2003 Yamaha YFM400FAR Kodiak Factory Service Manual, Page 273Get this manual
FRONT BRAKE
DISASSEMBLING THE FRONT BRAKE CALIPERS 1.Remove: Brake caliper piston Dust seal Caliper piston seal Removal steps: Blow compressed air into the hose joint opening to force out the caliper piston from the brake caliper body
WARNING
Never try to pry out the caliper pistonCover the caliper piston with ragBe careful not to get injured when the piston is expelled from the master cylinderthe caliper piston seals