1990 Johnson Evinrude "ES" 40 thru 55 Service Repair Manual, P/N 507872, Page 251Get this manual

1990 Johnson Evinrude "ES" 40 thru 55 Service Repair Manual, P/N 507872, Page 251

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Solenoid Check 1 Note 1
a 0-50 amp ammeter in series with heavy jumper between the battery "+" terminal and the starter "+" terminal
3 Attach or hold vibration tachometer, such as Frahm Re