agility city 125 Workshop-manual : Page 82

          7. CYLINDER HEAD/VALVES                                AGILITY CITY 125

 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 : 4.90mm replace if below
 EX: 4.90mm replace if below



 Measure each valve guide I.D.
 Service Limits: IN : 5.03mm replace if over
                 EX: 5.03mm replace if over
 Subtract each valve stem O.D. from the
 corresponding guide I.D. to obtain the stem-
 to-guide clearance.
 Service Limits: IN : 0.08mm replace if over
                 EX: 0.10mm replace if over
 If the stem-to-guide clearance exceeds
    the service limits, replace the cylinder
    head as necessary.



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


 Compress the valve springs using the valve
 spring compressor, then install the valve        Valve Spring Compressor
 cotters.
 · When assembling, a valve spring
      compressor must be used.
    · Install the cotters with the pointed ends
      facing down from the upper side of the
      cylinder head.

  Special
 Valve Spring Compressor




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