1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 199Get this manual
BRAKES INSPECTION
Measure the master cylinder 1.0SERVICE LIMIT: 12.75 mm (0.502 inl Check the master cylinder fo scores, scratches or nicksMeasure the master cylinder piston 0.0SERVICE LIMIT12.64 mm (0.498 in) Check the primary and secondary cups for damage before assembly
ASSEMBLY
CAUTION
Keep the master cylinder piston, cups, snap ring, cylinder and spring as set; don '( substitute individual partsAssemble the master cylinderCoat all parts with clean brake flu id before assemblyInstall the spring and primary cup togetherDip the secondary cup in brake fluid before assemblyInstall the piston, snap ring and bootCAUTION
(2) SECONDARY CUP (1) PISTON
(3) DIAPHRAGM
When installing (he cups, do not aIo the ips to turn inside ourand be certain the snap ring is firmly sealed ill the groovePlace the master cylinder on the hand lebar