Stihl RMA 448 VC User Manual

► Press lever (1) downwards with the left hand
and hold.
► Hold the lawn mower at transport handle (2)
with the right hand and upend.
18.2 Cleaning the Lawn Mower
► Switch the lawn mower off, pull out the activa‐
tion key and remove the battery.
► Clean the lawn mower with a damp cloth.
► Clean the discharge chute with a soft brush or
a damp cloth.
► Remove any foreign bodies from the battery
compartment and clean the battery compart‐
ment with a damp cloth.
► Clean the electric contacts in the battery com‐
partment with a paintbrush or a soft brush.
► Clean the ventilation slots with a paintbrush.
► Upend the lawn mower.
► Clean the area around the blade and the blade
with a stick, a soft brush or a damp cloth.
18.3 Cleaning the Battery
► Clean the battery with a damp cloth.
19 Maintenance
19.1 Removing and Attaching the
Blade
19.1.1 Removing the Blade
► Switch the lawn mower off, pull out the activa‐
tion key and remove the battery.
► Upend the lawn mower.
► Block blade (1) using a piece of wood (2).
► Unscrew screw (3) in the direction of the arrow
and remove together with washer (4).
► Remove blade (1).
► Discard screw (3) and washer (4).
Use a new screw and washer to attach
blade (1).
19.1.2 Attaching the Blade
► Switch the lawn mower off, pull out the activa‐
tion key and remove the battery.
► Upend the lawn mower.
► Lay new washer (1) on new screw (2) with the
convex side facing outwards.
► Apply Loctite 243 thread locker to the thread
of screw (2).
► Position blade (3) so that the raised areas on
contact area (4) engage in notches (5).
► Screw in screw (2) together with washer (1).
► Block blade (1) using a piece of wood (2).
► Tighten screw (3) to 65 Nm.
19.2 Sharpening and Balancing the
Blade
Sharpening and balancing the blade correctly
requires a lot of practice.
STIHL recommends having the blade sharpened
and balanced by a STIHL specialist dealer.
WARNING
■ The cutting edges of the blade are sharp. This
may result in the user cutting themselves.
► Wear work gloves made from resistant
material.
► Switch the lawn mower off, pull out the activa‐
tion key and remove the battery.
► Upend the lawn mower.
► Remove the blade.
► Sharpen the blade. Observe the sharpening
angle and cool the blade, 22.2.
Bluing of the blade during sharpening is not
permitted.
► Attach the blade.
19 Maintenance English
0478-131-9948-D 43

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