► If anything is unclear: consult a STIHL special‐
ist dealer.
20 Repairing
20.1 Repairing the Mower and Bat‐
tery
The mower, blade and battery cannot be
repaired by the user.
► If the mower or the blade is damaged: Do not
use your mower and contact your STIHL serv‐
icing dealer for assistance.
► If the battery has a malfunction or is damaged:
Replace the battery.
► If safety labels are illegible or damaged: Have
the labels replaced by a STIHL servicing
dealer.
21 Troubleshooting
21.1 Remedying Lawn Mower or Battery Faults
Fault LEDs on the
battery
Cause Remedy
The lawn mower
does not start
when switched
on.
1 LED flashes
green.
The battery charge
state is too low.
► Charge the battery.
1 LED illumina‐
tes red.
The battery is too
warm or too cold.
► Pull out the activation key.
► Remove the battery.
► Allow the battery to cool down or warm
up.
3 LEDs flash
red.
There is a fault in the
lawn mower.
► Pull out the activation key.
► Remove the battery.
► Clean the electric contacts in the battery
compartment.
► Fit the battery.
► Switch the lawn mower on.
► If 3 LEDs still flash red: do not use the
lawn mower and consult a STIHL spe‐
cialist dealer.
3 LEDs illumi‐
nate red.
The lawn mower is
too warm.
► Pull out the activation key.
► Remove the battery.
► Allow the lawn mower to cool down.
4 LEDs flash
red.
There is a fault in the
battery.
► Remove the battery and fit it again.
► Switch the lawn mower on.
► If 4 LEDs still flash red: do not use the
battery and consult a STIHL specialist
dealer.
The electrical connec‐
tion between the lawn
mower and battery
has been interrupted.
► Pull out the activation key.
► Remove the battery.
► Clean the electric contacts in the battery
compartment.
► Insert the activation key.
► Fit the battery.
The lawn mower or
battery is damp.
► Pull out the activation key.
► Remove the battery.
► Clean the lawn mower.
► Allow the lawn mower or battery to dry.
The resistance at the
blade is too great.
► Set a higher cutting height.
► Switch the lawn mower on in lower
grass.
The area around the
blade is blocked.
► Clean the lawn mower.
Self-propulsion is
not working.
There is a fault in the
self-propulsion
mechanism.
► Consult a STIHL specialist dealer.
English 20 Repairing
44 0478-131-9948-D
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