2005
MASTERCRAFT
OWNERS
MANUAL
–
PAGE
6-1
CONTROLS
INDICATORS
&
> >
While the Guide to Individual Models pages provide specific information regarding the location of individual gauges
and switches for each MasterCraft model, there is some general information about various gauges that has a direct impact
in the operation and maintenance of your boat. The following includes information that should be reviewed and recalled on
a regular basis.
MULTI-FUNCTION
GAUGE
This gauge provides several func-
tions of interest and support to the
boater. As a tachometer, it indicates
the engine speed in crankshaft revo-
lutions per minute (RPM). Propeller
shaft RPM is the same as the engine
rotation except for boats equipped
with the Power Slot 1.5:1 ratio pack-
age or a V-drive gear, in which case
propeller shaft RPM is less than that of the engine RPM.
Toggle to the hourmeter and it registers the accumulated
engine operating time. Use the hourmeter to keep accurate
logs for scheduled maintenance. Replacing the computer
(known as the MMDC) will erase the hours. It counts hours
only when the engine is above 300 RPM. When equipped with
a revision C MMDC, 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 seconds.When
promoted, select English or metric display. Wait an additional
three 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.
SPEEDOMETER
The speedometer indicates the
forward speed of the boat in miles
per hour (unless your boat is
equipped with the kilometers per hour
available in the European Package).
To calibrate the speedometer you
need an accurately measured course
of 850 feet and a certified stopwatch
accurate to within one-thousandth
of a second. To calibrate to AWSA official-tournament rules:
• Approach the course at an indicated 36 miles per hour (MPH).
Making Use of the Multi-Function Gauge
In addition to the displays noted to the left, the multi-function gauge
also displays several alarms. The following messages will be displayed if
an alarm occurs:
VOLT = Below 11.5 volts
OIL = Oil is below 4 p.s.i. when the R.P.M. is below 1000 R.P.M. or the
oil pressure is below 10 p.s.i. and above 1000 R.P.M.
TEMP = High engine temperature alarm
TRAN = Transmission alarm
The
hourmeter
displays the boat hours and is stored in the engine’s com-
puter. Replacing the computer (known as an MMDC) will erase the hours. It counts
hours only when the engine is above 300 R.P.M. When equipped with a revision
C MMDC, 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 sec-
onds. When prompted, select English or metric display. Wait an additional three
seconds and the display will return to normal operation.
The
clock
can be adjusted by depressing the gauge selection display
button when the clock is displayed. After three seconds the colon will stop
flashing and the
hours
are adjusted by pressing
down,
while
minutes
are
adjusted by pressing
up.
After three additional seconds the clock will return
to normal operation.
Lake temperature
is also standard on the gauge. This comes from the
paddle wheel located under the boat. If the sensor becomes open or shorts-
out to the battery, it will read 32
0
F. If the sensor is shorted to ground it will
read 150
0
F. The temperature is also where the
SELF TEST
is located. With the
lake temperature displayed, hold down the gauge selection display button
for three seconds or until the self test has started. During the left 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 sweeps the system
returns to normal.
Hold the speed steady and have an observer check the course
time with a stopwatch.
•
If the course time is between 15.88 and 16.28 seconds, no
adjustments are necessary.
•
If the course time is not within tolerance, press up or down
on the calibration rocker switch to adjust the calibration.
