1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 276Get this manual
FRONT BRAKE CALIPER DISASSEMBLY 1.Remove: Brake caliper piston Dust seal D Caliper piston seal
ICHASI"I
Removal steps: Blow compressed air into the hose joint opening to force out the caliper piston from the brake caliper body
A WARNING
Never try to pry out the caliper piston Cover the caliper piston with ragBe careful not to get injured when the piston is expelled from the master cylinder Remove the caliper piston seals