Spark Arresting Screen In Muffler; Spark Plug - Stihl MS 193 T Instruction Manual

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Spark Arresting Screen in
Muffler
If the engine is down on power,
N
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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26

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
1
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
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2
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3
Insert a suitable tool in the spark
plug boot (3).
Pry off the spark plug boot.
Unscrew the spark plug.
MS 193 T, MS 193 TC