Cylinder / piston assy
Overhauling the gudgeon pins
They must be perfectly smooth, without signs of scoring, steps or blueish stains due to overheating. The well-
lubricated gudgeon pin must slide smoothly inside the piston.
Assembly clearance must be:
0.002-0.008
mm
Max allowed wear limit:
0.035
mm
If you change the gudgeon pin, you must also change the connecting rod small end bush.
Overhauling the piston rings
The piston rings must not show any signs of forcing or scoring. Spare pistons are supplied with piston rings and
gudgeon pin.
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