1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 232Get this manual
Runnin Test, Alternator OutputAll Models
INote Disconnect
battery cables before proceeding with this
1Remove the rectifier red lead from the terminal board or the rectifier Iregulator red lead from the battery side of the starter solenoid2Wire to 40 amp ammeter in series with the rectifier red lead and the wiring harness red lead or in series with the rectifier Iregulator red lead and the battery side of the starter solenoid
Htt1II.11111
1500 2500 3500 4500 5500