1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 222Get this manual
BRAKES ASSEMBLY (TRX300)
(4) BRAKE PANEL (2) CAP (5) WHEEL CYLINDER BODY
30 Nm (3.0 kg-m22 ft-Ib)
(SILICONE) (12) ADJUSTER NUT
(11) ADJUSTER BODY (10) BRAKE SHOE
CAUTION
Clean all parts, excluding the boots, throughly with BRAKE FLUID only Blowout passages with compressed airInstall the pistons into the wheel cylinder body without allowing the lips to turn inside outInstall the boots on the clyinder body