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● Attach the grass catcher box. (
9. Electronics
In order to ensure safe operation, the ride-
on mower is equipped with electronics
which check all the safety devices before
each starting procedure and when the
mower is running.
9.1 Self-diagnosis when starting
Before the engine is started, the
electronics perform self-diagnosis. This
checks switches, wiring, etc. for correct
functioning.
Activating self-diagnosis:
● Sit on the driver's seat.
● Release the parking brake. (
● Turn the ignition key to the "ignition on"
position (
8.1) – do not press any
switches or actuate any pedals.
Self-diagnosis without faults:
A short beep sounds – the electronics are
activated and the ride-on mower is ready
to start.
● Start the engine. (
12.2)
Self-diagnosis with faults:
A continuous beep or three successive
beeps sound.
A continuous beep signals a fault in the
electronics or a battery connected with the
incorrect polarity.
● Turn the ignition key to the "engine off"
position. (
8.1)
0478 193 9905 B - EN
12.10)
● Check the polarity of the battery
connections and connect the wiring
correctly if necessary. (
● Repeat self-diagnosis.
If the continuous beep continues to
sound even after the battery is correctly
connected, an electronic fault is
present. Consult your specialist dealer;
STIHL recommends STIHL specialist
dealers.
Three successive beeps signal a fault in
the electrics (short circuit) or in the seat
switch. It is not possible to start the engine.
● Turn the ignition key to the "engine off"
position. (
8.1)
● Have a detailed diagnosis carried out
by a specialist dealer. STIHL
recommends STIHL specialist dealers.
8.10)
9.2 Ride-on mower faults during
operation
The electronics monitor the safe condition
during operation. Three successive beeps
sound if there is a fault in the electrics
(short circuit, loose connectors, broken
wire).
The engine is stopped.
Behaviour:
● Turn the ignition key to the "engine off"
position. (
8.1)
● Activate self-diagnosis. (
If the fault cannot be rectified,
detailed diagnosis is necessary.
Consult your specialist dealer;
STIHL recommends STIHL
specialist dealers.
9.3 Electronics faults
14.19)
In rare cases, electronics faults may occur
during operation of the mower. A
continuous beep sounds and the engine is
stopped.
Behaviour:
● Turn the ignition key to the "engine off"
position. (
● Activate self-diagnosis. (
● Restart the engine. (
If the fault cannot be rectified,
detailed diagnosis is necessary.
Consult your specialist dealer;
STIHL recommends STIHL
specialist dealers.
10. Notes on working with
the machine
Warning:
Risk of injury.
Before each use, observe all
information regarding safe
operation of the machine.
Working on slopes requires special
concentration and care.
Note
Check the mowing deck for correct
installation position before starting
work.
Select a flat, even area for initial
9.1)
use of your machine and mow in
straight and slightly overlapping
strips for practising purposes.
Grass should always be mowed
when dry.
8.1)
9.1)
12.2)
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