1993 Johnson Evinrude "ET" 40 thru 55 Service Manual, P/N 508283, Page 33Get this manual
Break-In Procedure During the first 12 gallons of fuel you must use 50:1 fueloil ratio in your fuel tank in addition to the operation of the Oil Injection System or AccuMixAfter the 12 gallons offuel, check to see that the oil level in the has changed, indicating that oil has been used before using unmixed gasoline in the fuel systemIf the system is disconnected or the engine is not equipped with must use 25: fueloil ratio in the fuel tank for the first 12 gallons of fuelor AccuMix system, you