1993 Johnson Evinrude "ET" 60 thru 70 Service Manual, P/N 508284, Page 294Get this manual
Motor Test, No Load Securely fasten motor in suitable fixture before proceeding with this test1Use battery rated at 360 CCA (72 amp hrs) or higherThe battery must be fully chargedto specific gravity of 1.260 to 1.280 corrected to temperature of 80 (2]0 C)Refer to Battery Specifications, Electrical Section2Connect 0-50 amp ammeter in series with the battery's terminal, ammeter RED lead toward battery
rv 3Attach or hold vibration or mechanical tachometer to the motor while performing this testrv 4Monitorthe correct specifications for yourRefer to the chart motor RPM and current drawbelow for motor5The motor shaft must rotate clockwise, as viewed from the pump end, when battery "+" is applied to the BLUE leadf31 6The motor shaft must rotate counterclockwise, as viewed from the pump end, when battery "+" is applied tothe GREEN lead7If your test results vary, replace the motorDR2258