAINTENANCE INTERVALS
ROTOR NUT
Retighten
MUFFLER
Inspect and retighten
Clean
Replace * Whichever comes first
*SPARK ARRESTER
(Every six
months)
Clean
CRANK
Inspect and clean
CARBURETOR
Inspect, adjust and clean
AIR INDUCTION SYSTEM
Inspect and clean
SPARK PLUG
Inspect and clean
Replace
DRIVE CHAIN
Use chain lube
Chain slack: 48 ~ 58 mm
(1.9 ~ 2.3 in) Lubricate, slack, alignment
Replace
COOLING SYSTEM
Check coolant level and leakage
Check radiator cap operation
Replace coolant Every two years
Inspect hoses
OUTSIDE NUTS AND BOLTS Refer to “STARTING
AND BREAK-IN” section
in the CHAPTER 1. Retighten
AIR FILTER
Use foam air-filter oil or
equivalent oil Clean and lubricate
Replace
OIL FILTER
Replace
OIL STRAINER (frame)
Clean
FRAME
Clean and inspect
FUEL TANK, COCK
Clean and inspect
BRAKES
Adjust lever position and pedal height
Lubricate pivot point
Check brake disc surface
Check fluid level and leakage
Retighten brake disc bolts, caliper
bolts, master cylinder bolts and union
bolts
Replace pads
Replace brake fluid Every one yearItemAfter
break-inEvery
race
Every
third
(or
500 km)Every
fifth
(or
1,000 km)As re-
quiredRemarks


3

3 - 28
INSP
ADJ
FRONT BRAKE PAD INSPECTION AND REPLACEMENT
Loosen the pad pin 2.
Remove the caliper 3 from the front fork.
Remove the pad pin and brake pads 4.
Connect the transparent hose 5 to the
bleed screw 6 and place the suitable con-
tainer under its end.
Loosen the bleed screw and push the cali-
per piston in.
CAUTION:
Do not reuse the drained brake fluid.
Tighten the bleed screw.
T R..
Bleed screw:
6 Nm (0.6 m  kg, 4.3 ft  lb)
Install the brake pads 7 and pad pin.
NOTE:
Install the brake pads with their projections
a into the caliper recesses b.
Temporarily tighten the pad pin at this
point.
Install the caliper 8 and tighten the pad
pin 9.
T R..
Bolt (caliper):
23 Nm (2.3 m  kg, 17 ft  lb)
Pad pin:
18 Nm (1.8 m  kg, 13 ft  lb)

3 - 30
INSP
ADJ
REAR BRAKE PAD INSPECTION AND REPLACEMENT
Remove the pad pin 6 and brake pads 7.
Connect the transparent hose 8 to the
bleed screw 9 and place the suitable con-
tainer under its end.
Loosen the bleed screw and push the cali-
per piston in.
CAUTION:
Do not reuse the drained brake fluid.
Tighten the bleed screw.
T R..
Bleed screw:
6 Nm (0.6 m  kg, 4.3 ft  lb)
Install the brake pad 0 and pad pin A.
NOTE:
Install the brake pads with their projections
a into the caliper recesses b.
Temporarily tighten the pad pin at this
point.
Install the caliper B and rear wheel C.
Refer to “FRONT WHEEL AND REAR
WHEEL” section in the CHAPTER 5.
Tighten the pad pin D.
T R..
Pad pin:
18 Nm (1.8 m  kg, 13 ft  lb)
Install the pad pin plug E and protector
F.
T R..
Pad pin plug:
3 Nm (0.3 m  kg, 2.2 ft  lb)
Bolt (protector):
7 Nm (0.7 m  kg, 5.1 ft  lb)

5 - 6
CHASFRONT WHEEL AND REAR WHEEL
5. Install:
Wheel
NOTE:
Install the brake disc 1 between the brake
pads 2 correctly.
Make sure that the projections a in the trip
meter gear unit fits over the stopper b on
the front fork outer tube.
6. Install:
Wheel axle 1
NOTE:
Apply the lithium soap base grease on the
wheel axle.
7. Install:
Nut (wheel axle) 1
T R..105 Nm (10.5 m · kg, 75 ft · lb)

5 - 8
CHAS
2. Install:
•Brake disc 1
 Bolt (brake disc) 2
NOTE:
Tighten the bolts in stage, using a crisscross
pattern.
T R..14 Nm (1.4 m · kg, 10 ft · lb)
3. Install:
 Driven sprocket 1
 Bolt (driven sprocket) 2
 Plain washer (driven sprocket) 3
 Nut (driven sprocket) 4
NOTE:
Tighten the nuts in stage, using a crisscross
pattern.
T R..50 Nm (5.0 m · kg, 36 ft · lb)
4. Install:
Collar 1
NOTE:
Apply the lithium soap base grease on the oil
seal lip.
5. Install:
 Wheel
NOTE:
Install the brake disc 1 between the brake
pads 2 correctly.
6. Install:
 Drive chain 1
NOTE:
Push the wheel 2 forward and install the drive
chain.
FRONT WHEEL AND REAR WHEEL

5 - 17
CHAS
EC5A5800
Caliper piston
1. Clean:
Caliper
Piston seal
Dust seal
Caliper piston
Clean them with brake fluid.
2. Install:
Piston seal 1
Dust seal 2
WARNING
Always use new piston seals and dust
seals.
NOTE:
Fit the piston seals and dust seals onto the slot
on caliper correctly.
ÈFront
ÉRear
3. Install:
Caliper piston 1
NOTE:
Apply the brake fluid on the piston wall.
CAUTION:
Install the piston with its shallow
depressed side
a facing the caliper.
Never force to insert.
ÈFront
ÉRear
Front caliper
1. Install:
Pad support 1
Brake pad 2
Pad pin 3
NOTE:
Install the brake pads with their projections
a into the caliper recesses
b.
Temporarily tighten the pad pin at this point.
È
New
New
É
È
É
FRONT BRAKE AND REAR BRAKE

5 - 18
CHASFRONT BRAKE AND REAR BRAKE
2. Install:
Caliper 1
Bolt (caliper) 2
3. Tighten:
Pad pin 3
4. Install:
Pad pin plug 4
T R..23 Nm (2.3 m · kg, 17 ft · lb)
T R..18 Nm (1.8 m · kg, 13 ft · lb)
T R..3 Nm (0.3 m · kg, 2.2 ft · lb)
EC5A5100
Rear caliper
1. Install:
Pad support 1
Brake pad 2
Pad pin 3
NOTE:
Install the brake pads with their projections
a into the caliper recesses b.
Temporarily tighten the pad pin at this point.
2. Install:
Disc cover 1
Bolt (disc cover) 2
T R..7 Nm (0.7 m · kg, 5.1 ft · lb)