In Reply to: Electrical posted by Daniel Stackpoole on November 26, 2019 at 06:09:00:
Do not connect a 6 volt battery and a 12 volt battery the way you would jump start two 12 volt vehicles. Just use the 12 volt jumper cables to run the starter motor. This takes the cranking load off the 6 volt battery, so sparks should be good. Make sure tractor is in neutral, turn ignition on, touch one jumper clamp to tractor frame, touch other jumper clamp to the electrical connection on the starter motor.