If it takes a choke to run than your mixture is too lean or you don"t have adequate flow to run above idle. If you can"t adjust it out, you may have restricted fuel flow a dirty carb, or an air leak around the carb metering section causing excessive leaning of the mixture. With the engine running near idle CAREFULLY spray some starting fluid around the carb throttle shaft, the carb to manifold connect flange, and the cylinder head to block connection. Look for cracks and rust holes in the manifold itself. The engine will speed up when you hit the leak.
If you don"t find a leak then you"ll need to pull the carb and make sure the carb is clean
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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