Mercury Racing HP565, Manual, Page: 55 / 151

OPERATION
eng
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Instrumentation
Mercury Racing requires that the following critical engine
functions be monitored:
• Oil pressure
• Engine RPM
• Water temperature
• System voltage
• Guardian fault messages
The use of SmartCraft instrumentation will display all of the
above critical engine functions as well as others not listed.
SmartCraft instrumentation will also display information
about power train sensor faults and Guardian activation.
Warning System
The engine's warning system includes an audible alert consisting
of a horn located in the helm harness, and the Engine Guardian
system. Do not attempt to alter or disable the warning system in
any way.
ENGINE GUARDIAN SYSTEM
The Engine Guardian system monitors sensors on the engine for
early indications of problems. If a sensor indicates a fault, the
system responds to the problem by sounding the horn and,
depending on the type of fault, may reduce engine power to
provide engine protection. Refer to the VesselView manual to
display the details. When the key switch is turned "ON", the
warning horn beeps once to verify horn operation.
Fault Type and Related Warning Signal
If there are two stages for a warning fault, Stage 1 occurs first. If
a fault remains active, Stage 2 becomes active. If multiple faults
are active, the operator is warned of the more severe fault first. If
another fault with the same severity occurs during Stage 2, the
horn will return to Stage 1 signalling. Monitor the VesselView for
warning messages.
• Caution: 1 second on and 1 second off for 6 cycles