I am a homeowner and this machine (96 Walker Model C)has served us well. It worked fine last week. I tried to start it today and noticed an electrical burning smell. The ground cable, which was old, burned thru. I replaced the cable and tried again. The ground wire and battery heat up, so I'm guessing a short somewhere. The engine does not turn over or make any noise at all. The only Walker dealer within 100 miles closed a few years ago, and I've managed to keep this thing going on my own with help from forums like this. Where would you suggest I start looking? Any suggestions are greatly appreciated.