The other screws are idle mixture and idle speed. Idle speed is self explanatory, make it fast enough so that it runs smoothly and doesn't die. Maybe 4-600 rpm. Same way with the mixture, in or out until smooth. Lean is out rich is in. Turn the load screw 5 turns out, that is max power, it will run and get better fuel consumption turned in 1-1.5 turns, or whatever works. You do not adjust it as in the earlier models prior to the Super H/M. Which is in until rough, out until smooth. If you do that it will be too lean. If that does not work, you need to disassemble and clean it again, possibly it needs a kit.
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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