8
English / USA
BT 120 C
If you cannot set the correct idle speed,
have your STIHL dealer check your
earth auger and make proper
adjustments or repairs.
Working Conditions
Striking something hard in
the earth, such as a rock
or gravel, may cause the
drilling tool to slow down
suddenly or stop. In such
a situation, some or all of
the rotational force (reactive force) is
transferred to the powerhead and
handle frame of the earth auger which
can cause the auger powerhead and
handles to rotate suddenly in a
counterclockwise direction.
!Warning!
Work carefully in rocky ground or where
other solid objects may be present.
Keep throttle feed pressure to a
minimum. If you feel or hear the drilling
tool strike a solid object, release the
throttle trigger immediately and remove
the object before drilling is continued.
When drilling in heavy clay soil, bore
about 1/3 way and remove the auger
from the hole. Clean off auger then
continue in slow steps frequently
clearing drill.
!Warning!
You should hold your earth auger firmly
to control sudden jolts and reactive
forces. Be prepared to release the
throttle completely if the forces become
too great. If reactive forces are not
controlled, rotation of the handles may
result in severe jerking and loss of
control and may cause the handle frame
to strike you or throw you to the ground.
Your model earth auger is equipped with
an auger brake. If the auger hits
something it cannot drill through and the
powerhead begins to rotate so that the
auger brake activating lever strikes the
operator´s thigh and engages, the brake
is designed to stop the rotation of the
powerhead.
!Warning!
In order to reduce the risk of serious or
fatal injury from reactive forces, never
operate your earth auger without a
properly functioning auger brake.
If the auger becomes trapped in the
drillhole, turn off the engine immediately
and remove as descripted in the chapter
entitled "Removing a Trapped Auger".
427BA002 KN
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