MS 170, MS 170 C, MS 180, MS 180 C
English
35
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 0.5 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
STIHL recommends use of original
STIHL chain sprockets in order to
ensure optimal functioning of the chain
brake.
N Use a screwdriver to remove the E-
clip
N Remove washer
N Remove the chain sprocket
together with the needle cage from
the crankshaft
Install chain sprocket
N Clean crankshaft stub and needle
cage and lubricate with STIHL
lubricant (special accessory)
N Slide needle cage onto the
crankshaft stub
N After refitting, turn the chain
sprocket approx. 1 full turn so that
the carrier for the oil pump drive
engages
N Refit washer and E-clip on the
crankshaft
Storing the Machine Checking and Replacing the
Chain Sprocket
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