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Multi-Function Gauge
(ProStar 190, ProStar 197, X-7, X-1
models only)
is gauge provides several func-
tions of interest and support to the
boater. As a tachometer, it indicates
the engine speed in cranksha revo-
lutions per minute (RPM).
As you toggle to the hourmeter, it
registers the accumulated engine
operating time. Use the hourmeter
to keep accurate logs for scheduled maintenance. (See also the
Maintenance Section and Service Log.) Replacing the computer
(known as the MMDC) will erase the registered hours. e
hourmeter counts hours only when the engine is above 300 rpm.
e option exists to change the display to metric from the hours
screen. is is done by holding down the gauge selection display
button for three (3) seconds. When prompted, select English
or metric display. Wait an additional three (3) seconds and the
display will return to normal operation.
Toggle to the air temperature gauge (optional) to get an ap-
proximate reading of the ambient air temperature above the
water’s surface.
Toggle to the clock for the convenience of determining the time.
It can be adjusted by depressing the gauge selection display
button when the clock is displayed. Aer three (3) seconds the
colon will stop ashing. e hours are adjusted by pressing the
button down, while minutes are adjusted by pressing up. Aer
three (3) additional seconds the clock will return to normal
operation.
Alarms of the Multi-Function Gauge
In addition to the displays noted above, the multi-function
gauge also displays several alarms. e following messages will
be displayed if an alarm occurs:
VOLT = Voltage falls below 11.5 volts. is message indicates
that the battery has discharged to an extent that may
jeopardize engine cranking and starting if action is not
taken. Start the engine to at least idle, and allow the
battery to re-charge.
OIL = Oil pressure is below 4 p.s.i. when the RPM is below
1000 RPM or the oil pressure is below 10 p.s.i. and
above 1000 RPM. is message will occur only when
the engine is running. Stop the engine and check the
oil level as soon as this can be safely done.
TEMP = High engine temperature alarm. is message will oc-
cur only when the engine is running. If the engine does
not automatically reduce speed to the “limp home”
level, manually reduce speed and return to the dock as
soon as this can be safely done. It may be necessary to
shut down the engine and seek a tow to the dock.
TRAN = Transmission alarm.is message will occur only
when the engine is running. Stop the engine and
check the transmission oil level as soon as this can be
safely done.
While air temperature readings are an optional addition to the
gauge, the lake temperature reading is standard on the gauge.
is comes from the paddle wheel located under the boat. If
the sensor becomes open or shorts out in the line to the battery,
it will read 32 degrees F. If the sensor is shorted to the ground
wire, it will read 150 degrees F. e SELF TEST feature of the
multi-function gauge is located on the lake temperature gauge.
With the lake temperature displayed, hold down the gauge selec-
tion display button for three (3) seconds or until the self test has
started. During the self-test, all the segments on the display will
light up. Also during the self test, the gauges will re-set, go to
mid-scale and then to full-scale. Aer two (2) sweeps the system
will return to normal.
Navigation/Anchor Lights Switch
(All Models)
A three-position switch serves to activate
exterior lighting. Turning the switch in
the up position will activate bow and stern
lights, the middle position is OFF, and the
down position is for stern-only lighting.
Other Alarms
(All Models)
Sensors check the oil pressure, engine and transmission tem-
peratures. If the system detects readings outside the acceptable
range, the system shuts o the stereo and sounds the alarm for
a period of one (1) minute. is signals the need to return to
shore as soon as possible and seek assistance from your autho-
rized MasterCra dealer’s service department to diagnose and, if
necessary, repair the problem.
Refrigerator Switch
(MariStar 280, X-80, CSX 265, X-65)
is switch will run the refrigerator when
turned ON. e refrigerator runs o the
boat’s electrical and battery system. ere-
fore, care should be given to ensure that the
battery is not drained to such an extent that
the voltmeter alarm sounds.
Seat Heat Switches
(Optional All Models for Driver’s Seat;
Certain Models for Observer’s Seat)
A two-position switch allows heat to be
turned ON for the driver’s seat. In some
models, an optional observer seat heat
switch is available and will be found on the
deck below the observer seat cushion.
MasterCraft 2009 Owner’s Manual - Page 5-7