1992 Johnson Evinrude "EN" 60 deg Loop V Service Manual, P/N 508146, Page 249Get this manual

1992 Johnson Evinrude "EN" 60 deg Loop V Service Manual, P/N 508146, Page 249

Cranking Discharge Method 1Check battery voltage If voltage is greater than 12.5 volts, go to Step If voltage is less than 12.5 volts, go to Step 32Twist the spark plug leads and remove them from the spark plugsCrank the engine in short bursts until battery voltage is less than 12.5 voltsCheck battery voltage with key OFF3Disconnect the battery cables4Connect 0-40 amp ammeter in series between the rectifier regulator red lead and the battery side of the starter solenoid5Reconnect the battery cables and the spark plug leadsThe rectifierregulator requires battery voltage from the purple lead to operateBefore proceeding, separate the rectifierregulator purple lead bullet connectorVerify battery voltage at the engine harness connector when key is ONReconnect the purple lead bullet connector6Start the engine and run it at approximately 4500 RPMThe ammeter should indicate nearly full output35 ampsWhile continuing to run at 4500 RPM, the voltage should stabilize at about 14.5 volts and the alternator output should begin to decrease your results vary, check the stator's condition before replacing the rectifierregulator Tachometer Circuit If the VRO "no oil" warning signal is in question, or if the boat's tachometer is not working, test the tachometer circuitA C.Dadapter box such as Stevens model SA-6 or Merc-O- Tronic model 55-861 and peak reading voltmeter will be needed for the following tests1Remove the rectifierregulator cover and the air silencer cover2Verify that all wiring and Amphenol connectors are in good condition3Separate the 4-wire VRO connector and plug both ends into the adapterSet the voltmeter to "POS" and "50"Turn all the adapter switches to ON4Place the meter red lead in jack "c" and the meter black lead to clean engine ground