vitality 50 2t 4t Workshop-manual : Page 163

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          11. CRANKCASE/CRANKSHAFT                                 VITALITY 50


 Measure the crankshaft runout.

                Service Limit
          A                       B
      0.150mm                 0.100mm
    replace if over         replace if over




 Check the crankshaft bearings for excessive
 play. The bearings must be replaced if they   Play               Play
 are noisy or have excessive play.




                                                 Axial   Radial




 CRANKSHAFT INSTALLATION
 Wash the crankshaft in cleaning solvent and
 then check for cracks or other faults.
 · After check, apply clean engine oil to
     all moving and sliding parts.
   · Remove all gasket material from the
     crankcase mating surfaces. Dress any
     roughness or irregularities with an oil
     stone.




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