FIXED - AFB 4bbl broken adjustment screw

Put the carb in a sonic cleaner at High temp for 40 mins. If the tab is still on it you will be able to turn it out with a needle nose pliers. Sonic cleaner waves will take out any corrosion on the treads to the bottom. The high temp will expand the aluminum body and the screw will get fairly loose. Been there several times with old carbs that some try to rebuild. You guys won't believe how well this works.