Operating Instructions; Cleaning The Air Filter - Stihl FS 38 Instruction Manual

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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".
18

Cleaning the Air Filter

If there is a noticeable loss of engine
power
2
1
Set the choke lever to g.
N
Press in the tab (1) and swing the
N
filter cover (2) down.
Clean away loose dirt from around
N
the filter.
4
3
Remove the felt element (3) from
N
the filter housing (4) and replace it –
knock out or blow out as a
temporary measure – do not wash.
Replace damaged parts.
N
Fit the felt element (3) in the filter
N
housing (4).
Close the filter cover so that it snaps
N
into position.
FS 38