KYMCO Dink 50, Service Manual

Page: 153 / 424

7
. CYLINDER/PISTON
7-8
DINK50/ 125
Cylinder
Check the cylinder for warpage with a
straight edge and feeler gauge in the
directions shown.
Service Limit: 0.05 mm (0.002 in)
Check the cylinder wall for wear or damage.
Measure and record the cylinder I.D. at three
levels in an X and Y axis. Take the maximum
reading to determine the cylinder wear.
Service Limit: 52.5 mm (2.1 in)
Calculate the piston-to-cylinder clearance.
Take a maximum reading to determine the
clearance.
Service Limit: 0.1 mm (0.004 in)
Calculate the taper and out-of-round at three
levels in an X and Y axis. Take the maximum
reading to determine them.
Service Limit:
Taper: 0.1 mm (0.004 in)
Out-of-round: 0. 1 mm (0.004 in)
Measure the connecting rod small end I.D.
Service Limit: 15.06 mm (0.6024 in)
Calculate the connecting rod-to-piston pin
clearance.
Service Limit: 0.02 mm (0.0008 in)
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MIDDLE
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