You can start it with a 12v battery, you just need to disconnect it as soon as possible after it starts. I had a 6v vehicle that had a good engine but had not been started for over 20 years. After some prep the 6v engine would barely turn it over. Not enough to fire. We jumped it with a 12v battery multiple times to start it and get it in good enough running condition it started to fire using the 6v battery.


Dave from Northern Kentucky
My 54 3100