40/4/3: Unidentified marine engine.
As I can tell, this is a marine engine. There are no serial numbers or identification at all except on top of the cylinder at 9 o'clock and 3 o'clock, where the marking "A1" is engraved. I would like to find out who made it, year made and any other information on this engine so I can restore it. Charles Barbian, 9306 Royal Oak Drive, Alexandrea, KY 41001; (859) 635-3588.