1990 Johnson Evinrude "ES" 40 thru 55, P/N 507872, Page 32Get this manual
Off-Season Storage Use the following procedure to properly prepare Johnson and Evinrude outboards for extended periods of nonuseThese steps are intended to protect the engine during storage and simplify the preseason servicing procedure1 Stabilize the engine's fuel supply with OMC 2+4 fuel conditioner Add one ounce of OMC 2+4 fuel conditioner for every gallon of gasolineI Note Use flushing attachment if you operate the engine on trailer or dolly to prevent engine or water pump damageWhen using flushing attachment, always remove engine's propeller before starting engine to prevent accidental contact with moving propeller
2Run 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 fuel3Prepare an engine "storage mixture" in shop V6 six gallon tank PI 397767The mixture should include: Five Two One One gallons of fuel quarts of OMC Storage Fogging Oil PI 171703 pint Evinrude or Johnson Outboard Lubricant pint OMC 2+4 fuel conditioner PI 174275