2008-2010 Kawasaki KFX450R Factory Service Manual, Page 329Get this manual
BRAKES 12-17 Calipers
Front Caliper Disassembly
Remove:(see Front Caliper Removal) Caliper
Pads (see Front Brake Pad Removal) Anti-rattle Spring Using compressed air, remove the pistonCover the caliper opening with clean, heavy clothRemove the piston by lightly applying compressed air [A] to where the brake line fits into the caliper
WARNING
To avoid serious injury, never place your fingers or palm inside the caliper openingIf you apply compressed air into the caliper, the piston may crush your hand or fingers