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.




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