KS Motorcycles K-LIGHT125, Maintenance Manual

Page: 218 / 278

Check the planeness of cylinder surface.
Allowable limit: 0.05mm.
Measure the inner diameter of small end of connecting
rod.
Allowable limit:13.06 mm.
13.4.2 Installation of Piston
Install the dowel pin;
Apply oil to the piston ring and piston evenly, make the
oblique plane of piston ring up and install it properly.
*Note:
Do not scratch the piston and do not break the piston
ring.
After the piston ring is installed, it can rotate freely in
the piston ring groove.
Clean the washers attached to the crankcase.
*Note:
Foreign matters shall not fall into the crankcase.
Install the piston, piston pin and piston pin retainer.
*Note:
Install the piston into the intake valve according to the
“IN” mark at the top.
Ruler
Test
gauge
Cylinder
Inner diameter of small end of
connecting rod
Top ring
Second ring
Oil ring
“IN” mark
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