The invention relates to a working element (30) mounted on an agricultural machine having a deformable connecting structure (31) comprising upper arms (17) and lower arms (18), said connecting structure comprising a system for adjusting the down-pressure (34； 134) having a movable mechanism (35； 135) and a reference member (36； 136), the mechanism comprising a lever (37； 137) and a resilient member (38； 138) that are articulated about a first axis (61), the mechanism allowing: - an engaged state in which it is held against the reference member in a working position, subjecting the working element to a down-pressure； - an adjusting state in which it is movable about a lower axis (60) with respect to the reference member, the mechanism comprising a second axis (62) about which the lever is pivotable in an intermediate state.
