Fault
LEDs on the
battery
Cause
Remedy
The lawn mower
vibrates excessi‐
vely during ope‐
ration.
The blade fastening
screw is loose.
► Tighten the screw.
The blade is not cor‐
rectly balanced.
► Sharpen and balance the blade.
The lawn mower
operating time is
too short.
The battery is not fully
charged.
► Fully charge the battery.
The battery service
life has been excee‐
ded.
► Replace the battery.
The area around the
blade is blocked.
► Clean the lawn mower.
The blade is blunt or
worn.
► Sharpen and balance the blade.
The resistance at the
blade is too great.
► Set a higher cutting height.
► Mow shorter grass.
The battery gets
stuck when fitting
it into the battery
compartment.
The guides or electric
contacts in the battery
compartment are
dirty.
► Clean the lawn mower.
Charging fails to
start after fitting
the battery into
the charger.
1 LED illumina‐
tes red.
The battery is too
warm or too cold.
► Leave the battery inserted in the char‐
ger.
Charging starts automatically as soon as
the permissible temperature range is
reached.
The grass has
not been cut
cleanly or the
lawn is yellow.
The blade is blunt or
worn.
► Sharpen and balance the blade.
The resistance at the
blade is too great.
► Set a higher cutting height.
► Mow shorter grass.
20 Specifications
20.1
STIHL RMA 253.0 Lawn
Mower
–
Permissible battery: STIHL AP
–
Weight without battery: 22.5 kg
–
Maximum grass catcher box capacity: 55 l
–
Cutting width: 51 cm
–
Speed: 3,200 rpm
For information on the battery life see
20.2
Blade
–
Minimum thickness a: 1.6 mm
–
Minimum width b: 55 mm
–
Sharpening angle c: 30°
English
20 Specifications
38
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