kxr maxxer 250 300 Workshop-manual : Page 95

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          7. CYLINDER HEAD/VALVES                             ATV 300/250


 CAMSHAFT HOLDER ASSEMBLY
 Reverse the "CAMSHAFT HOLDER
 DISASSEMBLY" procedures.
 Align the cross cutout on the exhaust
   valve rocker arm shaft with the bolt of
   the camshaft holder.




                                               Camshaft Bearings
 CAMSHAFT INSPECTION
 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.




 Inspect camshaft lobes for
 pitting/scratches/blue discoloration.

 Measure the cam lobe height.
 Service Limits:
    IN : 34.15 mm (1.366 in)
    EX: 34.05 mm (1.362 in)

 If any defects are found, replace the
 camshaft with a new one, then inspect
 lubrication system.



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