Honda GX120K1 Manual page 114

CRANKSHAFT COVER/ CRANKSHAFT/PISTON
INSPECTION
CYLINDER I.D.
Measure and record the cylinder I.D. at three levels in both the "X"
axis (perpendicular to crankshaft) and the "Y" axis (parallel to
crankshaft). Take the maximum reading to determine cylinder
wear and taper.
Standard
GX120K1 60.0 mm (2.36 in)
GX160K1
68.0 mm (2.68 in)
GX200
10-6
gx120k1_gx160k1_gx200
Service limit
60.165 mm (2.3687 in)
68.165 mm (2.6837 in)
GX120K1•GX160K1•GX200