Mercury 40 FourStroke Maintenance And Installation Manual page 38

FEATURES AND CONTROLS
ENGINE GUARDIAN SYSTEM
The Engine Guardian System monitors the critical sensors on the engine for
any early indications of problems. Engine Guardian is functional whenever your
engine is operating, so you never have to be concerned about whether or not
you are protected. The system will respond to a problem by sounding the
warning horn for six seconds and/or reducing engine power in order to provide
engine protection.
If the Guardian System has been activated, reduce throttle speed. The problem
will need to be identified and corrected, if possible. The system must be reset
before the engine will operate at higher speeds. Moving the throttle lever back
to the idle position will reset the system.
SMARTCRAFT PRODUCT
A Mercury SmartCraft System instrument package can be purchased for this
outboard. A few of the functions the instrument package will display are engine
RPM, coolant temperature, oil pressure, water pressure, battery voltage, fuel
consumption, and engine operating hours.
The SmartCraft instrument package will also aid in Engine Guardian
diagnostics. The SmartCraft Instrument package will display critical engine
alarm data and potential problems.
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