1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Manual, Page 302Get this manual
High Voltage
M In some conditions, the key switch may be shorting (some
leakage) to the other terminals in the key switch, but will not show up with test light or an ohmmeterThis condition may be found by using condenser tester (leakage test) where voltage of approximately 500 volts is applied to the key switch terminalsWith all leads disconnected and the key switch in the "OFF" position, connect the black lead of the tester to one of the liM" terminals of the key switch1Attach the red lead of the test to the "8" terminal and apply leakage test2Repeat test by moving the red lead to each of the terminals and applying the leakage testThe meter will indicate if leakage is present3When applying test to other "M" terminal, turn key to the liON" position
Start Switch Ohmmeter CheckTE
Disconnect the two switch leads from the starter solenoidCalibrate ohmmeter on appropriate scaleConnect one meter lead to switch yellowred lead, the other meter lead to switch red leadDepress switchMeter should show: Low reading when the switch is depressed High reading when the switch is releasedReplace the start switch if your test results vary