English
Fault
LEDs on the ope‐
rating unit
Self-propul‐
sion is not
working.
The lawn
Fault indicator fla‐
mower stops
shes red.
during opera‐
tion.
Fault indicator fla‐
shes red.
The lawn
mower vibra‐
tes excessi‐
vely during
operation.
The lawn
mower opera‐
ting time is
too short.
54
LEDs on the
Cause
battery
Batteries of lower
power than the
STIHL AP 300
are used.
Self-propulsion is
disengaged.
There is a fault in
the self-propul‐
sion mechanism.
3 LEDs illu‐
The lawn mower
minate red.
is too warm.
The blade is
blocked.
There is an elect‐
rical fault.
The self-propul‐
sion and the
blade disengage
in the event of
overload when
working on steep
slopes.
The blade fasten‐
ing screw is
loose.
The blade is not
correctly balan‐
ced.
One of the batte‐
ries is not fully
charged.
The battery ser‐
vice life has been
exceeded.
The area around
the blade is
blocked.
The blade is blunt
or worn.
The resistance at
the blade is too
great.
20 Troubleshooting
Remedy
Use more powerful STIHL AP
batteries.
Setting the self-propulsion speed.
► Remove the batteries and fit
them again.
► Engage self-propulsion.
► If the self-propulsion fault per‐
sists: consult a STIHL specia‐
list dealer.
► Remove the batteries.
► Allow the lawn mower to cool
down.
► Clean the lawn mower.
► Remove the batteries.
► Clean the lawn mower.
► Remove the batteries and fit
them again.
► Switch the lawn mower on.
► Do not mow on steep slopes.
► Release the control bar for
self-propulsion.
► Place the lawn mower on a
level surface.
► Activate the blade.
► Engage self-propulsion.
Tighten the screw.
Sharpen and balance the blade.
Charge batteries.
Replace the battery.
Clean the lawn mower.
Sharpen and balance the blade.
► If working with self-propulsion
engaged: disengage self-pro‐
pulsion.
► If working with self-propulsion
disengaged: go forwards slo‐
wer.
► Set a higher cutting height.
0478-131-9676-A