Makita EH561 Service Manual page 18

9.
Piston
When equipping the piston in the crankshaft
ass'y, the triangular mark (
A
) on the top of the
position should be on the crankshaft key slot side.
10. Piston ring
When installing the piston ring on the position, align the knock pin on the piston with the split on the piston ring.
Unless they are lined up the cylinder cannot be assembled.
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