1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 28Get this manual
FuelOil Mixing Instructions INotel To used if engine's AccuMixautomatic oiling system is not desiredunder certain conditionsAlways stop engine and do not smoke or allow open flames or spark near the boat when refueling or changing fuel tanksAlways mix in well ventilated area ill
p Gasoline is extremely flammable and highly explosive
rv Portable tankPour approximately gallonReplace filler cap (4 litres) gasoline into tank and add required lubricantsecurelyThoroughly mix by shaking tankAdd balance of gasoline