I've nearly completed overhauling and restoring a
1947 "C". This tractor and a parts tractor both
ran prior to the restoration. However, now I have
a problem in that after the motor runs for twenty
minutes or so, after shutting it off for a minute
or so it won't start again until its cooled off.
It restarts under the warm condition if I restart
it immediately. Does this sound like the magneto
coil is bad or could it be some sort of
carbeurator vapor lock? I have a handy book by
Neil Yerigan titled "How to restore tractor
magnetos." The book is very helpful but it
prompts several questions and I don't know how to
ask them of Mr Yerigan directly. So, if any of
you have some ideas about them I'd appreciate your
response:1: What is the magnetic rotor? Is it the armature? 2: Where is the neutal point on the magnetic rotor? 3: At one point Neil Yerigan states "if the high
tension points of the distributor cap shows a lot
of wear the cap should be replaced. . ." How does
one determine what "a lot of wear" is? 4: On page 97 Mr Yerigan alludes to
"remagnetising" the rotor. How is that done? 5: How does one run the magneto on a test bench? 6: At another point Mr. Yerigan suggests that "by
testing the nagneto with a grounded screwdriver,
if you see a 1/4" or larger spark when turning the
impulse. . ." I'm not sure how to create such a
spark - - between what and what? Any comments regarding any of the above will be
greatly appreciated. Lee in Wisconsin
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