Stihl RMA 248.3 T Instruction Manual page 53

19 Troubleshooting
Fault LEDs on the
battery
Self-propulsion is
not working.
The lawn mower 3 LEDs illumi‐
stops during ope‐ nate red.
ration.
The lawn mower
vibrates excessi‐
vely during ope‐
ration.
The lawn mower
operating time is
too short.
The battery gets
stuck when fitting
it into the battery
compartment.
Charging fails to 1 LED illumina‐
start after fitting tes red.
the battery into
the charger.
The grass has
not been cut
cleanly or the
lawn is yellow.
0478-131-9605-B
Cause
There is a fault in the
self-propulsion
mechanism.
The lawn mower is
too warm.
The blade is blocked. ► Remove the battery.
There is an electrical
fault.
The blade fastening
screw is loose.
The blade is not cor‐
rectly balanced.
The battery is not fully
charged.
The battery service
life has been excee‐
ded.
The area around the
blade is blocked.
The blade is blunt or
worn.
The resistance at the
blade is too great.
The guides or electri‐
cal contacts in the
battery compartment
are dirty.
The battery is too
warm or too cold.
The blade is blunt or
worn.
The resistance at the
blade is too great.
Remedy
► Consult a STIHL specialist dealer.
► Remove the battery.
► Allow the lawn mower to cool down.
► Clean the lawn mower.
► Do not switch the lawn mower on too fre‐
quently within a short time.
► If working with self-propulsion engaged:
disengage self-propulsion.
► If working with self-propulsion disenga‐
ged: go forwards slower.
► Set a higher cutting height.
► Mow shorter grass.
► Clean the lawn mower.
► Remove the battery and fit it again.
► Switch the lawn mower on.
► Tighten the screw.
► Sharpen and balance the blade.
► Charge the battery fully as described in
the instruction manual for
STIHL AL 101, 301, 500 chargers.
► Replace the battery.
► Clean the lawn mower.
► Sharpen and balance the blade.
► If working with self-propulsion engaged:
disengage self-propulsion.
► If working with self-propulsion disenga‐
ged: go forwards slower.
► Set a higher cutting height.
► Mow shorter grass.
► Clean the lawn mower.
► Remove the battery.
► Allow the battery to cool down or warm
up.
► Sharpen and balance the blade.
► If working with self-propulsion engaged:
disengage self-propulsion.
English
53