A shearable drive coupling assembly includes an adapter having a top end with a drive shaft well extending downwardly therein. A plurality of spindle splines extends outwardly from an outer surface of the adapter and a plurality of shaft splines extends inwardly from an inside surface of the adaptor. The plurality of spindle splines engage a receiver of an article of powered equipment. A drive shaft of a drive motor engages the shaft splines so that the adapter is coupled to the drive shaft and transfers a rotational torque between the drive shaft and the receiver. The plurality of spindle splines or the plurality of shaft splines shears away from the adapter to decouple the drive shaft from the receiver when the receiver is exposed to a trigger counter-rotational force to protect the receiver and the drive shaft from damage.
