What year / model do you have? There were different designs for the 7.5 B-O-M. Early ones had a curved leg with the pumps up high. Later ones had a straight leg with the pumps down low. And then there were the low profile motors that I avoid like… well… Covid.
IIRC, in all cases the cooling pump had a small bleeder hole in it that led to the bailer impeller to keep the bailer wet during use. But you should probably keep the inlet capped with the rubber cap when not in use. You don’t have to submerge the bailer when starting.
Most Scotts from the ’50’s used WICO ignition. The condensers, if they have the fiber insulator, are notorious for leakage current. At a minimum, test them.
T
