Posted by Peter M Fallert on September 25, 2023 at 12:37:19 from (136.143.157.161):
I have recently purchased a 1955 John Deere 40-C crawler.
I'm trying to adjust the carb. The high speed load jet adjustment seems to be working, but the idle speed is mysterious.
No matter what I do , it seems to not have any effect on how the tractor idles. when I rotate the speed handle all the way to the left to idle position the tractor dies.
I've had the carb apart and it was clean as whistle inside, all passages clear. I've read in two place now that screwing the idle screw in richens, and screwing it out leans. Is the screw/needle an air bleed? Advice please. Thank you, Peter
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Today's Featured Article - Memories of an IH Super A When I was ? up to 10, I worked on my Papaw's farm in Greeneville, TN every summer. As I grew older (7), it was the thrill of my day to ride or drive on the tractor. My Papaw had a 1954 IH Super A that he bought to replace a Cub. My Papaw raised "baccer" (tobacco) and corn with the Super A, but the fondest memory was of the sawmill. He owned a small sawmill for sawing "baccer" sticks. The Super A was the powerplant. When I was old enough (7 or 8), I would get up early and be dressed to
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