16
3,,3
Exposing the Cylinder
Top:
Removing
the
shroud
Bottom:
Unscrewing
the
muffler
First remove carburetor box cover,
unscrew spark
plug and take off the
shroud and
two-part
muffler"
The cooling fins of the cylinder are
now
easily accessible and can be
cleaned thoroughly" Check for
da-
mage (cracks, broken cooling fins,
etc),
3.4
Disassembly of Cylinder
and Piston
Removing
the
cylinder
base
screws
Drain fuel and oil tanks, Remove the
carburetor (see
10.4) and unscrew
the four cylinder base screws" Care-
fully pull the cylinder off the piston
and press the
elbow connector for-
wards and
,out of the tank housing"
Before removing the piston it must
be decided
whether
or not the
crankshaft is to be removed,
Le. the
wooden
block used to lock the
crankshaft
- to facilitate removal of
the
flywheel and hub (Quickstop)
or
clutch spider (standard) - must be
fitted be1ween the crankcase and
the piston"
To
remove the piston, first take out
the two wire retainers and press the
piston pin out
of
the piston and nee-
dle cage by means of drift
11108934700.
If the piston pin is stuck as a result
of carbonization, tap it out lightly
with a hammer and the drift. It is
Top:
Removing
the
wire
retainers
Bottom:
Pushing
out
the
piston
pin
essential to counterhold the piston
to insure that no
jolts are transmitted
to the connecting
rod"
Remove the
piston"
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