15. REAR WHEEL/AXLE/SUSPENSION DRIVING MECHANISM MXU 250R/300R Remove the driven sprocket clip at the rear axle and then remove the driven sprocket. Clip Remove the four nuts attaching the driven sprocket holder at the driven sprocket and then remove driven sprocket. Nuts Inspect the drive sprocket and driven sprocket. More than 1/4 teeth wear Replace. Bent teeth Replace. 15-9