BURNT POINTS

When you replace your points, are you replacing the condenser too? If your point gap is off even a couple thous., they will arc.

I think Jim was referencing this too, make sure your distributor shaft is stable, not floating back and forth as it turns due to a worn bushing, that throws-off your point gap.

The fouled plugs is a typical indicator of a weak ignition problem. I'll bet they are related to your burned points.

When your points break the battery current to your coil, it causes a collapse of the coil field, giving your high voltage spark. If your points are arcing, the high voltage field is deminished... weak spark... fouled plugs.

Also, make sure your your coil polarity is connected correctly to your battery lead. For a pos. ground system, The manual says the + term. on the coil is hooked to.... the lead to the points... I think. The engine will probably run either way, but you get the strongest spark when the polarity is correct on the coil.

Hope this helps

1. Capacitor (Condensor) could be bad. This capacitor prevents excessive arcing when all other components are working properly. This is cheap and good insurance; you should probably replace it.

2. Too much current throught the coil. 2a. If you have converted to 12 volts and are still using the 6 volt coil, you should be using a ballast resistor to drop the volts to the coil. 2b. Also, even is using a 6 volt system, if the coil has some shorted turns it will reduce the normal resistance (and still may work) and create high current. 2c. Also, a malfuctioning generator/regulator/alternator could have raised the voltage to an abnormally high level. Check the voltage.

3. Bouncing points. Usually this is aproblem with high reving engines, and not tractor engines. However, wrong spring tension, worn distributor cam, poor gap adjustment, etc. can contribute to this.