An actuating arm drive for a pivotably mounted actuating arm includes a pivotably mounted main lever, a force accumulator for exerting a force for supporting the opening and/or closing movement of the actuating arm drive on the main lever at a force introduction point, and a setting device for setting the force introduction point on the main lever. The force is introduced to the main lever at the force introduction point via a force introduction element which is loaded by the force accumulator via levers, and the setting device is designed to move the force introduction element along a bearing contour formed on the main lever. In each pivoting position of the main lever between the open and closed position of the actuating arm drive, and in each setting of the setting device, the loaded force introduction element is forced along the bearing contour in the same direction.