2013 MasterCraft Owners Manual • Electronic Instrumentation • Page 3-11
• Approachthecourseat36milesperhour(MPH)asindicatedonthespeedometer.
Hold the speed steady and have an observer check the course time with a stopwatch.
• Ifthecoursetimeisbetween15.88and16.28seconds,noadjustmentsareneces-
sary.
• Ifthecoursetimeisnotwithinthattolerancerange,pressupordownonthecalibra-
tion rocker switch to adjust the speedometer’s speed interpretation.
Tachometer
(All Models)
On some boats, a separate tachometer gauge is
found. The tachometer indicates the engine speed
in crankshaft revolutions per minute (RPM). See
also, the Video Display Gauge section for information
regarding the lower portion of the gauge.
Temperature Gauge
(All Models)
The temperature gauge indicates the water tem-
perature inside
the engine’s cooling system as measured in degrees
Fahrenheit. The normal operating temperature will
range from 140 degrees Fahrenheit to 190 degrees
Fahrenheit. Engines with electronic fuel injection also
have a control circuit inside the engine control module
that will cause the engine to run at reduced speeds if
the module senses that the engine is running too hot. If
you notice that your speed has reduced during nor-
mal operation, but you have not manually slowed the
throttle, monitor your temperature gauge. If the gauge
indicates excessive temperatures during operation,
slow down immediately and turn o the engine. This
indicates an engine problem that needs to be checked
by the dealer!
Continuing to operate the boat while the
temperature is above normal operating pa-
rameters may cause serious damage to your
engine. Damage to your engine resulting from
operating the engine in an overheated condi-
tion can be costly to repair. Such damage is not covered by your warranty!
Voltmeter
(All Models)
The voltmeter registers the electrical activity necessary to operate your boat. If the
battery (or batteries, in boat models requiring two
[2]) is low or non-functional, or if various electri-
cal items on the boat, such as stereo equipment,
are draining the battery(ies) and impacting the
boat’s ability to function properly, the voltmeter will
likely be the first gauge to indicate that you have
an electrical problem. The voltmeter cannot tell
you which battery is draining on boats with two (2)
batteries, but rather functions as a general alarm to
alert boaters regarding potential issues. On boats
equipped with two (2) batteries, the alarm indicates
severe drain on the engine starting battery. To de-
termine which battery is the engine starting battery,
read the markings on the battery cables.
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