Replacing The Air Filter; Adjusting The Carburetor; Spark Plug - Stihl KombiEngine ECOSPEED KM 94 R Instruction Manual

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9.2 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.
9.3 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".

10 Replacing the Air Filter

Do not remove the filter cover or replace the air
filter as long as there is no noticeable loss of
power.
10.1 If there is a noticeable loss of
engine power
1
2
1
► Turn the choke knob to g.
► Take out the screws (1).
► Remove the filter cover (2).
► Clean away loose dirt from around the filter.
► Remove the filter element (3).
► Replace dirty or damaged filters.
► Replace any damaged parts.
► Fit the new air filter in the filter housing (4).
► Fit the filter cover.
► Fit the screws and tighten them down firmly.
12
4
3

11 Adjusting the Carburetor

The carburetor of the machine has been adjus‐
ted for optimum performance and fuel efficiency
in all operating states at the factory.
11.1 Setting the idle speed
Engine stops when idling
► Slowly turn idle speed screw (LA) clockwise
until the engine runs smoothly – the working
tool must not move along
Working tool turns when idling
► Turn the idle speed adjusting screw (LA)
slowly counterclockwise until the working tool
stops turning
WARNING
If the working tool continues to keep rotating in
idle even after adjustment, have the power tool
checked by a servicing dealer.

12 Spark Plug

► If the engine is down on power, difficult to start
or runs poorly at idle speed, first check the
spark plug.
► Fit a new spark plug after about 100 operating
hours – or sooner if the electrodes are badly
eroded. Install only suppressed spark plugs of
the type approved by STIHL – see "Specifica‐
tions".
10 Replacing the Air Filter
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