Abstract: A hay-making machine having rakes supported on a frame for rotation about a generally vertical axis. The tines of the rotary rake are secured on tine carrier arms which extend outwardly from an axis of rotation for the rotary rake and are rotatable with the tine carrier arm about the longitudinal axis therefor. A control lever is mounted on the inner end of the tine carrier arms. A cam roller is mounted on the control lever and engages a cam pathway mounted on the frame of the machine. The tines on the tine carrier arm are secured to a tine carrier part which is pivotal relative to the tine carrier arm about an axis perpendicular to the longitudinal axis of the tine carrier arm. The pivoting action of the tine carrier part facilitates a reversal of the tines to further facilitate a movement of the rotary rake in an opposite direction of rotation about the generally vertical axis of rotation. A locking mechanism is provided to secure the tine carrier part in two positions spaced approximately 180.degree.