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

Spark Arresting Screen in
Muffler
In some countries the muffler is
equipped with a spark arresting screen.
If the engine is down on power,
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check the spark arresting screen in
the muffler.
Wait for the muffler to cool down.
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1
2
Take out the screw (1).
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Pull out the spark arresting
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screen (2).
Clean the spark arresting screen. If
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the screen is damaged or heavily
carbonized, fit a new one.
Refit the spark arresting screen.
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Insert the screw and tighten it down.
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MS 261, MS 261 C

Spark Plug

If engine is down on power, difficult to
start or runs poorly at idling speed, first
check the spark plug.
Fit a new spark plug after approx. 100
operating hours or earlier if the
electrodes are badly eroded.
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 result in trouble in operation.
Removing the spark plug
Remove the shroud – see "Shroud".
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Move the Master Control lever to the
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stop position (0).
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
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through the grommet (1) and turn it
as necessary to engage the spark
plug's hexagon.
Push the combination fully home
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against the cylinder.
Unscrew the spark plug.
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Checking the Spark Plug
Clean dirty spark plug.
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Check electrode gap (A) and
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readjust if necessary – see
"Specifications".
Use only resistor type spark plugs of
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the approved range.
Rectify problems which have caused
fouling of spark plug:
English
A
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