1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, Page 116Get this manual
Stop Circuit
IA1 rl The stop buttonkey switchand emergency stop switch are connected to the ignition module through the
engine wiring harnessWhen activated, these switches direct the ignition module output to ground, stopping the ignition system
steering contains combination stop switch emergency stop device When the clip and lanyard assembly is removed, the emergency stop device is in the STOP position When the clip and lanyard assembly is installed, the emergency stop device is in the RUN position To stop the engine when the clip and lanyard assembly is in place, press the stop button inward until the engine stops