An agricultural working machine is provided in the form of a soil tillage machine designed as a soil tiller. A shaft is provided with at least one tool, the rotation axis of which extends in operation at an angle to the direction of travel and at least substantially parallel to the ground. A housing is arranged on a frame of the working machine at least in sections above the shaft, and has an inner wall delimiting a channel between the shaft and the housing. The housing has a front and a rear, movable housing part with respect to the direction of travel, with respective inner wall parts which each extend along the shaft and which each have at least two adjustable, different operating positions in which the respective inner wall parts of the housing parts are positioned differently to the shaft.

A snow tooth for a snow tiller for preparing the snowpack of ski slopes; the snow tooth comprising a first projection having a first height and a second projection having a second height, the first height and the second height; the snow tooth being shaped so as to be connected to a rotating shaft and have, in use, a main direction of rotation. The first projection is arranged along the snow tooth so that, in use, the first projection sinks into the snowpack before the second projection in particular when, in use, the snow tooth is attached to a shaft of the snow tiller and the shaft rotates in the main direction of rotation.