nepa
Silver Member
- Joined
- May 31, 2013
- Messages
- 117
- Location
- Forest City, PA
- Tractor
- Mitsubishi 180D, Jinma 284 sold, Kubota BX2660, IH Cub, Case 580CK, Minneapolis Moline 4 Star (sold), TYM 574, Furukawa FX-040
I bought a 1959 Minneapolis Moline 4 Star for restoration because I liked its looks and was in really good condition. The engine did have a slight miss so I bought plugs, points, capacitor, rotor, cap, and wires. I put in the plugs first and no change. I put in the new points, capacitor, rotor, and cap next, tested it and saw only slight improvement. I next changed all the wires and found the problem -- the tower of the coil was completely corroded and the whole socket inside pulled out with the wire. I installed a new coil with the wire from the ignition switch to the positive terminal and the grounding wire from the points to the negative terminal. The engine just sputtered and could not run for more than 5 seconds. After a lot of cranking, I put the battery on a charger. I was really surprised to find that the tractor had a positive ground. The 4 Star was made for about 7 years and apparently all were positive ground. But my problem is: after correcting the polarity of the coil the tractor still won't start. Could reversing the polarity have damaged the coil or capacitor?