KAYO MOTOR AU200, Руководство по обслуживанию

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5
发动机
5- 32
Remove the cylinder head (
→
5.5.5)
Remove the positioning pin and paper pad
Remove the cylinder
Note: When removing the cylinder, the timing
chain must never fall into the crankcase.
Scrap the paper gasket remainings on the cylinder
surface with a scraper.
Note: If the paper gasket is immersed in gasoline,
it is easy to disassemble. Avoid damage to the
cylinder contact surface during this operation.
Cylinder inspection
Check the cylinder for wear or damage
The inner diameter of the cylinder should be
measured in three positions, that is, the top, middle
and bottom of the piston stroke, and should be in two
directions at right angles to each other.
Maintenance limit: 62.1mm
Measure the taper and out of roundness
Out of roundness: 0.10mm
：
0.10mm
5.6.3 Piston disassembly
Remove the piston pin retaining
ring with pliers
Note: The retaining ring cannot
be dropped into the crankcase.
Press the piston pin out of the
piston and remove the piston
Piston/piston ring inspection
Measuring the gap between the
piston ring and the groove of the
piston ring
Maintenance limit:
First ring: 0.09mm
Second ring: 0.09mm
Remove the piston ring
Note: Do not damage the piston
ring when disassembling.
Top
Middle
Bottom