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Stihl MS 251C User Manual

Stihl MS 251C
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MS 251, MS 251 C
English
47
Installing the spark plug
N Fit spark plug by hand
N Tighten the spark plug and press on
the spark plug boot firmly
N Fit the shroud – see "Shroud"
For periods of 3 months or longer
N Drain and clean the fuel tank in a
well ventilated area.
N Dispose of fuel properly in
accordance with local
environmental requirements.
N Run the engine until the carburetor
is dry – this helps prevent the
carburetor diaphragms sticking
together.
N Remove the saw chain and guide
bar, clean them and spray with
corrosion inhibiting oil.
N Thoroughly clean the machine pay
special attention to the cylinder fins
and air filter.
N If you use a biological chain and bar
lubricant, e.g. STIHL BioPlus,
completely fill the chain oil tank.
N Store the machine in a dry, high or
locked location, out of the reach of
children and other unauthorized
persons.
N Remove chain sprocket cover, saw
chain and guide bar.
N Release chain brake – pull hand
guard against the front handle
Fit new chain sprocket
after use of two saw chains or
earlier
if the wear marks (arrows) are
deeper than 0.02 in (0.5 mm) –
otherwise the service life of the saw
chain is reduced use check gauge
(special accessory) to test
Using two saw chains in alternation
helps preserve the chain sprocket.
Use only STIHL original chain sprockets
to help ensure reliable functioning of the
chain brake.
2310BA012 KN
Storing the Machine Checking and Replacing the
Chain Sprocket
001BA121 KN

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Stihl MS 251C Specifications

General IconGeneral
Weight4.9 kg
Powerhead Weight4.9 kg
Chain Pitch3/8"
Bar Lengths Available35 cm (14 inches), 40 cm (16 inches)
Vibration Levels Left/Right5.5 m/s²

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