1983-1985 Original Honda ATC 200X Shop Manual, Page 190Get this manual
BRAKE MECHANISM INSTALLATION Install the rear master cylinder and tighten the mount boltsTORQUE: 20-30 Nm (2.0-3.0 kg-m14-22 ft-Ib)
COTTER PIN Connect the rear brake arm and master cylinder push rod end with the joint pinSecure the joint pin with the washer and new cotter pin