Stihl 009 User Manual page 14

STIHL 009, 010, 011
3.5 Assembly of Piston and
Cylinder
Arrow must point toward flywheel
As there are no longer any matching
categories to observe the piston and
cylinder can be replaced separately.
Lubricate the needle cage in the small fixing pin; the piston ring can therefore
end with oil before installing the
piston. Position piston on connecting
rod so that stamped marking (arrow)
points toward the flywheel.
Now fit piston pin in piston and con-
necting rod. To do this, push assembly The cylinder`s exhaust port must face
drift through piston bore and connec-
ting rod (needle cage) to line the bores
concentrically. Push piston pin into the
piston. Move piston to and from to
ease insertion of the piston pin.
The piston pin must move freely
in its bore. Never use force during
assembly.
Now insert the two wire retainers and
make sure they are properly seated.
They must fit snugly in the grooves.
Fitting the cylinder
Fit new cylinder gasket on the crank-
case. Lubricate piston and piston ring
with oil. The piston ring groove has no
be fitted in any position.
Use the clamping strap to compress
the piston ring around the piston and
then push the cylinder over the piston.
toward the flywheel.
Align cylinder, insert cylinder base
screws and preload them initially to
a torque of 6-7 Nm (0.6-0.7 kpm).
Then finally tighten to a torque of
9.5-12 Nm (1.0-1.2 kpm).
Now reassemble the spark plug, igni
tion lead terminal, muffler, fan hous
ing, rear handle and handlebar,
throttle cable and handle moulding
and the chain sprocket cover.
Tightening cylinder base screws with
torque wrench
Use a new muffler gasket when
refitting the muffler.
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