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► Inspect the work area. Remove
stones, glass, pieces of metal or
other objects that could be thrown by
the cutting attachment, damage the
cutting attachment or cause damage
to property (e.g., parked vehicles,
windows).
► Always wear proper eye pro‐
15m (50ft)
► To reduce the risk of damage to property,
also maintain this distance from such
objects as vehicles and windows.
► Maintaining a minimum distance of 50 ft.
(15 m) cannot eliminate the potential risk of
personal injury and property damage from
thrown objects.
► Switch off the motor immediately if you are
approached while working with the trimmer.
■ Your trimmer is equipped with a deflector. To
reduce the risk of personal injury from thrown
objects and contact with the cutting attach‐
ment:
► Never operate the trimmer with a
damaged or missing deflector.
► The cutting attachment and deflector
must be an approved combination.
► Keep the deflector properly adjusted
at all times.
■ Use of metal cutting attachments, wire or
metal-reinforced line or other non-approved
cutting attachments is not authorized and
could be extremely dangerous.
► Never use metal blades or metal-
reinforced line on this trimmer. Use
only the cutting attachments listed in
this manual, in combination with the
listed deflector. See Combinations of
Deflectors and Cutting Attachments,
25.
■ To reduce the risk of severe personal injuries
from unintentional starting:
► Never touch the cutting attachment
or mowing head with your hand, feet
or any other part of your body while
the battery is inserted, even when
the cutting attachment is not moving.
Keep bystanders at least 50 ft.
(15 m) away.
► Remove the battery before installing or
adjusting the bump guard.
► Switch off the motor and remove the
battery before inspecting a mowing
head, cutting attachment or deflec‐
tor. Clean dirt, grass, weeds and
other material from the mowing head
10
tection and keep bystanders
at least 50 ft. (15 m) away
from the work area. Any per‐
sons who must enter the
restricted area must also
wear proper eye protection.
and deflector at regular intervals, but
only after removing the battery.
■ A damaged or loose cutting attachment or
mowing head may vibrate, crack, break or
come off the trimmer, which may result in seri‐
ous or fatal injury.
► Make sure the cutting attachment and mow‐
ing head are properly tightened before
starting work.
► Check the tightness and condition of the
cutting attachment and mowing head before
starting work and any time trimming behav‐
ior changes during use. Always switch off
the motor, wait for the cutting attachment to
stop and remove the battery before inspect‐
ing the trimmer or its cutting attachment.
► If the mowing head or cutting attachment
loosens after being properly tightened, stop
work immediately and have the trimmer
inspected by your authorized STIHL servic‐
ing dealer.
► Never use a trimmer with a loose mowing
head or cutting attachment.
■ A cracked, damaged or worn out mowing head
may shatter at high speeds and cause serious
or fatal injury.
► Have a cracked, damaged or worn out
mowing head replaced immediately, even if
damage appears to be limited to superficial
cracks.
DANGER
■ To reduce risk of electrocution:
► Never operate this trimmer in the
vicinity of any wires or cables that
may be carrying electric current.
Look carefully for concealed wires
before starting work.
► Do not rely on the trimmer's insula‐
tion against electric shock, even
when holding the power tool by insu‐
lated gripping surfaces.
6
Battery Safety
6.1
Warnings and Instructions
WARNING
■ Use of unauthorized batteries can damage the
trimmer and result in fire, explosion and per‐
sonal injury and property damage.
► Use only genuine STIHL AK series batter‐
ies.
■ Use of STIHL AK series batteries for any pur‐
pose other than powering STIHL power tools
could be extremely dangerous.
6 Battery Safety
0458-832-8221-B