1993 Johnson Evinrude "ET" 90 degrees CV Service Manual, P/N 508285, Page 21Get this manual
High Performance Any recreational engine, when used for high performance, requires 50:1 fueloil mixture in the fuel tank along with the systemIf the system is not used, 25fueloil mixture is required in the fuel tankSevere Service The fueloil ratio remains the same when equipped recreational engine is used in commercial, rental, or extended severe serviceNo special consideration is necessaryFuelOil Mixing Instructions To be used if engine's desiredautomatic oiling system is not
i der 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
'" Gasoline is extremely flammable and highly explosive un-
f1l Portable tankPour approximately gallon (4 liters) gasoline
LJ into tank and add required lubricantReplace filler cap securelyThoroughly mix by shaking tankAdd balance of gasoline'" Built-in tanksTo prevent static spark, use large metal