A poor design, but a very common one. My father, a professional auto mechanic, always replaced the throttle and choke plate retainer screws with extra-long brass ones when he rebuilt carbs. Then he used sidecutters to spoil the threads that protruded from the other side of the throttle shaft. The theory was that the ruined threads would prevent the screws from backing out and getting sucked into the engine; and if they somehow did fall out and get sucked in, brass would be less harmful to the engine internals than steel. He was not a big believer in Loctite, at least for moving parts that are continously exposed to gasoline.
He also believed that if fuel injection ever caught on for gasoline engines, it would cut his engine repair work by 50%- his opinion was that most engine wear resulted from mis-adjusted or worn-out carburetors diluting cylinder/valve lubrication.
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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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