CHASSIS 8-79 MASTER CYLINDER REMOVAL • Drain the brake fluid. (8-64) • Remove the brake fluid reservoir mounting bolt 1. • Place a rag underneath the union bolt on the master cylinder to catch spilled drops of brake fluid. Remove the union bolt 2 and disconnect the brake hose. • Loosen the lock-nut 3. • Remove the mounting bolts 4.  Immediately and completely wipe off any brake fluid contacting any parts of the motorcycle. The fluid reacts chemically with paint, plastic and rubber mate- rials, etc. and will damage them severely. E • Disconnect the reservoir hose. L • Remove the master cylinder by turning the master cylinder rod 5. P M A S MASTER CYLINDER DISASSEMBLY • Remove the reservoir cap 1 and diaphragm 2. • Remove the connector 3 by removing the screw. • Remove the O-ring 4.  Replace the O-ring with a new one.