English
Error
LEDs on the
battery
The battery jams
when inserted in
the battery com‐
partment.
Charging does
1 LED lights up
not start when
red.
the battery is
inserted into the
charger.
The grass has
not been cut
cleanly or the
lawn is yellow.
19.2
Troubleshooting Charger
If the battery is not being charged and the LED
on the charger flashes red: There is no contact
between the charger and battery.
► Remove the battery.
► Clean contacts on charger.
► Fit the battery.
► If the battery is still not being charged and the
LED on the charger flashes red: Do not use
the charger and contact your STIHL servicing
dealer.
Malfunction in charger.
20 Specifications
20.1
STIHL Lawn Mower
RMA 239.1 C
– Permissible battery: STIHL AK
– Weight with grass catcher, without battery:
15 kg
– Weight (m) with grass catcher box and
STIHL battery AK 30: 16 kg
– Maximum grass catcher box capacity: 40 l
– Cutting width: 37 cm
– Speed (n): 3350 rpm
– Electrical type of protection: IPX1
For information on run time, see www.stihl.com/
battery-life.
48
Cause
The area around the
cutting blade is
blocked.
The cutting blade is
blunt or worn.
The resistance on the
cutting 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 cutting blade is
blunt or worn.
The resistance on the
cutting blade is too
great.
20.2
– Minimum thickness a: 1,6 mm
– Maximum grinding limit b: 5 mm
– Sharpening angle c: 30°
20.3
– Battery technology: lithium-ion
– Voltage: 36 V
– Capacity in Ah: see rating label
– Energy content in Wh: see rating label
– Weight in kg: See rating label
20.4
– Rated voltage: See rating plate
– Frequency: see rating plate
– Rated power: see rating plate
– Charging current: See rating plate
Remedy
► Clean the lawn mower.
► Sharpen and balance the cutting blade.
► Increase the 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 cutting blade.
► Increase the cutting height.
► Mow shorter grass.
Blade
STIHL AK Battery
STIHL AL 101 Charger
20 Specifications
0478-131-9630-B