1981-1984 Official Honda ATC250R Shop Manual, Page 213Get this manual
HONDA ATe 250R
'82 ATC250R ADDENDUM
BRAKE DISC
Install the brake disc and tighten the bolts to the specified torque
TORQUE: 21-27 N'm (2.1-2.7 kg-m, 15-20 ft-Ib)
BRAKE CALIPER
Install the brake caliper on the swingarm and tighten the bolts to the specified torque