Yamaha WR450F(S) Owner's Service Manual page 534

Å
ı
Å
Å
ı
FRONT BRAKE AND REAR BRAKE
ı
EC5A3000
REMOVAL POINTS
Brake fluid
1. Remove:
[Front]
Master cylinder cap 1
G
[Rear]
Master cylinder cap 1
G
Protector
G
NOTE:
Do not remove the diaphragm.
Å Front
ı Rear
2. Connect the transparent hose 2 to the
bleed screw 1 and place a suitable con-
tainer under its end.
Å Front
ı Rear
3. Loosen the bleed screw and drain the
brake fluid while pulling the lever in or
pushing down on the pedal.
CAUTION:
Do not reuse the drained brake fluid.
G
Brake fluid may erode painted surfaces or
G
plastic parts. Always clean up spilled
fluid immediately.
EC533301
Caliper piston
1. Remove:
Caliper piston
G
Use compressed air and proceed care-
fully.
WARNING
Cover piston with rag and use extreme
G
caution when expelling piston from cylin-
der.
Never attempt to pry out piston.
G
Caliper piston removal steps:
Insert a piece of rag into the caliper to lock
G
one caliper.
Carefully force the piston out of the caliper
G
cylinder with compressed air.
Å Front
ı Rear
5 - 15
CHAS