Page 2 Technical Information 08.2005
TI_08_2005_11_01_02.fm
The new STIHL BR 500, BR 550 and BR 600
backpack blowers are three ideal models for
demanding, professional users.
The BR 500 is especially low-noise yet highly
powerful for use in noise-sensitive areas.
The BR 550 has an attractive price with far above-
average blowing strength.
The BR 600 is particularly powerful - one of the
strongest blowers in the world.
The STIHL 4-MIX engine of the new blowers sets
benchmarks in blowing strength, economy and
environmental friendliness.
Comfort is increased with the simplified starting
procedure. This is realised with the newly designed
control handle and central control section that holds
all operating elements required for starting.
Another innovation is the electrostatic arrester in the
blowing system that protects the user from
electrostatic shock.
The devices are equipped with an adjustable
carrying system with breathing padding for superior
wearing comfort.
The holder for the blowing system makes the
devices easier to transport and saves space in
storage.
1. Technical description
1.1 Blowing system with electrostatic
arrester
The extremely high flow of air from the new blowers
generates friction in the blower tubes. The friction
can build up an electrostatic charge.
The arrester in the blower tube creates a conductive
link to the engine block to prevent the build up of
electrostatic charges that can lead to sparkover.
. Before starting the blower, check to see if it is
intact and seated correctly. If the arrester is
damaged, replace it (see 5.6).
. Never operate the machine without an arrester.
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