Yamaha YZ450F, Owner'S Service Manual

Page: 466 / 650

5 - 14
CHAS
FRONT BRAKE AND REAR BRAKE
EC5A3000
REMOVAL POINTS
Brake fluid
1. Remove:
[Front]
• Master cylinder cap
1
[Rear]
• Master cylinder cap
1
• Protector
NOTE:
Do not remove the diaphragm.
È
Front
É
Rear
2. Connect the transparent hose
2
to the
bleed screw
1
and place a suitable con-
tainer under its end.
È
Front
É
Rear
È
É
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.
• Brake fluid may erode painted surfaces or
plastic parts. Always clean up spilled
fluid immediately.
EC533301
Caliper piston
1. Remove:
• Caliper piston
Use compressed air and proceed care-
fully.
WARNING
• Cover piston with rag and use extreme
caution when expelling piston from cylin-
der.
• Never attempt to pry out piston.
È
Front
É
Rear
Caliper piston removal steps:
• Insert a piece of rag into the caliper to lock
one caliper.
• Carefully force the piston out of the caliper
cylinder with compressed air.
È É
È
É