Posted by buickanddeere on May 09, 2008 at 21:34:26 from (216.183.151.137):
In Reply to: jd 520 posted by rainmaker on May 09, 2008 at 19:43:19:
There is a high resistance connection(s) cable(s) in the electrical circuit. That when under the 400+ plus cranking amps. The voltage drops so low the ignition system can't jump a spark across the plugs.
Make certain the ballast resistor circuit and ballast bypass is working. And a 6V coil has been wiring in with the proper polarity.
Most people go to a + chassis system and wire the coil *ss backwards with the - lead going to the points.
Those 520/530's are sweat little tractors . Everything a B should have been and will shame a G in power and economy too. With live pto, live hydraulics, duplex carb and power steering besides.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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