The invention relates to a device for hitching and lifting an agricultural tool, comprising a frame (1) intended to be fastened to the agricultural machine, at least one first arm (2) that is articulated on the frame and comprises a first tool hitching means (8) at one of its ends, at least one first jack (4), of which one of the elements, cylinder or rod, is connected to the frame while the other element, rod or cylinder, is connected to the arm, said jack making it possible to move the arm such that the extent of the travel of the jack allows the end of the arm bearing the hitching means to successively pass through a first position, referred to as the "minimum low position", a second position, referred to as the "maximum high position", and a third position, referred to as "retracted", of the supply means (9, 10) of the jack, means (C) for detecting the position of the end of the arm that are able to deactivate the supply means of the jack when the end of the arm has reached the second position, and a bypass controller (R) for bypassing the controller of the detection means that is able to reactivate the supply means of the jack. A further subject of the invention is a method for controlling such a device.Linvention se rapporte à un dispositif dattelage et de relevage doutil agricole, comprenant un châssis (1) destiné à être fixé sur lengin agricole, au moins un premier bras (2) articulé sur le châssis et comportant en lune de ses extrémités un premier moyen dattelage (8) de loutil,au moins un premier vérin (4) dont lun des éléments, cylindre ou tige, est relié au châssis tandis que lautre élément, tige ou cylindre, est relié au bras, ledit vérin permettant dassurer le mouvement du bras de sorte que létendue de la course du vérin permet à lextrémité du bras portant le moyen dattelage, de balayer successivement une première position dite « position basse minimale », une seconde position dite « position haute maximale »et une troisième position dite « escamotée »,
