Cleaning The Air Filter; Engine Management - Stihl MS 250 Instruction Manual

Cleaning the Air Filter

If there is a noticeable loss of engine
power
Press down the throttle trigger
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lockout and move the Master
Control lever to choke closed l.
Turn the knob 90° to the left.
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Lift off the carburetor box cover
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vertically.
Always replace damaged filters.
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Clean away loose dirt from around
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the filter.
1
Place fingers behind the air filter (1),
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press thumbs against the housing
and swing the filter in direction of
rear handle.
MS 250
NOTICE
To avoid damaging the filter, do not use
tools for removing and installing the air
filter.
Blow out the filter with compressed
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air from the clean air side.
If the filter fabric is caked with dirt or no
compressed air is available:
Wash the filter in a clean, non-
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flammable solution (e.g. warm
soapy water) and then dry.
Reinstall the air filter.
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Engine Management

Exhaust emissions are controlled by the
design of the engine and components
(e.g. carburation, ignition, timing and
valve or port timing).
English
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