1985-1986 Honda ATC250R Shop Manual, Page 205Get this manual
HYDRAULIC DISC BRAKES
REMOVALINSTALLATION FRONT BRAKE DISC
Remove the front wheel (Page 10-6)Remove the front brake disc from the front wheel hubInstall the front brake disc and tighten the mount nuts
TORQUE: 25-30 Nm (2.5-3.0 kg-m, 18-22 ft-Ib)
Install the front wheel (Page 10-13)
REAR BRAKE DISC
Remove the rear axle (Page 11-3)Remove the rear brake disc from the disc hUbI nstall the rear brake disc and tighten the mounting bolts
TORQUE: 35-40 Nm (3.5-4.0 kg-m, 25-29 ft-Ib) Install the rear axle (Page 11-7)