An agricultural distribution machine (1) with a storage container (2) supported on a frame (4), with at least one metering member (8) associated with the storage container, which supplies the material in the storage container in adjustable amounts to delivery elements (6) Feeds lines (7), wherein the at least one metering device is adjustable by means of a setting unit, with at least one dosing organ associated bottom flap, the distance to at least one metering via a Bodenklappeneinstelleinheit is adjustable, with at least one calibration (9), which below the at least one Dosing arranged and in a working position and a calibration and / or maintenance position (23) can be brought, and / or with the at least one dosing associated Abdrehklappe, which in a working position and a calibration and / or maintenance position by means of a Abdrehklappeneinstelleinheit is gbar, wherein at least one Getriebeeinstelleinheit, Bodenklappeneinstelleinheit and / or the Abdrehklappeneinstelleinheit in an operating center (14) are combined and the operating center on one side of the distributor, preferably on the left in the working direction (1) side of the reservoir. In order to provide an arrangement which is suitable for securing the cover (15) of the setting units and at the same time settings of the setting units suitable for the distribution operation, it is provided that the operating center (14) can be covered by a cover (15) and the cover is calibrated - And / or maintenance position (18) and a working position (17) can be brought, wherein the inner contour of the cover is shaped such that the cover exclusively in its working position (17) can be brought, if all in the control center (14) combined adjustment units in a suitable working position.
