zing 125 qe Workshop-manual : Page 68

          7. CYLINDER/PISTON                                                           ZING II 125


 PISTON INSTALLATION
 Remove any gasket material from the
 crankcase surface.

 Be careful not to drop foreign matters
    into the crankcase.




                                                              Piston
 Install the piston, piston pin and a new piston
 pin clip.
 · Position      the piston "IN" mark on the
      intake valve side.
    · Place a clean shop towel in the
      crankcase to keep the piston pin clip
      from falling into the crankcase.



                                                       Piston Pin Piston Pin Clip


 CYLINDER INSTALLATION
 Install the dowel pins and a new cylinder
 gasket on the crankcase.




                                                                 Dowel Pin
                                                   Cylinder
 Coat the cylinder bore, piston and piston
 rings with clean engine oil.
 Carefully lower the cylinder over the piston by
 compressing the piston rings.
 · Be careful not to damage or break the
     piston rings.
   · The piston ring end gaps should not be
     parallel with or at 90° to the piston pin.




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