4 Safety Precautions
– The blade is burr-free.
– The blade is correctly balanced.
– The minimum thickness and minimum width of
the blade are not fallen below,
– The sharpening angle is observed,
WARNING
■ In unsafe condition, blade parts may come
loose and be expelled. This may result in seri‐
ous injury to people.
► Use an undamaged blade and attachments.
► Attach the blade correctly.
► Sharpen the blade correctly.
► If the minimum thickness or minimum width
is fallen below: replace the blade.
► Have the blade balanced by a STIHL spe‐
cialist dealer.
► If anything is unclear: consult a STIHL spe‐
cialist dealer.
4.6.3
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.
► If the battery is wet or damp: Allow the bat‐
tery to dry,
21.5.
► 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
0478-131-9979-A
seriously or fatally injured, and property may
be damaged.
► If the battery smells unusual or emits
21.2.
21.2.
► If the battery catches fire: Attempt to extin‐
4.7
■ In certain situations, the user may no longer
be able to concentrate on their work. This may
result in the user stumbling, falling and suffer‐
ing serious injury.
► Work calmly and methodically.
► If the light and visibility conditions are poor:
► Use the lawn mower on your own.
► Watch out for obstacles.
► Do not tilt the lawn mower.
► Work standing on the ground and keep your
► If you start feeling fatigue: Take a break.
► When mowing a slope: Mow across the
► Do not work on slopes with a gradient
■ Hard objects that hit the rotating blade can
damage the lawn mower.
► If a hard object hits the rotating blade,
► If the lawn mower is damaged: Contact a
■ The user may be cut by the rotating blade.
This may result in serious injury to the user.
■ If the lawn mower starts behaving differently or
in an unusual way during operation, the lawn
mower may be in an unsafe condition. This
may result in serious injury to people and
damage to property.
► Stop working, remove the batteries and
■ The lawn mower may cause vibrations in oper‐
ation.
► Wear protective gloves.
► Take breaks.
smoke: do not use the battery and keep it
away from combustible substances.
guish the battery with a fire extinguisher or
water.
Working
WARNING
Do not use the lawn mower.
balance.
slope.
greater than 25° (46.6%).
switch off the lawn mower, remove the bat‐
teries and check the lawn mower for dam‐
age.
STIHL authorized dealer.
► Do not touch the rotating blade.
► If the blade is blocked by an object:
Switch the lawn mower off and
remove the batteries. Only then
remove the object.
contact a STIHL authorized dealer.
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