battery box. There may also be a waterproof
fuse for the stereo amplifi er, where equipped. If
the boat’s accessories are not functional, check
and re-set breakers are necessary.
The engines are also equipped with breaker
systems. The main 50A circuit breaker protects
the engine electrical system and components
from overload.
If the engine will not turn over with the bat-
tery switch in the ON position, locate the red
breaker re-set button (labeled “50”) in the en-
gine. There will be an audible click. Try again
to start the engine. If the breaker trips again, the
engine requires attention. Take your boat imme-
diately to your dealer.
In addition to the 50A circuit breaker, the en-
gines are also equipped with additional compo-
nent overload protection, including a 15A ATO
2007 MasterCraft Owners Manual - Page 5-5
fuse for the fuel pump, a 15A ATO fuse for the injectors and a 15A ATO fuse for the ECM unit.
If you suspect that any of these fuses may not be operating as designed, you should take your boat to your dealer
for attention.
If during maintenance or inspection it becomes necessary to remove or re-position any of the engine’s wiring or wire
harness(es) verify that the wiring has been returned to its original position and that all harnesses are routed correctly
before attempting to use the boat again. If a wiring clip or retainer breaks, replace it immediately. Wiring is specifi cally
routed to eliminate problems related to engine heat and spray or immersion in liquids. Electrical problems can result if
wiring is moved from the original position!
Shift/Throttle Control
A one-hand, single-lever control operates as both a gear shifter and a throttle. The lever automatically locks in the
neutral position (straight up and down) for safety. The lever can be moved from neutral only by raising the lifter under
the ball knob. Shifting is accomplished by moving the lever into the fi rst 45 degrees of travel.
Moving the lever forward engages the running gear; moving it back from center puts the drive train into reverse. By
advancing the lever beyond 45 degrees you move from the shifting range to the throttle range.
Never attempt to shift without the engine running!
The shift mechanism of this control can be temporarily disengaged by engaging in the black button in the side of
the throttle handle. This allows the engine to increase RPM in neutral during warm-up.
Optional Cruise Control System
On boats equipped with a Cruise Control System, it is possible to review various functions by toggling to the cruise
control read-outs on the multi-function gauge explained earlier in this section. Note also that the throttle position must
always be greater than the speed set on the cruise control. For example, if the cruise was set at 35 mph but the throttle
position is equivalent to 25 mph, the boat will not reach 35. This is also true of the RPMs. Also, the cruise control cannot
be engaged when the boat is at idle speed.
System Start-Up:
When the ignition is turned on the cruise control system starts in the OFF mode. While it is in
OFF mode, the LCD display will show the current time.
RPM Set-Point Adjustment:
In order to adjust the RPM Set Point in OFF Mode, fi rst move the RPM/SPEED mode
selection switch to the RPM position. Using the +/- switch, select the desired Set Point. The RPM icon will illuminate and
the LCD will display the current Set Point. Briefl y pressing the +/- switch will increase or decrease the Set Point by 20
RPM. Holding the switch will increase or decrease by 100 RPM. The RPM Set Point is limited to a minimum of 1200
RPM and a maximum of 5000 RPM.
Speed Set Point Adjustment:
In order to adjust the Speed Set Point in OFF Mode, fi rst move the RPM/SPEED
Mode selection switch to the SPEED position. Use the +/- switch to select the desired Set Point. The SPEED icon will il-
luminate and the LCD will display the current Set Point. Brief presses of the +/- switch will increase or decrease the Set
Point by 0.2 mph. Holding the switch increases or decreases the Set Point by 1.0 mph. The Speed Set Point is limited
to a minimum of 5.0 mph and a maximum of 50 mph.
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