Re: 6 or 12 v coil ???

Posted by Gerald J. on July 31, 2007 at 15:32:17 from (67.0.97.211):

In Reply to: Re: 6 or 12 v coil ??? posted by old on July 31, 2007 at 13:42:29:

My gas 4020 has that 6 volt coil and the original resistor was a part of the ignition switch. There is an S terminal on the starter solenoid and it applies 12 volts directly to the 6 volt coil for starting. And for the short time while cranking its probably only applying 10 volts anyway. Not something that will harm the coil. Going to a 12 volt coil will not have a signifcant effect on the lifetime of the coil and won't be good for strong ignition with the resistor in place.

Poor spark or fouling plugs can come from carbon instead of copper plug wires and from running Champion plugs. Seems like the modern Champion tractor plugs can't be cleaned when they get dirty either by engine operation or a spark plug cleaner.

Plugs may be fouling from oil or from running rich. The float needle and seat get worn from decades of vibration and don't seal off gas making the engine run rich.

Gerald J.

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