1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 62Get 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 System Check gauge "NO OIL" light should turn on and the warning horn should sound for ten seconds If the light does turn on, or the horn does not sound for ten seconds, check the warning system as described in Section 7, System Check Engine Monitor INote The
"LOW OIL" and "NO OIL" warning circuits alert the systemYou must operator to possible problems with the be sure they are functional before continuingIf they are not functional, serious powerhead damage might occur
7Complete the installation by connecting the oil supply hose to he engine 's oil inlet fitting