I don't remember ever seeing them on that engine, I'll have to look at it again next time. Its odd because it has two cylinders but is a 4 stroke engine so it has a 4 plugs on the distributer but two were molded over when it was made and the other two have wires, so the engine gives this putput putput sound as the two clinders fire one after the other then a slight delay for the exhaust strokes for both. It had a 6v electrical system that he converted to 12, put on a chevy alternator, 12v regulator and has the starter rebuilt for 12v.