Operating Instructions; Releasing A Trapped Auger - Stihl BT 121 Instruction Manual

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. To avoid
condensation, fill 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".
BT 121
Working with shaft extension (special
accessory)
Do not fit the shaft extension until the full
length of the auger is in the hole.
Starting a hole with the shaft
extension fitted increases the risk
of personal injury because the unit
is then at chest height and cannot
be controlled properly. For the
same reason the shaft extension
must be removed before the
auger is pulled out of the hole.
Inspection by a specialist
If the machine is used commercially, it
mist be inspected at least once a year by
a specialist.
Specialists are persons with the
technical training and experience
necessary to assess the safe working
condition of the earth auger.

Releasing a Trapped Auger

If the auger jams in the drill hole
N Shut off the engine immediately.
N Move the slide control to STOP-0.
N Engage the auger brake by moving
the activating lever to position A.
N Rotate the whole machine
counterclockwise to unwind the
auger from the ground.
English
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