Operating Instructions; Cleaning The Air Filter - Stihl FS 120 Notice D'emploi

English
:
Unscrew and dry off the spark plug.
:
Open the throttle wide.
:
Crank the engine several times with
the starter to clear the combustion
chamber.
:
Refit the spark plug. Connect the
spark plug boot (press it down
firmly).
:
Move the slide control to START.
: Set the choke knob to e –
even if engine is cold.
:
Now start the engine.
Throttle cable adjustment
:
Check adjustment of throttle cable –
see chapter on "Adjusting the
Throttle Cable".
Tank run until dry
:
After refueling, press the fuel pump
bulb at least five times – even if bulb
is filled with fuel.
:
Set choke knob according to engine
temperature.
:
Now start the engine.
36

Operating Instructions

During break-in period
A factory new machine should not be run
at high revs (full throttle off load) for the
first three tank fillings. This avoids
unnecessary high loads during the
break-in period.
As all moving parts have to bed in during
the break-in period, the frictional
resistances in the engine are greater
during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During operation
After a long period of full-throttle
operation, allow engine to run for a while
at idle speed so that the heat in the
engine can be dissipated by flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After finishing work
Storing for short period:
Wait for engine to cool down. Drain the
fuel tank and keep the unit in a dry place,
away from sources of ignition, until you
need it again.
Storing for a long period:
see chapter "Storing the Machine".

Cleaning the Air Filter

1
3
2
Dirty air filters reduce engine power,
increase fuel consumption and make
starting more difficult.
If there is a noticeable loss of engine
power:
: Set the choke knob to g
:
Press in the tab (1) and remove the
filter cover (2).
:
Clean away loose dirt from inside
the cover and around the filter (3).
FS 120, FS 200, FS 250