Owner's Manual

BR 500, BR 550, BR 600
English
6
Misaligned, damaged or broken cap
If the cap does not drop fully into the
opening when the positioning marks line
up and/or if the cap does not tighten
properly when twisted, the base of the
cap may be prematurely rotated (in
relation to the top) to the closed position.
Such misalignment can result from
handling, cleaning or an improper
attempt at tightening.
To return the cap to the open position for
installation, turn the cap (with the grip
up) until it drops fully into the tank
opening. Next, twist the cap
counterclockwise as far as it will go
(approx. 1/4 turn) – this will twist the
base of the cap into the correct position.
Then, twist the cap clockwise, closing it
normally.
If your cap still does not tighten properly,
it may be damaged or broken;
immediately stop use of the unit and
take it to your authorized STIHL dealer
for repair.
Screw Cap
See also the "Fueling" chapter in your
Instruction Manual for additional
information.
Before Starting
Keep the handles clean and dry at all
times; it is particularly important to keep
them free of moisture, pitch, oil, fuel mix,
grease or resin in order for you to
maintain a firm grip and properly control
your power tool.
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.
Left: Base of cap in closed posi-
tion (with open space)
Right: Base of cap correctly posi-
tioned for installation
001BA227 KN
452BA121 KN
Warning!
Unit vibrations can cause
an improperly tightened
fuel filler cap to loosen or
come off and spill quanti-
ties of fuel. In order to
reduce the risk of fuel
spillage and fire, tighten the fuel filler
cap by hand as securely as possible.
Warning!
Always check your power tool for proper
condition and operation before starting,
particularly the throttle trigger, setting
lever and stop switch. The throttle trig-
ger must move freely and always spring
back to the idle position. Never attempt
to modify the controls or safety devices.
Warning!
Never operate your power tool if it is
damaged, improperly adjusted or main-
tained, or not completely or securely
assembled.
Warning!
Check that the spark plug boot is
securely mounted on the spark plug – a
loose boot may cause arcing that could
ignite combustible fumes and cause a
fire.
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 con-
tact 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.