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Propulsion System
Some or all of the following gauges may be
present.
Tachometer
The tachometers display the speed of the engines
in revolutions per minute (RPM). This speed is
not the boat speed or necessarily the speed of
the propeller.
NEVER EXCEED THE MAXIMUM RECOMMENDED OPERATION
RPM OF THE ENGINES. MAINTAINING MAXIMUM OR CLOSE
TO MAXIMUM RPM FOR EXTENDED PERIODS CAN REDUCE
THE LIFE OF THE ENGINES.
Speedometer
Speedometers can indicate boat speed via the
engine pickup or an optional GPS or depth sounder
triducer, if these options are installed in your
boat. Refer to the engine display and electronics
operating manuals for more information on the
speedometer options available for your boat.
Temperature Gauge
The temperature gauge indicates the temperature
of the engine cooling system. A sudden increase
in the temperature could signal a blocked cooling
passage or a water pump malfunction.
CONTINUED OPERATION OF AN OVERHEATED ENGINE
CAN RESULT IN ENGINE SEIZURE. IF AN UNUSUALLY HIGH
TEMPERATURE READING OCCURS, SHUT THE ENGINE OFF
IMMEDIATELY. THEN INVESTIGATE AND CORRECT THE
PROBLEM
Oil Pressure Gauge
The oil pressure gauge monitors the engine lubri-
cation system pressure. The oil pressure indicated
when the engine is new is usually the reference
for normal oil pressure for that engine. A drop
in oil pressure is a possible indication of oil pump
problems, a leak or fuel diluted oil.
Fuel Gauge
The fuel gauge indicates the amount of fuel in
the fuel tank. This gauge is merely a relative
indication of the available fuel supply and not a
calibrated instrument.
Voltmeter
The voltmeter displays the voltage for the battery
and the charging system. The normal voltage is
11 to 12.5 volts with the engines o, and 13 to
14.5 volts with the engines running.
Hour Meter
The hour meter keeps a record of the operating
time for each engine.
Tilt/Trim Gauge
The tilt/trim gauge monitors the position of the
engines. The upper range of the gauge indicates
the tilt, which is used for trailering and shallow
water operation. The lower range indicates the
trim position. This is the range used to adjust
the hull angle while operating your boat on plane.
Refer to Chapter 2 and the engine owner’s manual
for more information on the operation of the power
tilt and trim.
Depth Gauge (Optional)
The Depth gauge indicates the depth of the water
below the bottom of the boat. The gauge is
equipped with a shallow water alarm. The alarm
will sound at a depth preset by the operator.
Fuel Management (Optional)
Fuel management systems are optional and could
be installed on your boat as part of the engine
monitoring system. On most engines, the fuel
management gauge is built into the digital display
and can monitor miles per gallon, total gallons
used and total gallons remaining.
If you have a fuel management system installed on
your boat, refer to the engine or fuel management
manual for information on that system.
Engine Alarm
Outboard engines are equipped with an audible
alarm system mounted in the helm area that moni-
tors selected critical engine systems. The alarm
will sound if one of these systems begins to fail.
Refer to the engine owner’s manual for information
on the alarms installed with your engine.
If an engine alarm sounds, immediately shut o
the engine, if safe to do so, until the problem is
found and corrected.
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