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Fairbanks Morse magneto FMX1B7E
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HVFDFIREFIGHTER View Drop Down
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Joined: 11 Jun 2013
Location: Heuvelton, NY
Points: 563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HVFDFIREFIGHTER Quote  Post ReplyReply Direct Link To This Post Topic: Fairbanks Morse magneto FMX1B7E
    Posted: 27 Jun 2017 at 12:56pm
I have a Wisconsin AEN engine that appeared to be stuck. Did a little more work on the engine this morning. Took the mag off. Now the engine turns freely but I can't turn the mag. Took the mag apart and it is full of a tar like substance. It is all over everything. I am soaking it in gas to try to get it dissolved. Not sure why it is in there in the first place. Does anyone know where I can get a Fairbanks Morse FMX1B7E rebuilt? I am sure I will not remember how to put it back together. I hate to buy replacement. Only paid $25 for the engine and it was running about 5 years ago. I can see how over time the gooey substance has worked its way down to the bottom of the mag and literally "gummed up the works".

Any help would be appereciated.
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HVFDFIREFIGHTER View Drop Down
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Joined: 11 Jun 2013
Location: Heuvelton, NY
Points: 563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HVFDFIREFIGHTER Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 12:58pm
I have pictures in my phone but the website says they are to big. I will post them later today.
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HVFDFIREFIGHTER View Drop Down
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Joined: 11 Jun 2013
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Edited by HVFDFIREFIGHTER - 27 Jun 2017 at 7:17pm
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Leon n/c AR. View Drop Down
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Joined: 19 Mar 2013
Location: Heber Springs A
Points: 175 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Leon n/c AR. Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 1:07pm
I would guess that mag has the old style coil with tar in the windings. Check with Steve  at B&B see if he can get parts to rebuild that model.
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HVFDFIREFIGHTER View Drop Down
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Joined: 11 Jun 2013
Location: Heuvelton, NY
Points: 563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HVFDFIREFIGHTER Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 1:12pm
        
Picture on left is after I cleaned the mag.  Removed all the tar.  soldier a wire back on the coil on the top.  Wrapped it in electrical tape. I am having trouble getting the wires back into the right spots.  Two black wires to screw at the bottom.  Red wire from the coil to screw beside the condenser.  Not sure about the two felt pieces.  Does anyone know how much of a point gap?  I will be surprised if this thing works.  I do not have that much faith in my skills.



Edited by HVFDFIREFIGHTER - 27 Jun 2017 at 7:24pm
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HVFDFIREFIGHTER View Drop Down
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Joined: 11 Jun 2013
Location: Heuvelton, NY
Points: 563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HVFDFIREFIGHTER Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 1:14pm
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Edited by HVFDFIREFIGHTER - 27 Jun 2017 at 7:29pm
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VTdirtguy View Drop Down
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Joined: 04 May 2017
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Points: 18 		Post Options Post Options   Thanks (1) Thanks(1)   Quote VTdirtguy Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 2:05pm
Here, I think I fixed them for you!
Grampa's old C got a whole new lease on life.
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HVFDFIREFIGHTER View Drop Down
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Joined: 11 Jun 2013
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Points: 563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HVFDFIREFIGHTER Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 6:19pm
OK. I got it all cleaned up. Does anyone know how the wires go on? Does this picture look right? Black wire to bottom black wire from condenser to bottom, red wire from coil to screw beside condenser. What should the gap be set at? What is the two pieces of felt for?
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HVFDFIREFIGHTER View Drop Down
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Joined: 11 Jun 2013
Location: Heuvelton, NY
Points: 563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HVFDFIREFIGHTER Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 6:20pm
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Edited by HVFDFIREFIGHTER - 27 Jun 2017 at 7:27pm
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HVFDFIREFIGHTER View Drop Down
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Joined: 11 Jun 2013
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Points: 563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HVFDFIREFIGHTER Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 6:23pm
I removed all the tar. Wrapped the coil in tape. I really don't see how on earth this will work. I had it completely apart. I just don't have faith in my skills.
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Matt (Jordan,MN) View Drop Down
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Joined: 12 Sep 2009
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Points: 3799 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Matt (Jordan,MN) Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 6:29pm
All 3 wires go under the screw for the points. The felt on the right is a oil wick. the one on the points acts as a shield so the point contact doesn't get full of oil. I have never seen a coil leak that bad before. I sure the coil will need to be replaced. I can rebuild it. Matt   
Owner of Matt Scott LLC
Specializing in NOS and used Allis Chalmers tractor & implement parts & liturature and Magneto Repair
http://www.mattscottllc.com/
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Bill Long View Drop Down
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Joined: 12 Sep 2009
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Points: 4556 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bill Long Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 8:42pm
Steve NJ is our resident expert and a sponsor of this site.  You may want to contact him for a rebuild or any other information.
Good Luck!
Bill Long
PS  There may be other sponsors closer to you - Sandy Lake for one
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Hubert (Ga)engine7 View Drop Down
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Joined: 12 Sep 2009
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Points: 6443 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hubert (Ga)engine7 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 9:07pm
I highly recommend Steve in NJ (B&B Custom Circuits). It will be like new when you get it back.
Just an old country boy saved by the grace of God.
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Gerald J. View Drop Down
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Joined: 12 Sep 2009
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Points: 5636 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerald J. Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2017 at 9:34pm
Page 11 of my AEN manual says point gap is 0.015" On that same page it suggests a magneto test. Take the plug wire off the plug and hold the bare connector 1/8" from the engine head bare metal. Turn the crankshaft by hand until the impulse mechanism trips. Should be a good spark at the plug wire. If not it suggests setting the point gap and if that doesn't work change the condenser. I'd think cleaning the points with a point file might also be useful, of course the point gap will have to be readjusted after filing.

This AEN manual includes a 4 page Fairbanks-Morse magneto manual with more details. Filing the points is mentioned there. Among the details are that the cover has a gasket that is held in place with varnish and that when reassembling after working on it and it is proven to work that a new gasket and fresh varnish should be installed.

Gerald J.
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Joined: 12 Sep 2009
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Points: 5636 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerald J. Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2017 at 9:52pm
I have scanned that manual section and posted it at: http://www.geraldj.networkiowa.com/Trees/FM-Xmagneto.pdf
It came out huge but is sharp.

Gerald J.
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drobCA View Drop Down
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Joined: 20 Jun 2017
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Points: 292 		Post Options Post Options   Thanks (0) Thanks(0)   Quote drobCA Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jun 2017 at 9:49am
thanks again for yet another great reference piece from the Gerald J. Library.
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HVFDFIREFIGHTER View Drop Down
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Joined: 11 Jun 2013
Location: Heuvelton, NY
Points: 563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HVFDFIREFIGHTER Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jul 2017 at 5:42pm
Thanks to Bill at Sandy Lake Implements. I got a new coil and got it running.

Here is the video. https://m.youtube.com/watch?v=1Uw2rOqlGNU&feature=youtu.be

Edited by HVFDFIREFIGHTER - 14 Jul 2017 at 5:44pm
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