Operating The Lawn Mower - Stihl 459-481 Instruction Manual

13 Operating the Lawn Mower

► If the switch lever for wheel drive is stiff or
does not spring back to its idle position: Do not
use your mower and contact your STIHL serv‐
icing dealer for assistance.
There is a malfunction in the switch lever for
wheel drive.
Lever
► Pull out the activation key.
► Remove the battery.
► Move lever to
, and then to
► If the lever moves too freely: Do not use your
mower and contact your STIHL servicing
dealer for assistance.
The lever is defective.
Switching on the mower
► Insert the activation key.
► Fit the battery.
► Depress the lockout button with your right
hand and hold it there.
► Pull the switch lever for blade drive fully in
direction of the handle with your left hand and
hold it so that your thumb is wrapped around
the handle.
The blade rotates.
► If 3 LEDs flash red: Remove the activation key
and battery, and contact your STIHL servicing
dealer for assistance.
There is a malfunction in the mower.
► Release lockout button and switch lever for
blade drive.
The blade stops rotating after a brief delay.
► If the blade continues to rotate: Remove the
activation key and battery, and contact your
STIHL servicing dealer for assistance.
There is a malfunction in the mower.
Switching on wheel drive
► Insert the activation key.
► Fit the battery.
► Pull the switch lever for wheel drive fully in
direction of the handle and hold it so that your
thumb is wrapped around the handle.
The mower begins to move forwards.
► Release the switch lever for wheel drive.
The mower comes to a standstill.
► If the mower does not stop: Remove the bat‐
tery and contact your STIHL dealer for assis‐
tance.
There is a malfunction in the mower.
12.2 Checking the Blade
► Switch the lawn mower off, pull out the activa‐
tion key and remove the battery.
► Upend the lawn mower,
0478-131-9950-C
.
17.1.
► Measure the following:
– Thickness a
– Width b
– Sharpening angle c
► If the minimum thickness or minimum width
are fallen below: replace the blade,
► If the sharpening angle is not observed:
sharpen the blade,
► If anything is unclear: consult a STIHL special‐
ist dealer.
12.3 Testing the Battery
► Press button on battery.
The LEDs glow or flash.
► If the LEDs do not glow or flash: Do not use
the battery and contact your STIHL servicing
dealer.
There is a malfunction in the battery.
13 Operating the Lawn Mower
13.1 Holding and Guiding the Lawn
Mower
► Hold the handlebar with both hands so the
thumbs enclose the handlebar.
13.2 Adjusting the Cutting Height
Four cutting heights can be set:
– 28 mm = position 1
– 50 mm = position 2
– 68 mm = position 3
– 85 mm = position 4
English
21.2.
21.2.
37