Releasing A Trapped Auger; Cleaning The Air Filter; Motor Management - Stihl BT 121 Manual De Instrucciones

Releasing a Trapped Auger

If the auger jams in the drill hole, shut off
the engine immediately.
: Move the slide control in direction of
c to $
: Engage the auger brake by moving
the activating lever to position A.
: Now rotate the whole machine to
the left – counterclockwise – to
unwind the auger from the ground.
BT 121

Cleaning the Air Filter

1
3
2
If there is a noticeable loss of
engine power
: Turn choke knob to g
: Press in the tab (1).
: Remove the filter cover (2).
: Clean away loose dirt from inside of
filter cover and around the filter.
: Remove the filter element (3) and
check it – if it is dirty or damaged, fit
a new element.
: Fit the flter element in the filter
cover.
: Push the filter cover into position.
English / USA

Motor Management

Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components (e.g.
carburation, ignition, timing and valve or
port timing) without the addition of any
major hardware.
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