Stihl RMA 448 VC User Manual

Fault LEDs on the
battery
Cause Remedy
The lawn mower
stops during ope‐
ration.
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.
► Clean the lawn mower.
► Do not switch the lawn mower on too fre‐
quently within a short time.
► If working with self-propulsion engaged:
switch off self-propulsion.
► If working with self-propulsion disenga‐
ged: go forwards slower.
► Set a higher cutting height.
► Mow shorter grass.
The blade is blocked. ► Pull out the activation key.
► Remove the battery.
► Clean the lawn mower.
There is an electrical
fault.
► Remove the battery and fit it again.
► Switch the lawn mower on.
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.
► If working with self-propulsion engaged:
switch off self-propulsion.
► If working with self-propulsion disenga‐
ged: go forwards slower.
► 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.
► If working with self-propulsion engaged:
switch off self-propulsion.
► If working with self-propulsion disenga‐
ged: go forwards slower.
► Set a higher cutting height.
21 Troubleshooting English
0478-131-9948-D 45

Stihl RMA 448 VC Specifications

General

Type	Walk behind lawn mower
Cutting width	460 mm
Grass catcher	Yes
Product color	Black, Grey, Orange
Uncertainty K	0.9 m/s²
Number of wheels	4 wheel(s)
Rotational speed	3150 RPM
Maximum lawn area	400 m²
Mulching function	-
Sound power level	94 dB
Handle(s) features	Foldable
Vibration emission	1.8 m/s²
Sound pressure level	80 dB
Maximum cutting height	75 mm
Minimum cutting height	25 mm
Grass collecting volume	55 L
Power source	Battery
Power consumption (typical)	1050 W

Weight and Dimensions

Width	500 mm
Height	1130 mm
Weight	24000 g