2008 MasterCraft Owners Manual Page 5-5
Multi-Function Gauge
(ProStar 190, ProStar 197, X-7, X-1 models only)
This gauge provides several functions of interest and sup-
port to the boater. As a
tachometer,
it indicates the engine
speed in crankshaft revolutions per minute (RPM).
As you toggle to the
hourmeter,
it registers
the accumulated engine
operating time. Use the
hourmeter to keep ac-
curate logs for scheduled
maintenance. (See also
the
Maintenance Section
and
Service Log
.) Replac-
ing the computer (known as the MMDC) will erase the
registered hours. The hourmeter counts hours only when
the engine is above 300 rpm.
The option exists to change the display to metric from the
hours screen. This is done by holding down the gauge
selection display button for three (3) seconds. When
prompted, select English or metric display. Wait an ad-
ditional three (3) seconds and the display will return to
normal operation.
Toggle to the
air temperature gauge
(optional)
to get
an approximate 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 se-
lection display button when the clock is displayed. After
three (3) seconds the colon will stop flashing. The hours
are adjusted by pressing the button down, while minutes
are adjusted by pressing up. After 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. The following mes-
sages will be displayed if an alarm occurs:
VOLT
=
Voltage falls below 11.5 volts.
This 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.
This 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.
This message
will occur 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.
This 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. This 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. The 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.
After two (2) sweeps the system will return to normal.
Speedometer
The speedometer indicates
the forward speed of the
boat in miles per hour (un-
less the boat is equipped
with a speedometer that
measures kilometers per
hour, which is available
in the optional European
package.)
To calibrate the speed-
ometer, you need an ac-
curately measured course
of 850 feet and a certified
stopwatch, which is ac-
curate to within one-hundredths (.01) of a second. (This
can be done with GPS, when equipped.) To calibrate to
A.W.S.A. official tournament rules:
• Approach the course at 36 miles per hour (MPH) as
indicated on the speedometer. Hold the speed steady
and have an observer check the course time with a
stopwatch.
