1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 184Get this manual
HYDRAULIC DISC BRAKES Push the caliper pistons in all the way, being careful not to damage the pads
CAUTION
Be careful that the master 'cylinder does not overflow when the caliper pistons are compressed Brakeflu id can cause damage to painted, plastic, or rubber surfaces
Install the caliper so that the disc is positioned between the pads, being careful not to damage the pads'86, '87: Install the hosecable clampInstall and tighten the caliper mounting bolt