1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 27Get this manual
FuelOil Mixing Instructions Notel To be used if engine's AccuMix automatic oiling system is not desired& Gasoline is extremely flammable and highly explosive under 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 areaPortable TankAbove and below 32 (00 e), add one gallon (4 litres) of fuelPour in required amount of oilAdd remaining fuelInstall filler cap and tip tank gently to distribute oil
m rnslowlyPermanently Installed TankAbove 32 FF (0pour oil with the fuel as tank is filledBelow 32
(00 e)' e), add one gallon (4 litres) of fuel to separate containerPour in required amount of oilInstall filler cap and tip container gently to distribute oilSlowly pour oilfuel mixture into tank with fuel as tank is filledTo prevent static spark, use large metal filter funnel as shown in figureThe fuel nozzle must contact the metal funnel when filling the tank