I had the carb apart to flatten the halves because it was leaking gas last season. I sanded both sides with 600 grit on a sheet of plate glass and lots of lube. Along the way, I blasted carb cleaner through all the passages, so it wasn't a complete rebuild. But the engine ran and idled fine last season.
So I guess I should leave the main adjustment at 1 1/2 turns out, then work on the idle mixture screw as I reduce rpm.
When the throttle control is all the way back, the throttle arm is on the stop.
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