COPY
‑ 6 ‑
Jun./13/ 11
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Apply engine oil to the grooves on the piston ring,
and fix piston rings in the followin g order: an oil
ring expander, lower oil ring side rail, upper oil
ring side rail, second ring, and top ring.
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Align the piston ring end gaps with one another.
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You can rather easily install it by pressing it in with
a screwdriver. But be careful not to scratch the
piston.
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Fix a piston circlip to the left side first.
Tool: Flat tip screwdriver with a fine tip
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Apply engine oil to the piston pin and con’rod, and
attach the piston pin.
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Put in the oil ring expander.
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Put in the lower oil ring side rail.
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Put in the upper oil ring side rail.
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Put in the 2nd ring.
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Put in the top ring.
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Fit the piston pin circlip of the kit securely into the
grooves in the circlip.
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Take off the plugged waste cloth.
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You can rather easily install it by pressing it in with a
screwdriver. But be careful not to scratch the piston.
Do the job carefully as, in some cases, the circlip comes
off flying while you are working. So, wear eyeglasses
for your eye protection against the circlip.
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It will make the piston installation easier to put the
piston pin into the piston about one-third beforehand.
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Install the piston with the triangular exhausst mark
facing downwards (exhaust side).
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Fix the cylinder base gasket and black rubber
packing.
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Check that two dowel pins are attached.
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Apply engine oil to the inside of the kit’s cylinder,
and spread the oil evenly with your fingers.
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Put the cylinder in place, by pressing it little by little
with fingers, being careful not to let piston ring end
gaps get out of position.
The difficulty degree of this job is high. Good luck
with your hard work
!
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Once the ring is inside the cylinder, pass the cam
chain through the cylinder, and put the cylinder into
the crankcase.
２．
Cylinder Installation
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Degrease the mating surfaces of the cylinder base
gasket for the cylinder and crankcase with thinner.
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And put in the cylinder.
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While pulling the cam chain, attach the guide roller.
Exhaust mark
Exhaust mark
Left-
side
トップリング
エキスパンダー
セカンドリング
120°
サイドレール
120°
120°
60°
60°
Top ring
2nd ring
Expander
Side rails
A letter “R” is stamped on the top
surfacce of the top ring, and “RN”
on the top surface of the 2nd ring.
トップリング
セカンドリング
サイドレール
エキスパンダー
ピストン
Pay attention to the cross section.
Top ring
2nd ring
Expander
Piston
Side rails
