I have a 1992/3 Mercury 90HP - (s/n 0D049608 m/n 1090412LD) - it sat up for about 2 years before I got it. Local shop has done the following:
-removed and cleaned carbs
-adjusted and sync'd carbs
-replaced fuel pump diaphragm
I have:
-drained all old gas
-refilled the tank with fresh gas and...
