Kory, I think this has been answered to you several times but in short no. You have to look back IH had the dt 361 engine, used in tractors and construction equipment, like the td15 B dozer. Latter they came with the DT 407 engine larger bore. The 407 is just an improved dt361. Same with your 806 and 856 just a little more engine. We have put many of the 407 pumps on the old 361 engines with no problem. Timed to high they will run hot too low and will be hard to start. I really never paid a lot attention to the marks but more just found a sweet spot between good starting and good running. I guess at 76 years old what I am trying to tell you is you are making a mountain out of a mole hill is the way old folks would put it. Just get the thing running and watch the temp and ever thing will be fine. I can,t see that pump over fueling the engine unless you really dogged it. Good luck and hope you get this problem behind you.
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Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
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