1994 Johnson Evinrude "ER" 90 LV 120 thru 140, 185 thru 225, 250, 300 Service Manual P/N 500612, Page 366Get this manual

1994 Johnson Evinrude "ER" 90 LV 120 thru 140, 185 thru 225, 250, 300 Service Manual P/N 500612, Page 366

Cranking Discharge Method 1Check battery voltage If voltage is greater than 12.5 volts, go to Step If voltage is less than
35 ampsAs you continue to run the engine at 4500 RPM, the voltage should stabilize at approximately 14.5 volts and the alternator
output should begin to decreaseIf the engine's ammeter doesn't indicate the above, check stator condition before replacing
rectifierregulatorTachometer CircuitV4 1Ifthe VRO fIno oil" warning signal is in question, or ifthe boat's tachometer is
not working, test the tachometer circuit2Verify that all wiring and Amphenol connectors are in good condition3Set peak-reading
voltmeter to "POS" and "50"4Attach the meter red lead to terminal strip gray terminal and meter black lead to clean engine
ground71 5With the engine running at 1000 RPM, the voltmeter should indicate volts If the voltmeter shows specified voltage,