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JD MODEL M WON'T START

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JEFF IN OREGON

02-01-2002 15:31:50




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I am working on my grandpa's JD M. It is a 6 volt, positive ground. The tractor won't start, when using the starter. It won't even turn over. It starts fairly easily with the hand crank, although that took awhile to learn. When running, it shows that it is charging. I have charged the battery, but no luck. The only time the starter seems to work at all, is after running the tractor for a few hours, after turning it off, if I pull on the starter knob, it will turn over once or twice. When charging the battery, do youstill charge + to + & - to -, that is how I did it. Does this sound like a battery problem to all of you?

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JEFF IN OREGON

02-04-2002 09:36:35




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 Re: JD MODEL M WON'T START in reply to JEFF IN OREGON, 02-01-2002 15:31:50  
THANKS FOR ALL OF THE HELP.
IT WAS THE BATTERY.
I WILL ALSO BE REPLACING THE CABLES.
THANKS AGAIN,
JEFF



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CPeter

02-01-2002 17:01:27




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 Re: JD MODEL M WON'T START in reply to JEFF IN OREGON, 02-01-2002 15:31:50  
Ditto on all of the above. Make sure that the battery is good. A new one is only about $25 or $30 and well worth the investment if you have any questions about it. The 6 volt system is fine. I have a 40 and a 420 and both will start to well below zero when everything is anywhere near right. As stated, make sure that all the connections are good. I did cheat a little and replaced my generator pully with a slighly smaller one to make it charge a lower RPM. Other than that and occasional rebuild of the starter and generator they have gone for over 30 years just fine

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John

02-01-2002 16:33:45




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 Re: JD MODEL M WON'T START in reply to JEFF IN OREGON, 02-01-2002 15:31:50  
Sure sounds like a battery problem to me, you should probably remove the battery and have it load-tested. Beware the yahoos who will advise you to change your M to a 12-volt system and put on an alternator---if all is well with the electrical system, the 6-volt system will work just fine, and will start the tractor in below-zero temperatures.
Also, check your battery cables and ground connections, too, make sure they are clean and making good contact.

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Dan

02-01-2002 19:49:21




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 Re: Re: JD MODEL M WON'T START in reply to John, 02-01-2002 16:33:45  
I have a JD MT that starts great anytime and is 6 volt, one of the things with the 6 volt is to make sure the battery cables are heavy enough, #4 or #2 is even better. You might want to check the starter to see if there is a short in the armature or fields also. I also have a 430 that I converted to 12 volts with an alternator several years ago. It never turned over very fast and it was my loader, snowplow feeding tractor. I use the lights a lot and the Alternator is great. Much easier and cheaper to get 12 volt lights. In your case there is no reason the 6 volt shouldn't spin the M over. Make sure you have a good heavy 6 volt.

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