1987-2003 Yamaha YFZ350 Banshee supplementary service manual, Page 198Get this manual
4Remove: Caliper bracket bolt) Cover Washer (S) Cover (4) Bracket
5Remove:
Dust seal) Piston seal Piston O-ring (4) Use compressed air and proceed carefully
Cover piston with rag and use extreme caution when expelling piston from cylinderNever attempt to pry out piston
Caliper piston removal steps: Insert the rag) into the caliper to lock the pistonBlow compressed air (2) into the hose joint opening to force out the piston from the caliper body