Where does the A/F screw on the bottom of the carb need to be set? 1989 merc 3.0
mudmagnet63 Petty Officer 1st Class Joined Sep 28, 2007 Messages 231 Jun 19, 2008 #1 Where does the A/F screw on the bottom of the carb need to be set? 1989 merc 3.0
JustJason Vice Admiral Joined Aug 27, 2007 Messages 5,321 Jun 19, 2008 #2 Re: Air Fuel screw setting 3.0 Merc. I could explain it but your better off just googling "lean drop" method for adjusting carbs... you should find what you need if you use that term
Re: Air Fuel screw setting 3.0 Merc. I could explain it but your better off just googling "lean drop" method for adjusting carbs... you should find what you need if you use that term
R RJLeuwen Seaman Joined Jun 19, 2008 Messages 69 Jun 19, 2008 #3 Re: Air Fuel screw setting 3.0 Merc. Normally about 1.25 to 1.5 turns out RJ
