Nice find. We work on some pumps on petroleum barges that may be set up similair to that as far as starting. On the petro barges they don't want any electrical systems that could spark. On ours the hand pump charges oil against a nitrogen charged cylinder and the nitrogen pushes the oil through a hydraulic motor to spin the engine for starting when you press a foot pedal. After the engine starts there is a hydraulic pump that recharges the cylinder for the next time. The problem is the nitrogen leaks over time and won't hold pressure, therefore the engine spins about two revolutions and then you pump the hand pump some more. You may consider converting to battery/starter/alternator depending on your intended use.
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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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