1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 279Get this manual
Motor Test, No Load o Wit h'IS testSecurely fasten motor in suitable fixture before proceeding
1Use battery rated at 360 cold cranking amps or higher that is in good condition and fully charged to perform this test 2Connect 0-50 amp ammeter in series with the battery's terminal ammeter RED lead toward terminal
3 Attach or hold vibration or mechanical tachometer to the motor while performing this test 4Monitor motor RPM and current drawRefer to the chart below for the correct specifications for your motor
111 Viewed from the pump endthe motor shaft must rotate in a