Stihl MS 193 T Instruction Manual page 29

3
Insert a suitable tool in the spark
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plug boot (3).
Pry off the spark plug boot.
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Unscrew the spark plug.
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MS 193 T
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".
Rectify the problems which have
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caused fouling of the spark plug.
Possible causes are:
Too much oil in fuel mix.
–
Dirty air filter.
–
Unfavorable running conditions.
–
WARNING
Arcing may occur if the adapter nut (1) is
loose or missing. Working in an easily
combustible or explosive atmosphere
may cause a fire or an explosion. This
can result result in serious injuries or
damage to property.
Use resistor type spark plugs with a
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properly tightened adapter nut.
Installing the Spark Plug
Screw the spark plug into the
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cylinder.
Connect the spark plug boot (press
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it down firmly).
A
Fit the carburetor box cover.
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1
English
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