The machine (1) has a machine frame (3) comprising an undercarriage (5) with two training wheels (6) and a device-sided control unit (21) i.e. job calculator (24), that receives and processes generated input signal over an input channel based on reverse movement (R) of a tractor (8). The input signals trigger a control instruction over a logic function within the device-sided control unit as output signals for an actuator (22). A racking rotor (2) is transferred from a ground-level working position into a bottomless distant headland position or a transport position.
