Yamaha WR250F Manuel D'atelier page 498

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FRONT BRAKE AND REAR BRAKE
5 - 16
Brake caliper piston seal kit
1. Remove:
Dust seal 1
Piston seal 2
NOTE:
Remove the piston seals and dust seals by
pushing them with a finger.
CAUTION:
Never attempt to pry out piston seals and
dust seals.
WARNING
Replace the piston seals and dust seals
whenever a caliper is disassembled.
Å Front
ı Rear
EC5A4000
INSPECTION
Brake master cylinder
1. Inspect:
Brake master cylinder inner surface a
Wear/scratches → Replace master cyl-
inder assembly.
Stains → Clean.
WARNING
Use only new brake fluid.
Å Front
ı Rear
2. Inspect:
Diaphragm 1
Crack/damage → Replace.
Å Front
ı Rear
3. Inspect:
Brake master cylinder piston 1
Brake master cylinder cup 2
Wear/damage/score marks → Replace
brake master cylinder kit.
Å Front
ı Rear
CHAS