1989 Honda FL400R Pilot Service Manual, Page 202Get this manual
BRAKES BRAKE CALIPER REMOVALDISASSEMBLY Drain the brake fluid from the caliper (page 14-3)Remove the brake hose bolt and sealing washersand disconnect the brake hoseRemove the brake caliper (page 14-13)
Position the caliper with the piston down and apply short bursts of air pressure to the fluid inlet
Do not use high pressure air or bring the nozzle too close to the inlet Place shop towel Oller the piston to prevent them from flying out