1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 276Get this manual
Service Specifications
Model 9.930 0.27
Model 9.915 2030
Voltage 1212.4 1212.4
Amps (Maximum) 30
RPM 70009200 65007500
Battery Cable Extension
Minimum Recommended Gauge