Stihl BT 121 Instruction Manual page 6

English
– Slide control / stop switch must
move easily to STOP or 0
– Auger brake in good working order.
– Smooth action of throttle trigger and
throttle trigger interlock – throttle
trigger must return automatically to
idle position.
– Check that the spark plug boot is
secure – a loose boot may cause
arcing that could ignite combustible
fumes and cause a fire.
– Never attempt to modify the controls
or the safety devices in any way.
– Keep the handles dry and clean –
free from oil and dirt – for safe
control of the power tool.
To reduce the risk of personal injury,
do not operate your power tool if it is
damaged or not properly assembled.
Starting the engine
Start the engine at least 3 meters from
the fueling spot, outdoors only.
Place the unit on level ground, make
sure you have secure footing, hold the
unit securely. Check that the drilling tool
is not touching the ground or any other
object since it may begin to rotate when
the engine starts.
Your power tool is designed to be
operated by one person only. Do not
allow other persons in the work area –
even when starting. To reduce the risk
of injury, avoid contact with the drilling
tool.
Do not drop start the power tool – start
the engine as described in the
instruction manual.
4
Check idle speed setting: The drilling
tool must not rotate when the engine is
idling with the throttle trigger released.
To reduce the risk of fire, keep hot
exhaust gases and hot muffler away
from easily combustible materials (e.g.
wood chips, bark, dry grass, fuel).
Holding and Controlling the Power
Tool
Always hold the unit firmly with both
hands on the handles.
Make sure you always have good
balance and secure footing – auger
brake lever against your left thigh.
Wrap your fingers and thumbs around
the handles. Right hand on the control
handle, even if you are left-handed.
During Operation
In the event of impending danger or in
an emergency, switch off the engine
immediately by moving the slide control
/ stop switch to 0 or STOP.
Do not allow any other persons in the
work area. To reduce the risk of injury,
keep a sufficiently safe distance away
from other persons.
The correct engine idle speed is
important to ensure that the drilling tool
stops rotating when you let go of the
throttle trigger. If the drilling tool
continues to rotate when the engine is
idling, have the machine checked by
your servicing dealer. Check and correct
the idle speed setting regularly.
Take special care in slippery conditions
– damp, snow, ice, on slopes or uneven
ground.
Watch out for obstacles: Roots, tree
stumps or holes which could cause you
to trip or stumble.
Make sure you always have good
balance and secure footing.
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
To reduce the risk of accidents, take a
break in good time to avoid tiredness or
exhaustion.
Work calmly and carefully – in daylight
conditions and only when visibility is
good. Stay alert so as not to endanger
others.
BT 121