1991 Johnson Evinrude EI 60 Loop V Models 150, 175 outboards Service Manual, Page 222Get this manual
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Key Switch Check
Ohmmeter or Continuity Light
[TI 1Disconnect battery leads and leads at the key switch2With key switch in OFF position, connect continuity light or meter leads between key switch "BATT" and "A" terminalsLight or meter should not show continuity
continuity
switch to ON positionLight or meter should show
0 stillTurn keycontinuitySTART positionLight or meter should 4show switch to
5With key held in START position, transfer lead from "A" terminal to "S" terminalLight or meter should still show continuity6Transfer leads to "M" terminalsLight or meter should not show continuity to START or ON positions