15. REAR WHEEL/AXLE/SUSPENSION DRIVING MECHANISM MXU 300/250 Remove the rear brake disk. Rear Brake Disk Inspect the brake disk Cracks/damage Replace. Inspect the brake disk splines. Wear/damage Replace. Splines Drive Sprocket Cover Bolts Loosen the driven chain (refer to the "DRIVE CHAIN SLACK ADJUSTMENT" section in the chapter 3) and remove the two bolts at the drive sprocket (refer to the chapter 6), then disconnect the drive chain from the driven sprocket. Bolts Drive Sprocket 15-7