Yamaha YZ250(S)/LC Owner's Service Manual page 396

FRONT BRAKE AND REAR BRAKE
4. Inspect:
9 Master cylinder piston 1
9 Master cylinder cup 2
Wear/Damage/Score marks¡Replace master
cylinder kit.
A Front
B Rear
EC534214
Caliper
1. Inspect:
9 Caliper cylinder inner surface a
Wear/Score marks¡Replace caliper as-
sembly.
A Front
B Rear
2. Inspect:
9 Caliper piston 1
Wear/Score marks¡Replace caliper piston
assembly.
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Replace the piston seals and dust seals 2 2
whenever a caliper is disassembled.
EC534301
Brake hose
1. Inspect:
9 Brake hose 1
Crack/Damage¡Replace.
EC5A5000
ASSEMBLY AND INSTALLATION
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9 All internal parts should be cleaned in
new brake fluid only.
9 Internal parts should be lubricated with
brake fluid when installed.
9 Replace the piston seals and dust seals
whenever a caliper is disassembled.
5-16
CHAS