1995 Johnson Evinrude "EO" 9.9 thru 30, 2-Cylinder Service Manual, P/N 503146, Page 304Get this manual
Starter System Voltage Drop Test
By making systematic check of the starter system, any component or electrical connection having excessive resistance can be located
ill and remove all spark plug leads
"" Avoid accidental starting of engine while servicing; twist
Clean and retighten, or replace, any connection, cable, or component having greater than specified voltage drop1sl 1Connect voltmeter positive lead to battery positive postConnect voltmeter negative lead to starter solenoid positive terminalTurn key switch to START to crank engineVoltage reading should not exceed 0.3 voltIn Step 2, connect the voltmeter leads only while the engine is crankingor damage to the voltmeter can occur2Connect voltmeter negative lead to the starter side of the starter solenoid terminalWhile cranking engine, connect voltmeter positive lead to starter solenoid opposite terminalVoltage reading should not exceed 0.2 voltRemove voltmeter positive lead from starter solenoid and stop cranking engine