Yamaha YZ450F(S) Owner's Service Manual page 466

Å
Å
FRONT BRAKE AND REAR BRAKE
ı
ı
4. Inspect:
Master cylinder piston 1
G
Master cylinder cup 2
G
Wear/damage/score marks → Replace
master cylinder kit.
Å Front
ı Rear
EC534214
Caliper
1. Inspect:
Caliper cylinder inner surface a
G
Wear/score marks → Replace caliper
assembly.
Å Front
ı Rear
2. Inspect:
Caliper piston 1
G
Wear/score marks → Replace caliper
piston assembly.
WARNING
Replace the piston seals and dust seals 2
whenever a caliper is disassembled.
EC534301
Brake hose
1. Inspect:
Brake hose 1
G
Crack/damage → Replace.
EC5A5000
ASSEMBLY AND INSTALLATION
WARNING
All internal parts should be cleaned in
G
new brake fluid only.
Internal parts should be lubricated with
G
brake fluid when installed.
Replace the piston seals and dust seals
G
whenever a caliper is disassembled.
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CHAS