1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 96Get this manual
Warning Signals
Push fuel hose off fuel fittingsdon't pullIf pushing won't separate hose and fitting, carefully cut the hose along its side and peel it back to avoid damaging the fittings"low Oil" Signal
A complete procedure for testing the VRol "low oi l" circuit can be found in VROllnstaliation Recommendations, this section"No Oil" Signal 1Connect shop tank with 50: fueloil mixture to the fuel inlet fitting2Carefully, cut the oil supply hose from the pump oil inlet fitting3Start the engine and run it at 1000 RPM, in gear4After the residual oil is exhausted from the pump, theno oil" circuit should activate the warning horn The horn should sound 112 second on, 12 second off5If the horn does not sound within ten minutes, check for battery voltage at purple lead, VRol connector terminalD", when engine is runningand check the tachometer circuitRefer to RectifierRegulator Tests, Section 86If battery voltage is present at the pump, the tachometer circuit is okay, and the warning horn circuit is okayreplace the VRol pump