1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 27Get this manual
High Performance Any recreational engine, when used for high performance, re" quires 50: 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 tank fN=l
Models equipped with the optional AccuMix system will require 50:1 fuel oil mixture in the fuel tank in addition to the lubrication supplied by the AccuMix system, when used in high performance applicationsSevere Service
The fueloil ratio for recreational models is 50:1 (2 oil) when used in commercial, rental, or extended severe serviceFuelOil Mixing Instructions
IN=J To be used if engine's VRol or AccuMix automatic oiling
system is not desired
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-
Gl Portable tankPour approximately gallon (4 liters) gasoline