1997 Johnson Evinrude "EU" 9.9 thru 30 2-Cylinder Service Manual, P/N 507263, 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