vitality 50 2t 4t 1 Manuel atelier : Page 97

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          6. 4-STROKE: CYLINDER HEAD/VALVES                                    VITALITY 50

 Inspect the rocker arm bore, cam lobe                                   Rocker Arm Bore
 contact surface and adjuster surface for
 wear/pitting/scratches/blue discoloration.
 If any defects are found, replace the rocker
 arm shaft with a new one, then inspect
 lubrication system.




                                                Contact Surface   Adjuster Surface




 Measure each rocker arm shaft O.D.
 Measure the I.D. of each valve rocker arm.
 Measure arm to shaft clearance.
 Replace as a set if out of specification.
 Service limits: 0.10mm




 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.




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