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19 Cleaning
19.2 Cleaning the Spark Plug
WARNING
To reduce the risk of fire and burn injury, use only spark
plugs authorized by STIHL. Always press the spark plug
boot snugly onto the spark plug terminal.
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WARNING
Do not use a spark plug with a detachable SAE adapter
terminal (1). Arcing may occur that could ignite combustible
fumes and cause a fire. This can result in serious injuries or
damage to property. Only use resistor type spark plugs with
solid, non-threaded terminals (2).
Using the wrong fuel mix (too much engine oil in the
gasoline), a dirty air filter, and unfavorable running
conditions (running for extended periods at partial throttle)
can affect the condition of the spark plug and cause deposits
to form on the insulator nose, degrading performance.
To clean the spark plug:
► Shut off the engine, @ 12.
► Allow the blower to cool down.
0458-459-8221-C
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► Remove the spark plug boot (1).
► Clean the area around the spark plug with a damp cloth or
soft brush.
► Unscrew the spark plug (2) and clean it with a damp cloth.
► If the spark plug is corroded, replace it.
► If the spark plug is damp, dry it thoroughly before re-
inserting it.
► Insert the spark plug and tighten it down firmly.
► Connect the spark plug boot and press it down firmly.
19.3 Cleaning the Spark Arresting Screen
WARNING
To reduce the risk of fire from the emission of hot particles,
Never operate your blower with a missing or damaged spark
arresting screen. Never modify your muffler or spark
arresting screen. To reduce the risk of fire from the buildup
of debris such as pine needles, branches or leaves, make
sure the muffler plugs are in place before starting work.
NOTICE
Some state or federal laws or regulations may require a
properly maintained spark arrester for certain uses.
To clean the spark arrester screen:
► Shut off the engine, @ 12.
► Allow the blower and muffler to cool down.
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