1987 Johnson/Evinrude CU Outboards 35A thru 55 Service Manual, Page 58Get this manual
Submerged Engines Engine Dropped Overboard (Not Running) If engine is recovered from water immediately, it must be serviced within three hoursSee Prolonged SubmersionOnce the outboard is exposed to air, both fresh and salt water will start etching the highly polished bearing surfaces of the crankshaft, connecting rods, and bearingsThe engine must be serviced within three hours of recovery to avoid costly repairs Proceed as follows1Remove engine cover and rinse powerhead with fresh water2Disconnect the connector between power pack(s) and charge coilDisconnect spark plug leads and remove spark plugs
INote To remove or attach .Ieads, pull off or push on with slight counterclockwise tWISt3Disconnect fuel line from engineDrain and clean all fuel lines and fuel tank4Place engine in horizontal position (spark plug openings down) and work out all of the water by slowly rotating flywheel approximately 20 times or until there are no signs of water 5Drain carburetorsplace engine in upright position and remove carburetors for disassembly and draining6Starters, electrical connectors and all electrical equipment should be completely disassembled, cleaned, flushed with fresh water, treated with water displacing electrical spray, and thoroughly dried before assembly 7Inject outboard lubricant into spark plug holes8Reassemble parts you removed and disconnectedStart engine (follow starting instructions) and run 1 hour using the "breakin" fueloil mixtureRun the engine on "break-in" fueloil mixture for approximately three hours after servicingSee Break-in Procedure in this section