KYMCO BET & WIN 50 Manual page 79

6
. CYLINDER HEAD/CYLINDER/PISTON
BET & WIN 50
Install the frame covers.
PISTON/CYLINDER INSTALLATION
First install the expander in the second ring
Piston
groove.
Top Ring (1st Ring)
Then install the top and second rings in
their respective ring grooves.
The piston rings should be pressed into the
grooves with even force.
After installation, check and make sure that
each ring is flush with the piston at several
points around the ring.
A ring that will not compress means that
the ring groove has carbon deposits in it and
Second Ring
should be cleaned.
Expander
Install a new cylinder gasket on the mating
surface between the cylinder and crankcase.
Cylinder Gasket
Make sure that the ring end gaps are aligned
with the piston ring pins in the ring
grooves.
Lubricate the cylinder inside and piston
Ring Pins
rings with engine oil and install the piston
into the cylinder while compressing the
piston rings.
°Ø
Be careful not to damage the piston.
Install the cylinder head.
Torque: 14.7_ 16.66N-m
Install the exhaust muffler and tighten the
exhaust muffler joint lock nuts.
Torque: 9.8_ 13.72N-m
Tighten the exhaust muffler lock bolts.
Torque: 29.4_ 35.28N-m
6-8
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