Stihl RM 448 VC, Instruction Manual, Page: 31 / 492

► Measure the following:
–
Thickness a
–
Width b
–
Sharpening angle c
► If the minimum thickness or minimum width is
fallen below: replace the blade, 19.2.
► If the sharpening angle is not correct: sharpen
the blade, 19.2.
► If anything is unclear: consult a STIHL special‐
ist dealer.
11 Operating the Lawn Mower
11.1 Holding and Guiding the Lawn
Mower
► Hold the handlebar with both hands so the
thumbs enclose the handlebar.
11.2 Setting the Cutting Height
Six cutting heights can be set:
–
25 mm = position 1
–
30 mm = position 2
–
40 mm = position 3
–
50 mm = position 4
–
60 mm = position 5
–
75 mm = position 6
The positions are indicated on the lawn mower.
Setting the cutting height
► Hold the lawn mower at handle (1).
► Press and hold lever (2).
► Move the lawn mower to the desired position
by raising and lowering the lever.
The current cutting height can be read off at
cutting height indicator (3) by means of mark‐
ing (4).
► Release lever (2).
The lawn mower engages.
11.3 Switching the Drive On and Off
11.3.1 Engaging Self-propulsion
NOTICE
► To avoid damage to the machine, only
actuate the Vario drive lever when the
engine is running.
► Place the lawn mower on a level surface.
► Start the engine.
► Pull control bar for self-propulsion (1) fully in
the direction of handlebar (2) and hold so the
thumb encloses the handlebar.
The lawn mower starts moving.
Increasing the driving speed:
► Push Vario drive lever (3) forwards towards
when driving.
Reducing the driving speed:
► Push Vario drive lever (3) rearwards towards
when driving.
11 Operating the Lawn Mower English
0478-111-9904-A 31