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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.
7-7