Spark Arresting Screen in
Muffler
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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Remove the sprocket cover.
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2
3
Take out the screw (1).
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Remove the baffle plate (2).
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Remove the spark arresting
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screen (3).
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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Fit the baffle plate.
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MS 193 T
Spark Plug
If the engine is down on power, difficult
to start or runs poorly at idling speed,
first check the spark plug.
Install a new spark plug after approx.
100 operating hours or earlier if the
electrodes are badly 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.
1
Removing the Spark Plug
Open the twist lock (1) in the
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direction of the arrow.
Remove the carburetor box
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cover (2).
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1
2
3
Insert a suitable tool in the spark
plug boot (3).
Pry off the spark plug boot.
Unscrew the spark plug.
English
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