7. CYLINDER/PISTON
7-4
Piston Removal
Plug crankcase opening with a cleaning cloth to
prevent from piston pin snap ring or other foreign
materials falling into crankcase when
disassembling.
Hold another snap ring with pliers.
Push out the piston pin from the side that not
removed the snap ring.
Inspection
Measure clearance between piston ring and its
grooves.
Service Limit: Top ring: 0.09 mm
2
nd
ring: 0.09 mm
Remove piston rings
Check if the piston rings are damaged or its
grooves are worn.
Caution
Pay attention to remove piston rings because
they are fragile.
Place piston rings respective into cylinder below
20 mm of cylinder top. In order to keep the piston
rings in horizontal level in cylinder, push the rings
with piston.
Service Limit: Top ring: 0.50 mm
2
nd
ring: 0.65 mm
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