Operating Instructions; Releasing A Trapped Auger; Cleaning The Air Filter - Stihl BT 45 Instruction Manual

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Operating Instructions

During break-in period
A factory-new machine should not be
run at high revs (full throttle off load) for
the first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During Operation
After a long period of full throttle
operation, allow the engine to run for a
short while at idle speed so that engine
heat can be dissipated by the flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the
engine to cool down. Empty the fuel tank
and keep the machine in a dry place,
well away from sources of ignition, until
you need it again. For longer out-of-
service periods – see "Storing the
Machine".
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Releasing a Trapped Auger

If the auger jams in the drill hole
Let go of the throttle trigger so that
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the engine returns to idling speed.
Move rotary knob to R position
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(counterclockwise rotation) – it may
be necessary to rotate the machine
a little until the knob can be moved
to the required position.
Hold the machine firmly with both
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hands on the handles.
Operate the throttle trigger.
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Increase engine speed and slowly
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pull the drilling tool out of the drill
hole.

Cleaning the Air Filter

If there is a noticeable loss of engine
power
4
3
1
2
Set the choke lever to l.
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Loosen the screw (1).
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Remove the air filter cover (2).
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Clean away loose dirt from around
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the filter.
Take the air filter (3) out of the filter
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housing (4).
Replace with a new filter – or, as a
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temporary measure, knock it out or
blow it clear – do not wash.
Replace any damaged parts.
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Install the filter in the filter housing.
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BT 45