Sym RS-50 Service Manual page 53

This chapter Contents
5. CYLINDER HEAD/CYLINDER/PISTON
Use a straight edge and a feeler gauge to
measure the cylinder head for warp.
Service limit: 0.10 mm
In "X" and "Y" direction, measure the cylinder for
worn out as the three levels shown in the figure.
With the max. value to decide cylinder wear out
condition.
Service limit: 39.050mm
Measure the OD of piston at the 7 mm from the
bottom of the piston.
Service limit: 38.935 mm
7mm
Calculate the clearance between piston and
cylinder.
Service limit: 0.100 mm
Measure the ID of piston pin hole.
Service limit: 12.030mm
The ID of piston pin hole
Measure the OD of piston pin.
The OD of piston pin
Service limit: 11.970 mm
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