Service manual

【6-19】

NGIN

PISTON INSTALLATION

● Remove any gasket material from the crankcase surface.

NOTE:

Be careful not to drop foreign matters into the crankcase.

● Install the piston, piston pin and a new piston pin clip.

NOTE:

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.

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.

NOTE:

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.