Hello JimN: I remember reading some of the start instructions a long time ago. Might have been from our '41MD. On a standard engineering day of 59F and 29.92 Hg it was suppose to be 600 turns on gas minimum befor going to diesel. Dad insisted that we cool on diesel then switch back to gas and then use kill switch. When stopped, shut off gas lever. That was our standard way with our MD's because Dad was trained on diesel mechanics befor buying our '41 MD, which was the first one in MN and 6th from the factory. It never had the head replaced. The late '53 SMD was run the same way, mostly by me, and also never had the head replaced. Great engines. That '41 payed for our farm during WW2 by doing extra custom work on the side besides all heavy work on two family farms befor being traded for the SMD. Not disagreeing with you at all, just tossing in my 2 cents. agpilot
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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