Abstract: A motorless harvester thresher is coupled with a multi-purpose vehicle by means of a coupling rod and a coupling linkage extended between the vehicle and the thresher and pivotally mounted to a lateral side of the vehicle and to a laterial side of the thresher.A driven front axle of the vehicle supporting the front wheels thereof coupled with a non-steerable front axle of the front wheels of the harvester thresher by means of the coupling rod connected to a clutch which can be engaged to or disengaged from the coupling rod so as to ensure the axial alignment of front axes of the vehicle and the machine so as to provide for a stable lateral position of the thresher relative to the vehicle in the traveling movement thereof.