DAELIM ET-250 Service Manual page 64

Measure the outer diameter of piston pin.
Service Limit: 17.00 mm
Measure the inner diameter of connecting rod small
end.
Service Limit: 17.02 mm
Measure the inner diameter of piston pin hole.
Service Limit: 17.02 mm
Calculate clearance between piston pin and its hole.
Service Limit: 0.02 mm
Measure piston outer diameter.
Caution
The measurement position is 10 mm distance
from piston bottom side, and 90° to piston pin.
Service limit? 71.00 mm
Compare measured value with service limit to
calculate the clearance between piston and cylinder.