Shed-forming device comprising a number of drive levers (4, 33) and a number of transmission mechanisms (2, 34), wherein each transmission mechanism (2, 34) can drive a heald frame (3) and can be driven by a driving device (14) via a drive lever (4, 33), wherein the transmission mechanism (2, 34) and the drive lever (4, 33) are coupled in a specific coupling position by means of a connection (5), and wherein at least one indication (22, 23, 27, 28, 46) for a reference coupling position is provided on at least one drive lever (4, 33). Method for producing and method for setting a shed-forming device (1) for a weaving machine.