Mercury 225 3.0 Litre, Manual

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90-10128R40
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FEATURES & CONTROLS
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WARNING SYSTEM
Warning Horn
Function Sound Description
Cooling System
Problem Continuous Engine Guardian System is activated.
Power limit will vary with level of over-
heat. 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 in-
termittent, stop engine and check water
intake holes for obstruction. The Guard-
ian system must be RESET before en-
gine 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. Refer to Fuel
and Oil Section.
Oil Pump Failure Continuous Engine Guardian System is activated.
Power 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 allow-
able range. If the overspeed condition
continues, the Engine Guardian Sys-
tem will place the engine in power re-
duction. The Guardian system must be
RESET before engine can resume full
power. Moving throttle lever back to
idle resets the system. Engine over-
speed indicates a condition that should
be corrected. Overspeed could be
caused by incorrect propeller pitch, en-
gine height, trim angle, etc.
Sensor out of Range
Continuous
Engine Guardian System is activated.
Power limit may activate at full throttle
speed.
Intermittent
Beep
Engine Guardian System is activated.
Power limit may restrict engine speed
to idle.
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WARNING SYSTEM
ENGINE GUARDIAN SYSTEM
The Engine Guardian System monitors the critical sensors on the engine for any
early indications of problems. The system will respond to a problem by emitting a
continuous beep and/or reducing engine power in order to provide engine
protection.
If Guardian System has been activated, the system must be RESET before the
engine will operate at higher speeds. Moving throttle lever back to idle position
resets the system.
SMARTCRAFT PRODUCT
A Mercury SmartCraft System instrument package can be purchased for this
outboard. A few functions some of the instrument packages will display are engine
rpm, coolant temp, 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.
Refer to the Mercury Smartcraft Operator’s Supplement provided with the
outboard for the warning functions monitored on your outboard and basic
operation of the Smartcraft Instrument package.
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a
c
b
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POWER TRIM AND TILT
Your outboard has a trim/tilt control called “Power Trim.” This enables the operator
to easily adjust the position of the outboard by pressing the trim switch (a). Moving
the outboard in closer to the boat transom is called trimming “in” or “down.” Moving
the outboard further away from the boat transom is called trimming “out” or “up.”
The term “trim” generally refers to the adjustment of the outboard within the first
205 range of travel (b). This is the range used while operating your boat on plane.
The term “tilt” is generally used when referring to adjusting the outboard further up
out of the water (c). With the engine turned off, the outboard can be tilted out of the
water. At low idle speed, the outboard can also be tilted up past the trim range to
permit, for example, shallow water operation.
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POWER TRIM OPERATION
With most boats, operating around the middle of the “trim” range will give
satisfactory results. However, to take full advantage of the trimming capability
there may be times when you choose to trim your outboard all the way in or out.
Along with an improvement in some performance aspects comes a greater
responsibility for the operator, and this is being aware of some potential control
hazards.
The most significant control hazard is a pull or “torque” that can be felt on the
steering wheel or tiller handle. This steering torque results from the outboard being
trimmed so that the propeller shaft is not parallel to the water surface.
WARNING
Avoid possible serious injury or death. When the outboard is trimmed in
or out beyond a neutral steering condition, a pull on the steering wheel
or tiller handle in either direction may result. Failure to keep a continuous
firm grip on the steering wheel or tiller handle when this condition exists
can result in loss of boat control as the outboard can turn freely. The boat
can now “spin out” or go into a very tight maximum turn which, if unex-
pected, can result in occupants being thrown within the boat or out of the
boat.
Consider the following lists carefully.
Trimming In or Down Can:
1. Lower the bow.
2. Result in quicker planing off, especially with a heavy load or a stern heavy boat.
3. Generally improve the ride in choppy water.
4. Increase steering torque or pull to the right (with the normal right hand rotation
propeller).
5. In excess, lower the bow of some boats to a point at which they begin to plow
with their bow in the water while on plane. This can result in an unexpected turn
in either direction called “bow steering” or “over steering” if any turn is
attempted, or if a significant wave is encountered.