Spark Arresting Screen In Muffler; Spark Plug - Stihl MS 261 C-M Manual De Instrucciones

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Spark Arresting Screen in
Muffler
If engine performance deteriorates,
N
check the spark arresting screen in
the muffler
Let the muffler cool down
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1
2
Unscrew the screw (1)
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Pull out spark arresting screen (2)
N
Clean the dirty spark arresting
N
screen, replace if damaged or
heavily carbonized
Refit the spark arresting screen
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Fit screw
N
44

Spark Plug

If there is a loss of engine power, the
machine is difficult to start or runs poorly
at idle, first check the spark plug.
Install a new spark plug after approx.
100 operating hours or earlier if the
electrodes are eroded/corroded.
The wrong fuel mix (too much engine oil
in the gasoline), a dirty air filter and
unfavorable running conditions (mostly
at part throttle etc.) affect the condition
of the spark plug. These factors cause
deposits to form on the insulator nose,
which may degrade performance.
Removing the Spark Plug
Remove the shroud – see "Shroud".
N
Pull off the spark plug boot.
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Clean away loose dirt from around
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the spark plug.
1
Insert the combination wrench
N
through the grommet (1) and turn it
as necessary to engage the spark
plug's hexagon.
Push the combination fully home
N
against the cylinder.
Unscrew the spark plug.
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Checking the spark plug
Clean the spark plug if it is dirty
N
Check the electrode gap (A) and
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readjust if necessary – see
"Specifications"
Use only resistor type spark plugs of
N
the approved range. See the
chapter "Specifications" in this
instruction manual
A
MS 261 C-M