Operating Instructions - Stihl FS 40 Notice D'emploi

As soon as the engine runs
Press down the throttle trigger
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lockout and open the throttle – the
choke lever moves to the run
position F. After a cold start, warm
up the engine by opening the
throttle several times.
WARNING
Make sure the carburetor is correctly
adjusted. The cutting attachment must
not rotate when the engine is idling.
Your machine is now ready for
operation.
Stopping the Engine
Move the stop switch in the direction
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of 0 – the engine stops – release
the stop switch – it springs back to
the run position.
Other Hints on Starting
Engine stalls in cold start position g or
under acceleration
Move the choke lever to < and
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continue cranking until the engine
runs.
FS 40, FS 40 C, FS 50, FS 50 C
Engine does not start in warm start
position <
Move the choke lever to g and
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continue cranking until the engine
runs.
If the engine does not start
Check that all settings are correct.
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Check that there is fuel in the tank
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and refuel if necessary.
Check that the spark plug boot is
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properly connected.
Repeat the starting procedure.
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Engine is flooded
Move the choke lever to F and
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continue cranking until the engine
runs.
Fuel tank run until completely dry
After refueling, press the manual
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fuel pump bulb at least five times –
even if the bulb is filled with fuel.
Set the choke lever to suit the
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engine temperature.
Now start the engine.
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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 the engine to run for a
short while at idle speed so that engine
heat can be dissipated by the flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the
engine to cool down. Empty the fuel tank
and keep the machine in a dry place,
well away from sources of ignition, until
you need it again. For longer out-of-
service periods – see "Storing the
Machine".
English
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