2006 Honda TRX680 Rincon Factory Service Manual, Page 97Get this manual
MAINTENANCE REAR BRAKE Place the vehicle on level surfaceRemove the right fuel tank side cover (page 3-6)Check the fluid level in the rear brake reservoirIf the level is near the "LOWER" level line, remove the reservoir mounting bolt, reservoir cap, set plate and diaphragm and fill the reservoir with Honda DOT brake fluid from sealed container to the "UPPER" level lineInstall the diaphragm, set plate, reservoir cap and mounting bolt, and tighten the boltInstall the right fuel tank side cover (page 3-6)
BRAKE PADS WEAR
NOTE: The front and rear brake has audible brake wear indicatorWhen the brake pads need replacing, the brake will screech while applying the brake