3-17
ENGINE
PISTON
The following are reminders for piston installation:
Rub a small quantity of MOLY PASTE onto the piston
pin.
When fitting the piston, turn arrow mark on the piston
head to exhaust side.
CYLINDER
Before mounting the cylinder, oil the big end and small
end of the conrod and also the sliding surface of the pis-
ton.
Fit dowel pins
to crankcase and then fit gasket.
Place a clean rag over the cylinder base to prevent
piston pin circlip from dropping into crankcase, and
then fit the piston pin circlip with long-nose pliers.
MOLY PASTE
Hold each piston ring with the piston rings properly
spaced and insert them into the cylinder.
Check to insure that the piston rings are properly
inserted into the cylinder skirt.
CAUTION
Use a new piston pin circlip to prevent circlip fail-
ure which will occur with a bent one.
CAUTION
To prevent oil leakage, do not use the old gasket
again, always use new one.
CAUTION
When mounting the cylinder, after attaching
camshaft drive chain, keep the camshaft drive
chain taut. The camshaft drive chain must not be
caught between cam drive chain sprocket and
crankcase when crankshaft is rotated.
CAUTION
There is a holder for the bottom end of the cam
chain guide cast in the crankcase. Be sure that
the guide is inserted properly or binding of the
cam chain and guide may result.
