When the Motor Company incorporated in 1907, Arthur acted as secretary and general sales manager. He traveled the world recruiting new dealers and establishing the dealer network. He knew the importance of a strong dealer network, but also understood the importance of having skilled mechanics to take care of the customer and thus he also oversaw the development of the Harley-Davidson Service School.
Away from his duties with the Motor Company Arthur Davidson was interested in youth activities and the outdoors. He was very involved with the Milwaukee Boys’ Club, the Y.M.C.A, the Izaak Walton League, and the Boy Scouts of America. The Boy Scouts awarded him their highest award for distinguished service.