ADAPTER APPARATUS FOR A TRAILER JACK

An adapter apparatus for connecting a rotary drive to a trailer jack includes an inline gear reducer has an input shaft and an output shaft which are aligned with each other along a rotational axis and face opposite directions from each other. The inline gear reducer is configured to urge the output shaft to rotate at a reduced rotational speed compared to an input rotational speed of the input shaft. A handle is coupled to and extends radially away from the inline gear reducer. The handle includes a grip adjacent to a distal end of the handle with respect to the inline gear reducer. A connector is removably couplable to the output shaft. The connector defines a reducer opening and a jack opening on opposite sides of the connector from each other. The reducer opening receives the output shaft of the inline gear reducer when the connector is coupled to the output shaft. The jack opening has a size and shape such that the jack opening is configured to receive a crank shaft of the trailer jack, and the connector is configured to coupled to the crank shaft.