A towed implement (10) for use with a work machine includes a main frame (12) having a pivot hole (32) and at least one hitch mounting hole (34). A hitch frame (18) is coupled with the main frame (12) and includes a towed end (22). A height adjustment arrangement (20, 70, 80) is associated with the main frame (12) and the hitch frame (18) for adjusting a height of the hitch frame (18). The implement (10) is characterized in that the hitch frame (18) is pivotable relative to the main frame (12) about a pivot axis (A) at the pivot hole (32). The hitch frame (18) includes a chamber (40, 90) having an interior periphery (42) with a plurality of notches (44) spaced about the interior periphery (42). The height adjustment arrangement (20, 70, 80) includes a stop key (46) positioned within the chamber (40, 90) of the hitch frame (18). The stop key (46) has a hole (48) arranged for receiving a fastener associated with the at least one hitch mounting hole (34), a cam surface (52), and at least one tooth (54) extending from the cam surface (52). Each tooth (54) is received in a corresponding notch (44) of the interior periphery (42).
