1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 289Get this manual
3 DR4031
rn 3ConnectConnect voltmeter negative lead to starter starter voltmeter positive lead to starter solenoid, lead terminalmotor
terminalTurn key switch to STARTVoltage reading should not exceed 0.2 volt
rn 4Connect voltmeter positive lead to battery negative lead common powerhead ground screwConnect voltmeter negative