1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 20Get this manual
Fuel System FuelOil Ratios Fuel Requirements Carburetion Calibration Initial Low-Speed Setting Starting Enrichment Float Level Setting Float Drop Setting See Page 1-20 See Page 1-22 One Single-Throat Carburetor, Float Feed Adjustable Low Speed, Fixed Intermediate and High Speed