► Pull off the spark plug boot.
► Unscrew the spark plug.
20.2 Checking the Spark Plug
► Clean dirty spark plug.
► Check electrode gap (A) and readjust if neces‐
sary – see "Specifications".
► Rectify the problems which have caused foul‐
ing 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 inju‐
ries or damage to property.
► Use resistor type spark plugs with a properly
tightened adapter nut.
20.3 Installing the spark plug
► Install the spark plug and connect the spark
plug boot (press it down firmly) – reassembly
all other parts in the reverse sequence.
21 Storing the Machine
For periods of 3 months or longer
► Drain and clean the fuel tank in a well ventila‐
ted area.
► Dispose of fuel properly in accordance with
local environmental requirements.
► Run the engine until the carburetor is dry – this
helps prevent the carburetor diaphragms stick‐
ing together.
► Remove the saw chain and guide bar, clean
them and spray with corrosion inhibiting oil.
► Thoroughly clean the machine – pay special
attention to the cylinder fins and air filter.
► If you use a biological chain and bar lubricant,
e.g. STIHL BioPlus, completely fill the chain oil
tank.
► Store the machine in a dry, high or locked
location, out of the reach of children and other
unauthorized persons.
22 Checking the Chain
Sprocket
► Disengage the chain brake: Pull the hand
guard toward the front handle.
► Remove chain sprocket cover, saw chain and
guide bar
22.1 Replace the chain sprocket
21 Storing the Machine English
0458-508-8321-B 23
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