1991 Johnson Evinrude EI 60 Loop V Models 150, 175 outboards Service Manual, Page 19Get this manual
High Performance Any recreational engine, when used for high performance, requires 50:1 fueloil mixture in the fuel tank along with the VRO systemIf the VRol system is not used, 25: fueloil mixture is required in the fuel tankSevere Service The fueloil ratio remains the same when VRol equipped recreational engine is used in commercial, rental, or extended severe serviceNo special consideration is necessaryFuelOil Mixing Instructions To be used if engine's VRol automatic oiling system is not desiredGasoline 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 refuelingAlways refuel in well ventilated area l'
Built-In TanksTo prevent static spark, use large metal filter funnel as shown in figureThe fuel nozzle must contact the metal funnel when filling the tankTwo methods for refueling built-in tanks: Mix the lubricant slowly with the fuel as the tank is filled Using separate container, mix all the necessary lubricant with gallon (4 litres) of fuel and pour this mixture slowly with fuel as tank is filled