I just purchased an International 240 with the 123 engine in it and a 12 volt conversion. Its cold here in NY and the only way it likes to start is with what the last owner called a hot spark. It is a black button he presses while starting the tractor. He described it to me as supplying a bigger hotter spark to the chamber as the power drops down to about 4 amps while starting. without the "hot spark" it doesn't even fire but once you hit the button it usually starts right up. He told me if you use it a lot it will burn up the points. Does anyone know what this "hot start" actually is?