I've never worked on a JD carb, but they're made of cast iron, and cast iron can be heated up with a torch in the area of the stuck choke, and then spray some PB Blaster on it as it cools. When the carb is cool to your touch, grab that choke lever with a pair of pliers and begin GENTLY wiggling it back and forth, a little more PB Blaster, and before you know it that choke will be free, and then you can take it all apart. Screws, bolts, etc, and nearly anything else that is stubborn about moving will also benefit from the heat-er-up and cool-er-down philosophy.
Do NOT subject any parts made of aluminum or pot metal to the heat. A venturi made of aluminum or pot metal will just sort of disappear if you get it TOO hot.
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Today's Featured Article - Fire in the Field A hay fire is no laughing matter-well, maybe one was! And a good life-lesson, too. Following World War II many farm boys returned home both older and wiser. One such man was my employer the summer I was sixteen. He was a farmer by birth and a farmer by choice, and like many returning soldiers, he was our silent hero: without medals or decorations, but with a certain ability to survive. It was on his farm that I learned to use the combination hand clutch and brake on a John D
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