Turning the the main mixture IN leans the mixture. Turning the idle mixture screw in richens the idle mixture. Initial settings are 2.5-3 turns out for main, 1-1.5 out for idle mixture. Start the engine, let it get to operating temperature, turn screw in until is stumbles, out until smooth plus 1/4-1/2 turn. Turn idle mixture screw in or out until the engine idles smoothly. Pull throttle back rapidly, engine should accelerate smoothly. Repeat adjustments until engine accelerates smoothly. If it refuses, clean carb in real carb cleaner and put in a kit. Some people turn the main screw out until engine smokes, then back in -- this is not necessary.
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Today's Featured Article - Product Review: Electronic Ignition - by Staff. Oil, for example has come a long way in the last 50 years and I don't use anything but the latest API grade available. I've heard the arguments for non-detergent oils but would never trade it for today's formulations. Paint is another, the modern acrylic enamels are great for resistance to grease and fuel stains, retaining their shine and they last forever; unlike enamels and lacquers . Still another is the alternator. No doubt using the original generator keeps the tractor pure, but for thos
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