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Propulsion System
Some or all of the following gauges may be
present.
Tachometers
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.
The tachometer display also contains the engine
trim meters, oil pressure gauge, fuel gauge, water
temperature and the overheat warning indicator.
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
Yamaha 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 gauge and elec-
tronics operating manuals for more information on
the speedometer options available for your boat.
Overheat Warning Indicator
The temperature warning indicates that the tem-
perature of the engine is too high. A sudden
increase in the temperature could indicate an
obstructed water inlet or an impeller failure. On
Yamaha engines the overheat warning indicator
is built into the LCD display. It will start to blink
and sound an alarm if the engine temperature is
too high.
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
Fuel Gauge
The fuel gauge indicates the amount of fuel in
the fuel tanks. On boats equipped with Yamaha
Command Link display, the fuel gauge is built
into the LCD Display. The fuel indicator on the
display will begin to blink if the fuel in the tank
drops too low. The system can monitor up to 4
fuel or water tanks.
Voltmeters
The voltmeters display the voltage for the bat-
tery and the charging system for each engine.
The normal voltage is 12 to 12.5 volts with the
engines o and 13 to 14.5 volts with the engines
running. The Yamaha engine voltmeter is built
into the LCD display. It will begin to blink if the
voltage in the battery drops too low.
Hour Meters
The hour meters keep a record of the operating
time for each engine.
Engine Tilt/Trim Gauges
The tilt/trim gauges monitor the position of each
outboard engine. The upper range of the gauge
indicates the tilt, which is used for trailering and
shallow water operation. The lower range indi-
cates the trim position. This is the range used to
adjust the hull angle while operating your boat
on plane. The Yamaha engine trim indicator is
built into the LCD display. Refer to the engine
and Command Link display owner’s manuals for
more information on the operation of the outboard
power tilt and trim.
Engine Alarms
All outboards are equipped with an audible alarm
system mounted in the helm area that monitors
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 engines.
IF THE ENGINE ALARM SOUNDS, IMMEDIATELY SHUT
OFF THE ENGINE UNTIL THE PROBLEM IS FOUND AND
CORRECTED.
Fuel Management
Fuel management systems are standard equip-
ment with most large outboard engines. On
Yamaha engines, the fuel management gauge
is built into the Command Link display and can
monitor miles per gallon, total gallons used and
total gallons remaining.
Refer to the engine or fuel management manual
for detailed information on that system.
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