Superhornet
New User
I have an early 3010 diesel and it is hard to start as it does not crank over very fast and batteries dont stay charged. Starter and generator have been rebuilt installed new cables. I borrowed an old tech manual from a dealer and rang all the wires and found out the batteries are connected backwards according to their schematics. Their 3010 and 3020 all show solenoid to negative, positive to other battery negative either thru tractor frame or a separate cable and positive to side of starter stud. Mine is opposite. Is their book incomplete, what would happen if I switched it? Battery voltage rises when its running to appx 12.7 volts.