Yamaha YFM250XN 2001 Supplementary Service Manual page 35

FRONT BRAKE
1.Inspect:
Caliper piston 1
Scratches/rust/wear
assembly.
Caliper cylinder 2
Wear/scratches → Replace caliper assem-
bly.
Caliper body 3
Cracks/damage → Replace.
Oil delivery passage (caliper body)
Blow out with compressed air.
WARNING
Replace the piston seal whenever the cali-
per is disassembled.
2.Inspect:
Brake master cylinder
Wear/scratches → Replace the brake master
cylinder assembly.
Brake master cylinder body
Cracks/damage → Replace.
Oil delivery passage (master cylinder body)
Blow out with compressed air.
3.Inspect:
Brake master cylinder kit
Scratches/wear/damage → Replace as a
set.
4.Inspect:
Brake master cylinder reservoir diaphragm
Wear/damage → Replace.
5.Inspect:
Brake hose
Cracks/wear/damage → Replace.
– 28 –
CHAS
→
Replace caliper