1993 Johnson Evinrude "ET" 60 thru 70 Service Manual, P/N 508284, Page 249Get this manual
RectifierRegulator Tests Variable Load Tests To test the operation of the rectifierregulator, you must be able to run the engine continuously at approximately 4500 RPM, either in test tank, on marine dynamometer, or on the boatThe test consists of monitoring the system's response to partially discharged batteryTwo methods for performing this test are described belowVariable Load High Rate Discharge Tester
IN=l The rectifierregulator requires battery voltage on the pur1Disconnect battery cables
pie lead to operateBefore proceeding, verify battery voltage at terminal strip purple leads when key is ON
rv 2Connect tored lead and the batteryseries of the starter 40 amp ammeter in between the rectifierregulator side
solenoid3Reconnect the engine's battery cables
rv 4Following the (carbon pile) across the battery terminals.manufacturer's directions, connect the varia ble load tester