8. CYLINDER HEAD/VALVES MXU 550EXi /MXU500i CAM CHAIN REMOVAL/INSPECTION/ INSTALLATION REMOVAL Remove the cylinder (refer to the Guide Cam Chain "CYLINDER AND PISTON REMOVAL/INSPECTION/ INSTALLATION" section in the chapter 9). Remove the oil pump drive chain (refer to "OIL PUMP REMOVAL/INSTALLATION" section in the chapter 4). Remove the cam chain from the right crankcase. Remove the two bolts and cam chain guides. Guide INSPECTION Cam chain guide Inspect the cam chain slipper surface of the cam chain guide for wear or damage. Slipper Surface Cam chain Inspect the cam chain for cracks or stiff. 8-28