Hisun HS500ATV-2 Maintenance Manual page 19

Measure the external diameter 10mm above the bottom of the
piston skirt.
Extreme position :the gap between cylinder and piston
repairing limit value: 0.1mm
See figure 2-12.
1、
7． Measure the external diameter of piston pin:
the gap between piston and piston pin:
0.02mm
repairing limit value: 0.02mm .See figure 2-13.
Figure 2-11
Figure 2-12
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