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    <p>I think you have already figured this one out, Dean. Like Farmer
      says, "Check the grounds". :o)</p>
    <p>Phil in TX<br>
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    <div class="moz-cite-prefix">On 5/21/2020 7:11 AM, Mark Johnson
      wrote:<br>
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      <p>Is there anything in or around the shop that could have
        abruptly demagnetized the magnets...some of the older 'permanent
        magnet' metal recipes weren't all that permanent, although I
        never heard of one getting de-magged so abruptly!</p>
      <p>Mark J<br>
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      <div class="moz-cite-prefix">On 5/21/2020 12:55 AM, Dean VP wrote:<br>
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          <div dir="ltr" data-setdir="false">Was helping a friend today
            testing out some carburetors and Magneto's on his 1936 JD B.
            A very strange thing occurred. I was in charge of clean ing
            Magneto's up and getting them to the point that they would
            deliver spark manually on the bench. Then we would install
            them on a tractor and get the tractor running. I went though
            one Magenta pretty thoroughly and was getting really good
            spark out of both ports on the bench. Install it on the
            tractor absolutely no spark.   Could hear a really good
            impulse. We tried tightening it up tighter and also
            loosening it up. No change ...no spark.  Blew me away I was
            getting really GOOD SPARK MANUALLY NOT MORE THAN A FEW
            MINUTES BEFORE. W hat in the sawmill would cause something
            like that.  The only thing we didn't check was to see if the
            Magneto was getting grounded properly to the governor.  That
            is the only thing I can think of right now. What other
            reasons would cause this strange event???  Really weird.</div>
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