1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, Page 303Get this manual
Running Test, Alternator Output c:J Disconnect battery cables before proceeding with this
N check1Disconnect the rectifier red lead 2Wire 0-40 amp ammeter in series with the rectifier red lead and the wiring harness red lead
!Illllfltl[ I1000 2000 3000 4000 5000 6000
ill coming in contact with engine ground while the engine is
3The engine's battery should not be fully charged when beginning this testConnect the battery cables and run theengine in test tankRefer to the output curves to determine the correct output-to-RPM ratio for your engine If there is no output or the output is not correct, refer to the stator and rectifier ohmmeter tests in this section