1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 280Get this manual
Outboard Emergency Stop System and Persons Safety
the Emergency Stop system begins here at the Buckle
here in the ignition system on the power head
What's Most Important? The Emergency System
must STOP the engine when the emergency stop switch's cap is pulled from switch