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Farmall & IHC Tractors Discussion Forum
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F4 Mag help

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JRM

05-19-2008 07:06:31




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I'm trying to get my F20 up and running. A little background, it was a good running tractor 2 years ago. A tornado hit my shop in July of 06, the F20 had minor damage and was driven out of the shop after we got all the debris off of it. It has sat outside until this past weekend. Water got in through a gap in the heat control valve and the motor was siezed. I got the motor freed up and have no spark.

I replaced the points and condensor. The coil was new about 2 years ago and I kept that. I took the mag apart, cleaned some light surface rust off of the armature and the pick ups. The magnetic still appears to be strong. I set the points a .013, the cap and distributer disc looked clean and the plug wire terminals are bright.

Any thing I'm overlooking? Is there a way to test the coil? Is it possible that the cap is water logged and needs to dry out? I tried plug wires from a different tractor and still had no spark. Any help would be greatly appreciated.

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Nebraska Cowman

05-19-2008 08:07:34




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 Re: F4 Mag help in reply to JRM, 05-19-2008 07:06:31  
Sometimes even new points have a film on them that keeps them from making good contact. Double check that first. If that checks out make sure it isn't grounded out. Like Jimmy says, check the rotating advance, you do know how that works? And it is possible to get the condenser wire shorted to the case. Oh and yeah. The magnet has a north and south pole. It has to be on the right way. If someone has not messed up the polarity the IH trade mark should be to the outside when the mag is on the tractor.

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James Williams

05-19-2008 07:23:17




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 Re: F4 Mag help in reply to JRM, 05-19-2008 07:06:31  
JRM,Reguardless what others say that F4 is a good mag.I have my tractors sitting out during the summer andthe mag has never got wet or failed to start,Its probally something simple,Is the kill switch shorted out,check the tab and make sure its not grounded out

jimmy



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