I left the key on and killed my 6v battery. I bought a new 6v battery at NAPA, attached it via jumper cables to the battery in the tractor and tried to start. The starter just clicked which sounded to me like the new battery was discharged. This is a totally valid way to start the tractor assuming the battery I'm trying to use to jump start the tractor is good, right? I don't have the original starter I don't believe, but one with a little white button instead. The white button is what is making the clicking sound. I'm going to test the new battery to confirm it is discharged and charge it, but I just wanted to check that the older 6v system doesn't have some difference I'm not aware of from a typical 12v car system.