Yamaha YZ250N Owner's Service Manual page 390

FRONT BRAKE AND REAR BRAKE
EC533402
Piston seal kit
1. Remove:
9Dust seal 1
9Piston seal 2
NOTE:
Remove the piston seals and dust seals by
pushing them with a finger.
cC
Never attempt to pry out piston seals and
dust seals.
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Replace the piston seals and dust seals
whenever a caliper is disassembled.
A Front
B Rear
EC5A4000
INSPECTION
EC534112
Master cylinder
1. Inspect:
9Master cylinder inner surface
Wear/Scratches Replace master cylinder
assembly.
Stains Clean.
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Use only new brake fluid.
A Front
B Rear
2. Inspect:
9Diaphragm 1
Crack/Damage Replace.
A Front
B Rear
3. Inspect:
9Master cylinder piston 1
9Master cylinder cup 2
Wear/Damage/Score marks Replace master
cylinder kit.
A Front
B Rear
5-15
CHAS
a