My very first tractor was a 1941 Farmall dual fuel. They were made to be used during wartime when distillate (not diesel) was more readily available than regular leaded gas.
It had crank close radiator shutters and a hood on the Marvel-Schiebler carb you could close both to get the engine hot enough to run distillate and it had 2 fuel tanks as well.
Tried it one time using kerosene and that was enough for me. The unburned kero coming out the exhaust stack coated everything including me with black oily crud.
Tractor is long time gone. Should have kept it for a collectible but I own enough collectable junk as it is.
Had spark plugs and a magneto as well.