Hitch mount assembly for snow blades or other accessories or implements for off-road vehicles such as all-terrain vehicles. The assembly includes a receiver for mounting to the vehicle chassis and an implement assembly readily removably coupled to the receiver. The configuration of the receiver and implement assembly allows for self-alignment during the mounting operation. A switching mechanism and actuator also can be used to pivot the working implement remotely. The mount assembly can be attached to the vehicle with a powered winch or manually.