mxer mxu 150 Workshop-manual : Page 109

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          7. CYLINDER HEAD/VALVES                                                ATV 150/125

                                                             Camshaft Bearings
 Check each camshaft bearing for play or
 damage. Replace the camshaft assembly
 with a new one if the bearings are noisy or
 have excessive play.




 CAMSHAFT HOLDER DISASSEMBLY                    Rocker Arm          Bolt
 Remove the bolt attaching the stop plate.
 Take out the valve rocker arm shafts using a
 5mm bolt.
 Remove the valve rocker arms.




                                                       Rocker Arm Shaft
                                                Camshaft Holder
 CAMSHAFT HOLDER INSPECTION
 Inspect the camshaft holder, valve rocker
 arms and rocker arm shafts for wear or
 damage.
 If the valve rocker arm contact surface is
    worn, check each cam lobe for wear or
    damage.



                                                        Rocker Arm Shafts


 Measure the I.D. of each valve rocker arm.
 Measure each rocker arm shaft O.D.
 Measure arm to shaft clearance.
 Replace as a set if out of specification.
 Service limits: 0.1 mm (0.004 in)




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