BR 500, BR 550, BR 600
English
7
WARNING
To reduce the risk of injury from parts 
thrown by the fan wheel, check the fan 
housing for damage (cracks or holes 
that could allow foreign objects to 
contact the fan wheel). If any such 
damage is found, stop using the unit and 
contact your STIHL dealer for repair.
WARNING
Adjust carrying harness to suit your size 
before starting work.
In an emergency, you may slip out of the 
harness and throw off the machine 
quickly. Try slipping out of the harness a 
number of times before using the 
machine in order to become 
accustomed to it. Do not throw off the 
machine while practicing as it could 
damage the machine.
Starting
To reduce the risk of fire and burn 
injuries, start the engine at least 10 feet 
(3 m) from the fueling spot, outdoors 
only.
WARNING
Your power tool is a one-person 
machine. To reduce the risk of eye or 
other injury from thrown objects, insure 
that bystanders are at least 50 feet 
(15 m) away during use. Stop operation 
immediately if you are approached.
WARNING
This unit is equipped with an ignition 
system that is normally in operational 
readiness. After the setting lever is used 
to stop the engine, it automatically 
springs back to the "on" position. If the 
engine is warm, it may be possible to 
start it by simply pulling the starter rope, 
with no further adjustments. To reduce 
the risk of injury, be particularly alert to 
keep children away from the unit.
For specific starting instructions, see the 
appropriate section of your manual. 
Place the power tool on firm ground or 
other solid surface in an open area. 
Maintain good balance and secure 
footing.
WARNING
When you pull the starter grip, do not 
wrap the starter rope around your hand. 
Do not let the grip snap back, but guide 
the starter rope to rewind it properly. 
Failure to follow this procedure may 
result in injury to your hand or fingers 
and may damage the starter 
mechanism.
Once the engine has started, 
immediately blip the throttle trigger, 
which should cause the choke knob to 
move to the run position and allow the 
engine to slow down to idle.
During Operation
Holding and Controlling the Power Tool
The blower is designed for single-
handed operation with the right hand on 
the control handle. It should be carried 
as a backpack with the straps of the 
harness over both shoulders.
WARNING
To reduce the risk of loss of control, 
never carry the unit with the strap(s) 
over one shoulder.
Wrap your fingers tightly around the 
handle, keeping the control handle 
cradled between your thumb and 
forefinger. Keep your hand in this 
position to have your machine under 
control at all times.
WARNING
Special care must be taken in slippery 
conditions (wet ground) and in difficult, 
overgrown terrain. Watch for hidden 
obstacles such as tree stumps, roots, 
rocks, holes and ditches to avoid 
stumbling. For better footing, clear away 
fallen branches, scrub and cuttings. Be 
extremely cautious when working on 
slopes or uneven ground.