I acquired a Master Generator, Type MM7, 700 watt gen, with Briggs 8FB 108522 engine. The gen has a large button and two wing nut terminals on the outlet box. I think these might be a starter button and 6 volt DC connections. Can anyone confirm that is what these are and briefly tell me how they work. When running I get 115 volt AC out the gen but nothing on the wing nut terminals. I am afraid to push the button when running without knowing what I am doing. Any help is appreciated or a link to a manual. Thanks.