Engine Running Behavior
If engine running behavior is still
unsatisfactory after the air filter has been
serviced and the carburetor and throttle
cable have been adjusted correctly, the
cause may also be in the muffler.
Have the muffler checked for
contamination (coking) by a servicing
dealer!
STIHL recommends that maintenance
and repair work be carried out only by
authorized STIHL dealers.
BT 131
Lubricating the Gearbox
Check grease level after every 50 hours
of operation and re-lubricate if
necessary.
1
Remove the screw plug (1).
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If no grease can be seen on the
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inside of the screw plug (1): Screw
the tube (2) of STIHL gear lubricant
(special accessory) into the filler
hole.
Squeeze about 5 - 10 g (1/5 - 2/5
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oz) grease into the gearbox.
NOTICE
Do not completely fill the gearbox with
grease.
Unscrew the tube (2).
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Insert the screw plug (1) and tighten
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it down firmly.
Storing the Machine
For periods of about 3 months or longer
Remove the auger.
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Drain and clean the fuel tank in a
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well ventilated area.
Dispose of fuel properly in
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accordance with local
environmental requirements.
Run the engine until the carburetor
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is dry – this helps prevent the
carburetor diaphragms sticking
together.
Thoroughly clean the machine.
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Store the machine in a dry and
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secure location Keep out of the
reach of children and other
unauthorized persons.
English
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