Engine Management; Adjusting The Carburetor; Spark Plug - Stihl MM 56 Notice D'emploi

Engine Management

Exhaust emissions are controlled by the
design of the engine and components
(e.g. carburation, ignition, timing and
valve or port timing).
MM 56 C

Adjusting the Carburetor

The carburetor has been set at the
factory to provide an optimum fuel-air
mixture under most operating
conditions.
Adjusting Idle Speed
Engine stops while idling
Warm up the engine for about
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3 minutes.
Turn the idle speed screw (LA)
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slowly clockwise until the engine
runs smoothly – the MultiTool must
not run.
MultiTool runs when the engine is idling
Turn the idle speed screw (LA)
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counterclockwise until the MultiTool
stops moving and then turn the
screw about another 1/2 to 3/4 turn
in the same direction.
WARNING
If the MultiTool continues to run when
the engine is idling, have your machine
checked and repaired by your servicing
dealer.

Spark Plug

If the engine is down on power,
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difficult to start or runs poorly at idle
speed, first check the spark plug.
Fit a new spark plug after about 100
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operating hours – or sooner if the
electrodes are badly eroded. Install
only suppressed spark plugs of the
type approved by STIHL – see
"Specifications".
Removing the Spark Plug
Shut off the engine.
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3
The spark plug boot (2) is under the
cap (1).
WARNING
The cap (1) protects the spark plug boot
from damage. Do not operate the
machine without a cap – replace a
damaged cap.
Remove the cap (1).
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Pull off the spark plug boot (2).
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Allow the spark plug (3) to cool
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down.
Unscrew the spark plug (3).
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English
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