1. Kymco
  2. Werkstatthandbuch
  3. grand dink 125 mmc Werkstatthandbuch
  4. Seite 74

grand dink 125 mmc Werkstatthandbuch : Seite 74

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          6. CYLINDER HEAD/VALVES                                            GRAND DINK 125/150


                                                   Straight Edge
 INSPECTION
 CYLINDER HEAD
 Check the spark plug hole and valve areas for
 cracks.
 Check the cylinder head for warpage with a
 straight edge and feeler gauge.
 Service Limit: 0.05mm repair or replace if
                 over


                                                                   Feeler Gauge

 VALVE SPRING FREE LENGTH
 Measure the free length of the inner and outer
 valve springs.
 Service Limits:
  Inner (IN, EX) : 29.3mm replace if below
  Outer (IN, EX): 32.0mm replace if below




 VALVE /VALVE GUIDE
 Inspect each valve for bending, burning,
 scratches or abnormal stem wear.
 Check valve movement in the guide.
 Measure each valve stem O.D.
 Service Limits: IN: 4.925mm replace if
                 below
                 EX: 4.915mm replace if
                 below




 CYLINDER HEAD ASSEMBLY
 Install the valve spring seats and stem seals.
 Lubricate each valve stem with engine oil and
 insert the valves into the valve guides.
 Be sure to install new valve stem seals.




                                                  Valve Spring Compressor

                                                                                  6-8
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