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tion properly or safety devices may be ren‐
dered inoperative. This can result in serious
injuries.
► Work only with an undamaged deflector.
► Work with a correctly installed line limiter
blade.
► If you have any queries: Contact your
STIHL servicing dealer.
4.6.3
Mowing head
The mowing head is in a safe condition if the fol‐
lowing points are observed:
– The mowing head is not damaged.
– The mowing head is not jammed.
– The mowing head is attached correctly.
– The mowing lines are properly installed.
– If a Polycut mowing head with polymer blades
is used:
– The polymer blades are free of damage and
tears.
– The polymer blades are properly mounted.
– The wear limits are not exceeded.
WARNING
■ If they are in an unsafe condition, parts of the
mowing head, mowing lines or polymer blades
may come off and be ejected at high speed.
People may suffer serious injuries as a result.
► Work only with an undamaged mowing
head.
► If a PolyCut mowing head with polymer
blades is used: Never work with damaged
polymer blades.
► Never use metal objects in place of the
nylon mowing lines or polymer blades.
► Note and comply with the wear limits.
► If you are unsure: Contact a STIHL author‐
ized dealer.
4.6.4
Battery
The battery is in a safe condition if the following
points are observed:
– Battery is undamaged.
– The battery is clean and dry.
– Battery functions properly and has not been
modified.
WARNING
■ A battery that is not in a safe condition cannot
operate safely. Persons may be seriously
injured.
► Never work with a damaged battery.
► Never attempt to charge a damaged or
defective battery.
► If the battery is dirty: Clean the battery.
32
► If the battery is wet or damp: Allow the bat‐
tery to dry,
20.6.
► Never attempt to modify the battery.
► Never insert objects in the battery's open‐
ings.
► Never bridge the battery's contacts with
metallic objects (short circuit).
► Do not open the battery.
► Replace worn or damaged labels.
■ Fluid may leak from a damaged battery. If that
liquid comes into contact with the skin or eyes,
the skin or eyes may be irritated.
► Avoid contact with the liquid.
► If skin contact occurs: Wash affected areas
of skin with plenty of water and soap.
► In the event of contact with eyes: Rinse
eyes with plenty of water for at least
15 minutes and consult a doctor.
■ A damaged or defective battery may smell
unusual, emit smoke or burn. Persons may be
seriously or fatally injured, and property may
be damaged.
► If the battery smells unusual or emits
smoke: do not use the battery and keep it
away from combustible substances.
► If the battery catches fire: Attempt to extin‐
guish the battery with a fire extinguisher or
water.
4.6.5
Charger
The charger is in a safe condition if the following
points are observed:
– Charger is undamaged.
– Charger is clean and dry.
WARNING
■ If components do not comply with safety
requirements, they will no longer function
properly and safety devices may be rendered
inoperative. This can result in serious or fatal
injuries.
► Do not use a damaged charger.
► If the charger is dirty or wet: Clean the
charger and allow it to dry.
► Never attempt to modify the charger.
► Never insert objects in the charger's open‐
ings.
► Never bridge the charger's contacts with
metallic objects (short circuit).
► Do not open the charger.
4 Safety Precautions
0458-063-9601-A