1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 219Get this manual
BRAKES TRX300FW Inspect the wheel cylinder bore and piston for scoring or groovingInspect the piston cup and piston boot for wear or fatigueInspect the adjuster body and adjuster nut for wear or damageCheck the lock spring for fatigue or damage
(3) ADJUSTER BODY
(4) ADJUSTER NUT
CYLINDER BODY
Measure the wheel cylinder LDSERVICE LIMIT: 17.515 mm (0.6896 in) Measure the wheel cylinder piston O.DSERVICE LIMIT: 17.405 mm (0.6852 in)
FRONT BRAKE PANEL INSPECTION
Check the brake panel at the waterproof seal lip contact area for abnormal scratchesCheck the brake panel for wear caused by the waterproof seal lipSERVICE LIMIT: 0.5 mm (0.02 in)