Abstract: A harvesting platform having a frame and a cutterbar supported by the frame, a reciprocal knife that moves relative to the cutterbar, a drive motor having a rotary input and a linearly reciprocating output shaft. The output shaft is coupled to the knife for reciprocating the knife and a one piece mounting bracket is coupled to the cutterbar and the drive motor to establish the position of the drive motor relative to the cutterbar. The bracket has machined surfaces engaging the drive motor and the cutterbar to establish the relative positions of the drive motor and the cutterbar within the machining tolerances. This provides proper alignment of the drive motor output with the cutterbar that is necessary for an in-line drive motor.