Stihl BT 121 - Page 18

17BT 121
English / USA
: Stand the unit on the tip of the
auger.
: Disengage the auger brake by
moving the activating lever to
position B. Your earth auger is now
ready for operation.
Make sure the carburetor is
correctly adjusted – the auger must
not rotate when the engine is idling.
To shut down the engine:
: Push the slide control in direction of
c to $
At very low outside temperatures:
Allow engine to warm up
As soon as the engine runs:
: Blip the throttle trigger to disengage
the starting throttle position – the
slide control moves to the normal
run position # and the engine
returns to idle speed.
: Open throttle slightly – warm up the
engine for a short period.
If the engine does not start:
If you did not turn the choke knob to e
quickly enough after the engine began to
fire, the combustion chamber has
flooded.
: Turn the choke knob to e
: Set the slide control, trigger
interlock and throttle trigger to the
starting throttle position.
: Start the engine – pull the starter
rope briskly – 10 to 20 pulls may be
necessary.
If the engine still does not start:
: Push the slide control in direction of
c to $
: Pull off the spark plug boot (1).
: Unscrew and dry off the spark plug.
: Open the throttle wide.
: Pull the starter rope several times
to clear the combustion chamber.
: Fit the spark plug and connect the
spark plug boot – press it down
firmly.
: Move the slide control to START.
: Move the choke knob to e even if
the engine is cold.
: Now start the engine.
427BA009 KN
1