Mercury 200 Sport-Jet Operation & Maintenance Manual page 44

1. Continuous six second beep: Indicates a critical engine condition.
Depending on the condition, the Engine Guardian system may engage
and protect the engine by limiting power. You should return to port
immediately and contact your servicing dealer.
2. Intermittent short beeps for six seconds: Indicates a noncritical engine
condition. This condition does not require immediate attention. You may
continue using your boat. Depending on the nature of the problem,
however, the engine's power may be limited by the Engine Guardian
system to protect the engine (refer to Engine Guardian System
following). You should contact your servicing dealer at your earliest
convenience.
It is important to note that in either of the above scenarios, the horn will only
sound one time. If you key the engine off and restart it, the horn will sound
again, one time, if the fault is still present. For visual display of the specific
engine functions and additional engine data, refer to SmartCraft Product
information, following.
A few of the noncritical conditions indicated by the intermittent short beeps for
six seconds can be corrected by the operator. These operator correctable
conditions are as follows:
• Water in the engine‑mounted fuel filter. Refer to Maintenance ‑ Fuel
System.
• Cooling system (water pressure or engine temperature) problem. Stop the
engine and check the water intake holes in the lower unit for obstruction.
• Low engine oil level. Refer to Fuel and Oil ‑ Filling Remote Oil Tank.
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
the engine is protected. The system will respond to a problem by sounding the
warning horn for six seconds or reducing engine power in order to provide
engine protection.
If Engine Guardian has been activated, reduce the engine speed. Moving the
throttle lever back to the idle position will reset the Engine Guardian system. If
the Engine Guardian system has determined that the reset has not corrected
the problem, Engine Guardian will remain activated, limiting the throttle. The
problem must be identified and corrected before Engine Guardian will allow the
engine to reach a normal operating speed.
OVERSPEED REV LIMIT
The overspeed rev limit is set at an RPM greater than the operating range. If
the engine is operated at an RPM greater than or equal to the overspeed limit,
the engine electronics will not allow the engine to maintain the power requested
by the operator. Refer to General Information ‑ Specifications to determine
the RPM limit.
FEATURES AND CONTROLS
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