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Tractor Talk Discussion Forum

Re: Getting a Farmall A to fire

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rpbat

03-31-2013 15:24:51
66.190.213.163



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I tested the kill switch for continuety and conected the coil wire to the coil but disconected it from the distributer and placed the end of the wire 1/8 of an inch next to the negative wire on the distributer and still did not get a spark. Also the coil is new and the tractor was converted to a 12 volt system a couple decades back.




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Bernie/M

03-31-2013 16:10:56
67.142.166.25



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 Re: Getting a Farmall A to fire in reply to rpbat, 03-31-2013 15:24:51  
Do you have compression? If you don't pour some oil into the sparkplug holes. That's how I got my JD 420 started after it sat for years stuck (after I got it freed up)



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old

03-31-2013 15:59:21
209.86.226.40



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 Re: Getting a Farmall A to fire in reply to rpbat, 03-31-2013 15:24:51  
From what your saying it sounds like you do not know what you have. Is this a true distributor or a mag??? With out knowing that hard to help you but from what I can figure your saying good chance the points need cleaned or replaced. Bad points equal NO SPARK



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rpbat

03-31-2013 16:08:52
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 Re: Getting a Farmall A to fire in reply to old, 03-31-2013 15:59:21  
It is a mag,but the problem is between the kill switch and the coil. I cant figure out what it is though



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John T

03-31-2013 17:18:02
66.87.7.73



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 Re: Getting a Farmall A to fire in reply to rpbat, 03-31-2013 16:08:52  
From your original post it sounded like it was a battery powered coil ignition (to which I posted a Troubleshooting Procedure), now you say its a Mag?? If its a Mag all a kill switch does is to provide a frame ground connection (via a kill switch) when turned OFF/Stop but its open (NOT to ground) when On/Run. As long as the mag (if kill switch terminal equipped) isn't grounded it can fire

Most common problem on Mags is the points are burned pitted or corroded which a good clean/buff/polish or use of a points file may cure

John T

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rpbat

03-31-2013 17:33:53
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 Re: Getting a Farmall A to fire in reply to John T, 03-31-2013 17:18:02  
I think that it maybe a distributer and not a mag because it was converted to 12 volt system. How can I tell if this is a mag or a distributer.



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old

03-31-2013 16:25:35
209.86.226.18



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 Re: Getting a Farmall A to fire in reply to rpbat, 03-31-2013 16:08:52  
If it has a mag to get spark remove the wire from the side of the mag and then spin it over and hold one of the plug wires about a 1/4 inch from the block. A mag does not use battery voltage to make spark



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rpbat

03-31-2013 17:22:57
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 Re: Getting a Farmall A to fire in reply to old, 03-31-2013 16:25:35  
I checked for continuety between both battery temernals with the baterry disconected and I did have continuety. Does this mean I have a short circut?



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rpbat

03-31-2013 17:01:50
66.190.213.163



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 Re: Getting a Farmall A to fire in reply to old, 03-31-2013 16:25:35  
Do you mean the neggative wire going for the coil to the side of the mag?
This post was edited by rpbat at 17:10:59 03/31/13.



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old

03-31-2013 19:09:04
209.86.226.27



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 Re: Getting a Farmall A to fire in reply to rpbat, 03-31-2013 17:01:50  
If you have a mag the battery and the mag is never ever hooked to each other and if it is then you fry the coil in the mag the moment you hook things up. Still sounds like your lost and do not know what you have a mag or a distributor???????????



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