Like the others have stated the contacts are stuck closed on the regulator. Leave the bat terminal disconnected and take the top off the regulator and you should be able to see which contacts are stuck closed. You should be able to clean the contacts the same way you would breaker points and get it working again. If not it will need replaced.
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Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
... [Read Article]
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