Engine off, dash lever set to fast, the carb throttle plate should be in the wide open position.
Engine running at idle, while watching the carb, suddenly push the dash lever to full speed, you should see the throttle instantly go wide open, then modulate back to full governed speed, 1400 RPM.
Also check the distributor. Check the centrifugal advance, check for side play in the shaft. If either has a problem the timing will not stay set or function properly.
And check the air cleaner. There is a wire mesh element inside the canister. It is commonly clogged with dirt enough to restrict the air flow.
With everything in good operating condition, then the carb and jetting can be addressed. A properly jetted and adjusted carb should be able to take sudden throttle from slow idle without hesitating or balking. If it hesitates, it's too lean. Continued black smoke, sooty exhaust, black plugs, it's too rich.
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Today's Featured Article - Museum Coverage: The Stuttgart Agricultural Museum - by Cindy Ladage. While cold wind was blowing back in Illinois, in Arkansas, daffodils were in bloom, and the Magnolia trees were adorned with fragrant blossoms. Stuttgart, Arkansas was the site of this year's winter Minneapolis Moline Collector's show February 25-27, 1999. The show was held at the Oliver Museum created by Don Oliver, the pioneer of the four wheel drive tractor. Oliver along with Gale Stroh and Kenneth Bull using Minneapolis Moline tractors and parts created what has become known as
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