Got my wife's grandpas 1941 farmall h going. He had a 12 volt battery on a 6 volt system. Replaced the starter with one of his M's he has. Put new plugs in. Cleaned the cap and points. Put the coil off the M and replace the bad one on the H. Started up and drove it around some. Need to replace the fluids. It was sitting inside for 2 years. Probably change the oil at least?
I feel that I did pretty good working on it for an old tractor newbie.