vitality 50 2t 4t 1 Manuel atelier : Page 102

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


 VALVE SPRING INSPECTION
 Measure the free length of the inner and
 outer valve springs.
 Service Limit:
        Inner: 28.4mm replace if below
        Outer: 31.5mm replace if below




 Measure compressed force (valve spring)
 and installed length.
 Replace if out of specification.
 Service limits:
 IN : 56kg(at 20.45mm)
 EX : 9.511.5kg(at 23.5mm)




 Check the intake manifold and O-rings for
 wear or damage.




                                                  O-ring




                                                    6-12