1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 223Get this manual
3 Connect voltmeter positive lead to starter solenoid, starter lead terminalConnect voltmeter negative lead to starter motor terminalTurn key switch to start engineVoltage reading should not exceed 0.2 volt4Connect voltmeter positive lead to battery negative lead common powerhead ground screw Connect voltmeter negative lead to battery negative postTurn key switch to start engineVoltage reading should not exceed .3 volt