1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 321Get this manual
Key Switch Check
Ohmmeter
1Disconnect battery leads and leads at the key switch
f8l 2With key switch in "OFF" position, connect continuity light or meter leads between key switch "BATT" and "A" terminalsLight or meter should not show continuityigJ 3Turn key show continuityto "ON" positionLight or meter should
f101 4Turn key switch to "START" positionLight or meter should still show continuityi111 5With key held in "START" position, transfer lead from "A" terminal to "S" terminalLight or meter should still show continuity
Transfer leads to "M" terminalsLight or meter should not show continuity in "START" or "ON" positionsshow continuity