Re: 1989 Mercury 45 hp carburator floating adjustment
If it's anything like mine they are a pain in the backside. When you hold the carb upside down the floats should be perfectly level with the gasket surface.
That did the trick for me, got the engine running great, but still a bit of fuel comes out the carb throat after I shut it down. Not much, just a dribble..a tonne better then before I rebuilt them though.
Ian