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English / USA
BR 340, BR 340 L, BR 420, BR 420 C
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 engine to run for a while
at idle speed so that the heat in the
engine can be dissipated by flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After finishing work
Storing for short period:
Wait for engine to cool down. To avoid
condensation, fill the fuel tank and keep
the unit in a dry place until you need it
again. Storing for a long period:
see chapter "Storing the Machine".
The BR 340/420 blower is designed for
single-handed operation. It is carried as
a backpack and operated with the right
hand on the control handle.
The powerful ground-level airstream can
be aimed highly accurately and
effectively. It enables the operator to
quickly blow-sweep large areas.
The blower can be used for clearing
leaves, grass, paper, dust and light snow
in yards, gardens, sports stadiums,
parks, driveways and parking lots. It is
also suitable for drying cars and clearing
forest paths.
Operate the machine only with a
complete and properly mounted
blower tube – see "Assembling the
Blower".
Using the vacuum attachment*
The vacuum attachment is used to pick
up leaves, grass and other materials.
Even big leaves, pieces of cardboard
and bark fit through the large diameter
suction tube.
Never pick up hot or burning
substances, e.g. smoldering ashes,
glowing cigarettes. Never vacuum
close to a fire or other naked flames.
* see “Guide to Using this Manual”
Operating Instructions Using the Blower
373BA034 KN
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