#$%^&*AU2019200601A120190815.pdf#####ABSTRACT: A crop harvesting header for a combine harvester is disclosed. The 5 header includes a man frame structure and a mounting assembly comprising left and right float elements each for applying controlled left and right lift forces and arranged to allow upward floating of each end of the header in response to ground contact. The header includes a cutter bar arranged to move through the crop in a cutting action for cutting the crop as the header is moved, and a ground 10 engaging element arranged so that the cutter bar is supported adjacent the ground for cutting crop close to the ground. At least one sensor detects the angle of tilt of the header and a control system operates to reduce the left lift force when the left end is raised and to reduce the right lift force when the right end is raised. A combine harvester is also disclosed. 15 FIGURE 6 for publication6/6 Iq~ cn <;00 J co CC', (D0 851