STIHL 009, 010, 011 14
3.5 Assembly of Piston and
Cylinder
Use a new muffler gasket when
refitting the muffler.
Tightening cylinder base screws with
Arrow must point toward flywheel Fitting the cylinder torque wrench
Now insert the two wire retainers and Now reassemble the spark plug, igni
make sure they are properly seated. tion lead terminal, muffler, fan hous
They must fit snugly in the grooves. ing, rear handle and handlebar,
throttle cable and handle moulding
and the chain sprocket cover.
As there are no longer any matching Fit new cylinder gasket on the crank-
categories to observe the piston and case. Lubricate piston and piston ring
cylinder can be replaced separately. with oil. The piston ring groove has no
Lubricate the needle cage in the small fixing pin; the piston ring can therefore
end with oil before installing the be fitted in any position.
piston. Position piston on connecting
rod so that stamped marking (arrow)
points toward the flywheel. Use the clamping strap to compress
the piston ring around the piston and
Now fit piston pin in piston and con- then push the cylinder over the piston.
necting rod. To do this, push assembly The cylinder`s exhaust port must face
drift through piston bore and connec- toward the flywheel.
ting rod (needle cage) to line the bores
concentrically. Push piston pin into the
piston. Move piston to and from to Align cylinder, insert cylinder base
ease insertion of the piston pin. screws and preload them initially to
a torque of 6-7 Nm (0.6-0.7 kpm).
The piston pin must move freely Then finally tighten to a torque of
in its bore. Never use force during 9.5-12 Nm (1.0-1.2 kpm).
assembly.
To Next Page
Loading...
Need help?
General
