Instruction Manual

BT 45
English
17
At very low outside temperatures
N As soon as the engine runs: Blip the
throttle trigger to disengage the
starting throttle lock – it moves to the
normal run position and the engine
returns to idle speed.
N Open throttle slightly – warm up the
engine for a short period.
If engine does not start
If you did not move the choke lever
quickly enough to j (warm start) after
the engine began to fire, the engine is
flooded.
N Set choke lever to j and
N Set the throttle trigger to the starting
throttle position.
N Start the engine by pulling the
starter rope briskly – 10 to 20 pulls
may be necessary.
If the engine still does not start
N Remove the spark plug – see
"Spark Plug".
N Dry the spark plug.
N Open the throttle wide.
N Crank the engine several times with
the starter to clear the combustion
chamber.
N Install the spark plug – see "Spark
Plug".
N Move the stop switch to F and
N set choke lever to j – (warm start
position) even if the engine is cold.
N Now start the engine.
If fuel tank has been run completely dry
and then refueled
N Press the fuel pump bulb at least
five times.
N Now start the engine.
During break-in period
A factory-new machine should not be
run at high revs (full throttle off load) for
the first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During Operation
After a long period of full throttle
operation, allow the engine to run for a
short while at idle speed so that engine
heat can be dissipated by the flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the
engine to cool down. Empty the fuel tank
and keep the machine in a dry place,
well away from sources of ignition, until
you need it again. For longer out-of-
service periods – see "Storing the
Machine".
Operating Instructions