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Case Tractors Discussion Forum
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Case S - no spark

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Steinar Moen

08-10-2004 13:47:38




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Thanks to Allan C and C. Amick, I have learned a lot: My Case S was made in 1947. I know how to dismount the gears in the magneto, and I know how to install them again. I know how to adjust the points. I know that the grounding wire should be disconnected to override the switch.
Well, I tried all this, but there is still no spark. I have also made new cables to the spark plugs, and made proper contact all the way to the plugs. I am about to give in!
How do I continue? I understand that there are three possible problems: 1) The magneto has no magnetism left, or 2) The condenser is broken, or 3) The coil is broken. How do I isolate the problem from here? Thanks to any contributor from Steinar in NORWAY!!

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dlp

08-12-2004 18:09:01




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 Re: Case S - no spark in reply to Steinar Moen, 08-10-2004 13:47:38  
Do you have an automotive electrical repair shop in your area? If you do & they have been around a while, they may have a machine to hook your mag up to & give it a spin. They should be able to magnetize it also. When you cleaned the points, did you check it with a ohm meter? Sometimes they get a buildup on them that is tough to knock off. My mag had a crack in the insulation on the wire from the coil to the points also.

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John Saeli

08-10-2004 16:27:23




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 Re: Case S - no spark in reply to Steinar Moen, 08-10-2004 13:47:38  
Hey Steinar: Even though you adjusted the points, they may need cleaning. Clean them with very fine emery paper (#220). Also, take all the wire connections loose, & clean them. Most of the problems I encounter with CASE Mags are dirty connections.



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Steinar Moen

08-11-2004 13:28:11




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 Re: Case S - no spark in reply to John Saeli, 08-10-2004 16:27:23  
Thank you for anwering! Yes, I have cleaned the points with fine emery paper. What wire connections do you mean? I have cleaned the connections from the distributor cap to the plugs. Are there any connections behind the points that should be cleaned?
I feel that you have a norwegian-like name. Is that correct?



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dbb62

08-10-2004 15:03:16




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 Re: Case S - no spark in reply to Steinar Moen, 08-10-2004 13:47:38  
My 48 S came to me with an external coil cobbled on because the one in the magneto went out.

Don't know how to test to see if that is your problem, but a local auto parts store should be able to find a coil for a 6v system pretty cheap. Mine works great, just looks kinda funny.

If you email me I'll send you a picture for what it's worth.



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Steinar Moen

08-11-2004 13:33:51




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 Re: Case S - no spark in reply to dbb62, 08-10-2004 15:03:16  
Thank you! I still wonder how to search for the exact problem. Why can't you just install a new coil? Can you live with the funny solution with the external coil?



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C. Amick

08-12-2004 13:03:04




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 Re: Case S - no spark in reply to Steinar Moen, 08-11-2004 13:33:51  
You can install an external coil. I bought an SC (not running) that someone had put an external one on the magneto. I put a distributor on it when I rebuilt the engine. My dad has a Farmall Cub with magneto that he ran an external coil on for years.



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Steinar Moen

08-14-2004 15:39:44




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 Re: Case S - no spark in reply to C. Amick, 08-12-2004 13:03:04  
Thanks!
But, why should I believe that the coil is defect? Do you know any method to isolate the real problem; coil, condenser or mag?



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C. Amick

08-16-2004 05:39:11




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 Re: Case S - no spark in reply to Steinar Moen, 08-14-2004 15:39:44  
No, I don't know of any methods. You just have to go through a process of elimination, starting with the points. The points usually only need cleaning. You probably can get a condenser from magnetoparts.com. The only reason I suspect the coil is due to the fact that it has been sitting for a long time and for some reason coils don't hold up well not being used.



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