You covered all the correct bases. I am using a 6 volt coil with a ballast resister. And, yes I did change the polarity everywhere. I even added big magic marker notes at the battery reminding myself to connect the ground cable to battery ground.
After the tractor quit I pulled plugs and laid them by their respective threaded ports. I had viseable spark but must admit it was weak. I now know a weak spark doesn't get the job done.
I tested the points with my ohm meter by loosening (after marking the position) the distributor and twisting it back and forth. With the points closed I was reading no resistance. This made me believe the points were ok.
At that point, in desperation, I installed a kit including points, condensor, and rotor. Wallah!!! the tractor started and ran great.
I followed up by checking the timing with a light and it appeared "right on" at 4 degrees advance.
Gary
PS: I am considering converting to a 12 volt coil and getting rid of the resister. Some 12 volt coils advertise an internal resistor...I don't quite understand that.
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Today's Featured Article - Tractor Implements and Their Use - by Curtis Von Fange. Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he reached his early sixties
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