1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 29Get this manual
MAINTENANCE
BRAKE SHOES
FRONT BRAKE
Remove the brake shoe lining inspection hole cap and inspect the lining thicknessLining thickness: STANDARD.0 mm (0.16 inl SERVICE LIMIT2.0 mm (0 .08 inl
If either lining is worn beyond he limit, both brake shoes must be replaced
REAR BRAKE