Stihl BT 121 Instruction Manual page 6

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Fueling
Gasoline is an
extremely flammable
fuel. Keep clear of naked
flames and fire. Do not
spill any fuel – do not
smoke.
Always shut off the engine before
refueling.
Do not fuel a hot engine – fuel may spill
and cause a fire.
Open the fuel cap carefully to allow any
pressure build-up in the tank to release
slowly and avoid fuel spillage.
Fuel your power tool in a well-ventilated
area, outdoors only. If you spill fuel, wipe
the machine immediately – if fuel gets on
your clothing, change immediately.
After fueling, tighten down
the fuel cap as securely
as possible.
This reduces the risk of
unit vibrations causing the
fuel cap to loosen or come off and spill
quantities of fuel.
To reduce the risk of serious or fatal
burn injuries, check for fuel leakage. If
fuel leakage is found, do not start or run
the engine until leak is fixed.
BT 121
Before Starting
Check that your power tool is properly
assembled and in good condition – refer
to appropriate chapters in the instruction
manual:
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 spark plug boot is secure
– a loose boot may cause arcing
that could ignite combustible fumes
and cause a fire.
Never attempt to modify any of the
controls or safety devices.
Handles dry and clean – free from
oil and dirt – for safe control of the
machine.
To reduce risk of accidents and personal
injury, do not operate your machine 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 machine on firm ground in an
open area. Make sure you have good
balance and secure footing. Hold the
machine securely.
Your power tool is a one-person unit. Do
not allow other persons in the general
work area, even when starting.
To reduce the risk of injury, avoid contact
with the drilling tool.
Do not drop start the power tool. The
correct starting procedure is described
in your instruction manual.
Check the idle speed setting. The drilling
tool must not move 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).
English
5

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