1991 Johnson/Evinrude EI 60 thru 70 outboards Service Manual, Page 23Get this manual
High Performance Any recreational engine, when used for high performance, requires systemIf 50: fueloil mixture in the fuel tank along with the the system is not used, 25: fueloil mixture is required in the fuel tankSevere Service The fueloil ratio remains the same when equipped recreational engine is used in commercial, rentalor extended severe serviceNo special consideration is necessaryFuelOil Mixing Instructions Note To used if engine' desiredautomatic oiling system is not
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 area Portable tankPour approximately gallon (4 litres) gasoline L.J into tank and add required lubricantReplace filler cap securelyThoroughly mix by shaking tankAdd balance of gasoline
J':Gasoline is extremely flammable and highly explosive