KYMCO KXR 250, Service Manual

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8
. CYLINDER/PISTON
8-8
Mongoose/KXR 250
PISTON INSTALLATION
Remove any gasket material from the
crankcase surface.
Install the piston, piston pin and a new
piston pin clip.
CYLINDER INSTALLATION
Install the dowel pins and a new cylinder
gasket on the crankcase.
Coat the cylinder bore, piston and piston
rings with clean engine oil.
Carefully lower the cylinder over the piston
by compressing the piston rings.
•
Apply proper clean engine oil around
cylinder wall.
•
Be careful not to damage or break the
piston rings.
•
Stagger the ring end gaps at 120
°
to the
piston pin.
＊
Be careful not to drop foreign matters
into the crankcase.
＊
•
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.
＊
IN
“IN” Mark