A multi-output transmission assembly includes first and second gears rotatable in opposite directions, an output shaft, first and second collars slidably coupled to the output shaft, and an actuator coupled to the first and second collars. The first collar is rotated by the first gear in a first direction. The second collar is rotated by the second gear in a second direction. The actuator moves the first and second collars along the output shaft. With the actuator in a neutral position, the first and second collars are disengaged from the output shaft and the output shaft does not rotate. With the actuator in a first position, the first collar engages the output shaft and the output shaft rotates in the first direction. With the actuator in a second position, the second collar engages the output shaft and the output shaft rotates in the second direction.