Jim, it’s my kart Ric is asking about. Are you talking about the center rotor that bolts to the crank? So when this goes bad does it burn up your powerpak or does it just not start until the rpm is higher as with an external starter?
I might add that with an led test light at the coil power lead I get a faint on/off signal during cranking with the battery. When I crank with the external starter I get a very strong on/off signal.
John, yes I’m talking about the magnetic rotor on the crank, borrow one to try or put a screwdriver to the magnets to check magnetism, I bet that’s it. The external turns it over faster and will increase voltage so it starts occasionally. Happened to me, try it. chi wa wa