Service manual

90-898303
4-37
Guardian System Activation
Warning Horn
Function Sound Description
Cooling System
Problem
Continuous Engine Guardian System is activated. Power
limit will very with level of overheat. Shift
outboard into neutral and check for a steady
stream of water coming out of the water pump
indicator hole. If no water is coming out of the
water pump indicator hole or flow is
intermittent, stop engine and check water
intake holes for obstruction. The Guardian
system must be RESET before engine will
operate at higher speeds. Moving throttle lever
back to idle resets the system.
Oil Level Is Critically
Low
Continuous Engine Guardian System is activated. Power
limit will limit engine speed. The oil level is
critically low in the engine mounted oil reservoir
tank. Refill the engine mounted oil reservoir
tank along with the remote oil tank.
Oil Pump Failure Continuous Engine Guardian System is activated. Power
limit will limit engine speed. The warning horn is
activated if the oil pump should ever stop
functioning electrically. No lubricating oil is
being supplied to the engine.
Engine Overspeed Continuous The warning horn is activated any time engine
speed exceeds the maximum allowable RPM.
The system will limit the engine speed to within
the allowable range. If the overspeed condition
continues, the Engine Guardian System will
place the engine in power reduction. The
Guardian system must be RESET before
engine can resume full power. Moving throttle
lever back to idle resets the system. Engine
overspeed indicates a condition that should be
corrected. Overspeed could be caused by
incorrect propeller pitch, engine height, trim
angle, etc.
Continuous Engine Guardian System is activated. Power
limit may activate at full throttle speed.
Sensor out of Range
Intermittent Beep Engine Guardian System is activated. Power
limit may restrict engine speed to idle.