1998 Johnson Evinrude EC 50 thru 70 HP 3-Cylinder Service Manual, Page 30Get 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 CIVIC 2+4 fuel conditioner, following directions on the bottleI Note Use flushing attachment if you operate the engine on a
trailer or dolly to prevent engine or water pump damage
When 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 tankThe mixture should include: Five gallons of fuel Two quarts of CIVIC Storage Fogging Oil One pint of Evinrude or Johnson Outboard Lubricant ozof CIVIC 2+4 fuel conditioner