1993 Johnson Evinrude "ET" 90 degrees CV Service Manual, P/N 508285, Page 370Get this manual
Running Motors Too Fast (Overspeeding) "Too Fast" means faster than motor normally runs on the Boat Running Too Fast can happen when using Flushing Kit
running motor with the Wrong Test Wheel
Turn on water Before starting motor and Keep motor Speed below 2000 RPM with no load, motor will run Too Fast very easily and wear Ear Protectors
This may happen if motor runs Too Fast
Running Motors: Exhaust Fumes Exhaust Gases of running Motors contain Carbon Monoxide you can 't See it you can't Smell it you can't Taste it but It's There whenever motor Runs And It's Deadly! When you smell the Other gases in the Exhaust, You are inhaling Carbon MonoxideRun motors only in Well Ventilated areas