1993 Johnson Evinrude "ET" 90 degrees CV Service Manual, P/N 508285, Page 245Get this manual
Running Test, Alternator Output r:::-=J Disconnect battery cables before proceeding with this
N check1Remove the rectifier red lead from the terminal board or the rectifierregulator red lead from the battery side of the starter solenoid 2Wire 0-40 amp ammeter in series with the rectifier red lead and the wiring harness red lead or in series with the rectifier regulator red lead and the battery side of the starter solenoid
1500 2500 3500 4500 5500
ill coming in contact with engine ground while the engine is
runningContact can cause arcing
'" Guard against any red wire, its terminals, or the ammeter
this testConnect the battery cables and run the engine in test tankRefer to the output curves to determine the correct output-to-RPM ratio for your engine Unregulated systems: If there is no output, or the output is not correct, refer to the stator and rectifier ohmmeter tests in this section Regulated systems: If there is no output, or the output is not correct, refer to the stator ohmmeter and rectifier regulator running tests in this section