Hisun HS700UTV-4 Maintenance Handbook page 166

ENGINE
• ring end gap
Out of specification
Repairing limit value
Top ring/2nd ring:0.5mm
• ring side clearance
Use a thickness gauge.
Out of specification
rings as a set.
1NOTE:
Clean carbon from the piston ring grooves
and rings
clearance.
Top ring
2nd ring
• piston pin-to-piston clearance.
a. Measure the piston pin outside diameter.
Repairing limit value
0.02mm
b. Measure the piston pin bore inside diameter.
Repairing limit value
0.02mm
c. Calculate the piston pin-to-piston clearance
with the following formula.
Piston pin-to-piston clearance = Piston pin
bore inside diameter – Piston pin outside
diameter
d. If out of specification, replace the piston.
- 153 -
Replace.
Replace the piston and
before measuring
Side clearance
Standard
0.04~0.08mm 0.13mm
0.03~0.07mm 0.13mm
the side
Limit