ENES
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Disengaging the gearbox:
Pull the gearbox freewheel lever (1) 
outwards to the stop and then raise.
Engaging the gearbox:
Guide the gearbox freewheel lever (1) 
downwards and then press inwards to the 
stop.
8.19 Level sensor (grass catcher box)
A continuous tone sounds if the grass 
catcher box is full. This signals that the 
grass catcher box needs to be emptied.
The time for the filled grass catcher box 
signal is adjusted by modifying the length 
of the (grass catcher box) level sensor.
This allows you to adapt filling of the grass 
catcher box to the characteristics of the 
clippings.
A shorter sensor generally causes later 
triggering of the signal (the grass catcher 
box is filled to a greater extent, ideal for 
very dry clippings).
The level sensor can be adjusted to 6 
notched positions.
In delivery condition, the level sensor 
(grass catcher box) is fully extended.
Adjusting the level sensor:
● Stop the engine. (Ö 13.3)
● Engage the parking brake. (Ö 8.14)
● Remove the grass catcher box. 
(Ö 13.10)
Extend or shorten the level sensor by 
moving the slide (1) of the (grass catcher 
box) level sensor in the direction of the 
arrows.
● Attach the grass catcher box. (Ö 13.10)
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. (Ö 8.14)
● Turn the ignition key to the "ignition on" 
position (Ö 8.1) – do not press any 
buttons and 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.
RT 6112 C, RT 6112 ZL, RT 6127 ZL:
All symbols are shown on the display for 
2 seconds. The operating hours can be 
read off for 5 seconds.
● Start the engine. (Ö 13.2)
Disengaging the mowing deck 
stops the continuous tone.
9. Electronics
The electronics in the models 
RT 6112 C, RT 6112 ZL, 
RT 6127 ZL also control the 
display. The display on these 
models therefore shows additional 
information.