Re: 51 M won't crank/start anymore, HELP!!

Posted by captaink on April 21, 2005 at 06:14:04 from (66.115.214.56):

In Reply to: 51 M won't crank/start anymore, HELP!! posted by Granger on April 20, 2005 at 21:55:12:

It sounds to me like your charging system is not working. If I remember correctly at least some (if not all) the 51 M’s had a regulator, not the cutout. The regulator was mounted on the rear gas thank support above the starter button. You problem lies in either the generator or regulator not working correctly.

Charge the battery and get the tractor running. Take a wire and ground the F terminal on the regulator and see if your ammeter shows that the generator is charging. If so, the generator is working and the regulator is at fault. If not, then the generator is not working, (doesn’t prove that the regulator is working though) and needs fixing. It could be as simple as a stuck brush or as bad as the fields or armature being toast.

Although I switched all my tractors to 12 volt, I agree with P Backus that if you were satisfied with the way it was starting before on 6-volt, there is no reason to switch to 12-volt. This just sounds to me like the charging system is not working.

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