1987-2003 Yamaha YFZ350 Banshee supplementary service manual, Page 52Get this manual
Caliper Disassembly 1Remove: Dust seal Piston seal Piston Use compressed air and proceed carefully Cover piston with rag and use extreme caution when expelling piston from cylinderNever attempt pry out piston
Caliper piston removal steps: Inserthe rag into the caliper lock the pistonBlo compressed air into the hose joint opening force out the piston from the caliper body
Inspection 1Inspect: Piston RusWear ReplaceCaliper cylinder body WearIScratches Replace