1994 Johnson Evinrude "ER" 60 LV 150, 150C, 175 Service Manual, P/N 500611, Page 26Get this manual
Off-Season Storage Use the following procedure to properly prepare Johnson and Evinrude outboards for extended periods of non-useThese steps are intended to protect the engine during storage and simplify the preseason servicing procedure1Stabilize the engine's fuel supply with OMC 2+4fuel conditionerAdd one ounce (30 ml) of OMC 2+4 fuel conditioner for every gallon (3,8 litres) of gasoline'" When using flushing attachment, always remove engine's propeller before starting engine to prevent accidental contact with moving propellerUse flushing attachment if you operate the engine on trailer or dolly to prevent engine or water pump damage
2In shop V6 six-gallon gas tank, prepare an engine "storage mixture" consisting of:
Five Two One One gallons fuel quarts OMC Storage Fogging Oil pint Evinrude or Johnson Outboard Lubricant pint OMC 2+4 fuel conditioner
3Connect the tank containing the "storage mixture" to the engineLeave the oil supply line connected to the engineRun the engine at approximately 1500 RPM for five minutes to ensure that the entire fuel supply system and the engine's carburetors are full of stabilized fuel