I don't remember just where I got the information. Might have been at service training from one of the older IH "block men" like they called them back then. But anyway, the explanation is for safety first off and second, the magneto's advance was closer to 40 degrees so setting it 5 after gave you the recommended 35 degree advance. As you well know, a few degrees one way or the other on those old low comp engines didn't amount to squat. When we put power packs in , well, things got to be fussier. One other thing that has never been mentioned is if crankshaft has been ground, sometimes the grinder cheats a little to get the best overall journal and that can change the top dead center a bit. The local machine shop explained that to me one day as I had found an 806 diesel that the flywheel tdc mark was off 8 degrees and it had been reground previously. I used a dial indicator on piston when head was off to determine that. That really threw me as I hadn't run into that before or maybe just never checked the marks that close. I would not want to hand crank an engine timed to fire at top dead center. It could go either direction really easy.
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Today's Featured Article - Tractor Profile: Allis-Chalmers Model G - by Staff. The first Allis-Chalmers Model G was produced in 1948 in Gasden, Alabama, and was designed for vegetable gardeners, small farms and landscape businesses. It is a small compact tractor that came with a complete line of implements especially tailored for its unique design. It featured a rear-mounted Continental N62 four-cylinder engine with a 2-3/8 x 3-1/2 inch bore and stroke. The rear-mounted engine provided traction for the rear wheels while at the same time gave the tractor operator a gre
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