1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 84Get this manual
6Test the "no oil" warning circuit: Connect shop tank with 50: fueloil mix to the fuel inlet fitting Remove the protective cap from the oil inlet fitting Start the engine and run it at 1000 RPM, in gear After the residual oil is exhausted from the oil line, the "no oil" circuit should activate the warning horn The signal should be an urgent off12
second on,