1998 Johnson Evinrude "EC" 90, 100C, 105C, 115, 150, 150C, 175 60 deg. LV Service Manual, P/N 520210, 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 ONIC 2+4fuel conditioner, following directions on the bottle&
When using flushing attachment, always remove engine's propeller before starting engine to prevent accidental contact with moving propeller
I Note Use flushing attachment if you operate the engine on a
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 gallons of fuel Two quarts of ONIC Storage Fogging Oil One pint of Evinrude or Johnson Outboard Lubricant 212 ozof ONIC 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 fuelINotel