HYDRAULIC BRAKE V45 Remove the piston boot and the circlip from the master cylinder body. SNAP RING PLIERS 07914-3230001 Remove the secondary cup and piston. Then remove the primary cup and spring. Remove the brake light switch from the master cylinder body, if necessary. Clean the inside of the master cylinder and reservoir with brake fluid. INSPECTION Measure the master cylinder I.D. Check the master cylinder for scores, scratches or nicks. SERVICE LIMIT: 15.93 mm (0.627 in) 278 16-8 Date of Issue: January, 1982 (C) HONDA MOTOR CO., LTD.