Those are just Starting points, not hard and fast cast in stone settings, they must be tweaked til it runs the best and doesn't stumble especially when going from idle to high speed. Where those screws wind up will differ between machines. And don't be afraid to make slight adjustments as the engine wears in, possibly for weather conditions, etc.
That said, I initially set every carb that I work on to 1-1/4 turns out from seated and go from there. Some need adjusted tighter some looser from there. But I find that to be pretty close for most fresh from the get go.
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