Stihl FS 300

FS 300, FS 350, FS 400, FS 450, FS 480
English
23
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 perionds – see "Storing the
Machine".
If there is a noticeable loss of engine
power
FS 300, FS 350
N Turn the choke knob to g.
N Press in the tab (1).
N Remove the filter cover (2).
N Clean away loose dirt from around
the filter and inside the filter cover.
N Remove and check the filter
element (3) – replace if dirty or
damaged.
N Install the filter element in the filter
cover.
N Refit the filter cover.
FS 400, FS 450, FS 480
N Turn the choke knob to g.
N Loosen the screw (1).
N Remove the filter cover (2).
N Clean away loose dirt from around
the filter and inside the filter cover.
N Remove and check the filter
element (3) – replace if dirty or
damaged.
N Install the filter element in the filter
cover.
N Refit the filter cover.
Operating Instructions Cleaning the Air Filter
1
2
3
250BA022 KN
1
2
3
256BA074 KN