Owner`s manual

In addition to the 35A circuit breaker, the engines are equipped with additional component overload
protection, including a 15A ATO 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
authorized MasterCraft service department for inspection and repair.
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 specifically routed to eliminate problems related to engine heat and spray
or immersion in liquids. Electrical problems may result if wiring is moved from its original position!
Courtesy Lights Switch
(All Models)
is switch is a two-position switch that activates the courtesy lights within the boat. Turning the switch
upwards will turn the lights ON, and turning it downwards will turn the lights OFF.
Note that on boats equipped with the optional underwater lights (transom below the water line), this same
switch operates those lights. Also note that the underwater lights should never be operated unless the
boat is in the water. Even though these are L.E.D. lights, they generate some heat and require the cool-
ing effect of the water to avoid premature burn-out of the bulb.
Cruise Control Gauge
(Where Equipped)
Boats equipped with cruise control systems come with short manuals that describe how to operate and
maintain the cruise control system. Refer to the appropriate manual prior to operation of the system. Boats
featuring the “simple” cruise system function the same as an automobile with an ON/OFF switch and +/- to
increase or decrease speed. For boats equipped with dual engines, see also the Engine Synchronizing Switch in-
structions of this section. e engine synchronizing switch must be ON for the cruise to work on dual-engine
boats. Also review the operating instructions from the cruise control provider.
Display Selector Switch
(ProStar 190, ProStar 197, X-7)
On the models equipped with the Multi-Function gauge, this switch allows the operator to toggle between func-
tions.
Dual Battery Operation Switch
(All MariStar Models and Similar X Series, X-Star, CSX 220, CSX 265)
MariStar and X-Star: For normal operation the battery switch should be placed in the ON position. is allows
the engine and all accessories to receive power. e engine will recharge both batteries with the switch ON.
For transportation and storage, the battery switch should be placed in the OFF position to allow both batter-
ies to be isolated from all circuits.
Note: e switch knob may be removed when it is in the OFF position. is is a security feature.
If the engine will not start because the battery is discharged, the engine may be started from the house bat
-
tery by placing the switch in the COMBINE BATTERIES position. After the engine is started, the switch should be
returned to the ON position and NOT allowed to remain in the COMBINE Batteries mode.
MariStar 280 and X-80: For normal operation the port and starboard battery switches should be placed in
the ON position. e COMBINE BATTERIES switch should remain OFF. e engine and all accessories will re-
ceive power.
Note: e port battery is a dedicated start battery for the port engine and the starboard battery provides
starting current of the starboard engine while also providing power for accessory circuits. For transportation
and storage, all battery switches should be placed in the OFF position to isolate both batteries from all cir-
cuits.
NOTE: e switch knob may be removed when it is in the OFF position. is is a security feature.
If either battery becomes discharged, start the engine with the remaining charged battery and THEN set
the COMBINE BATTERIES switch to ON. e remaining engine may then be started. Return the COMBINE
BATTERIES switch to OFF. e COMBINE BATTERIES switch should NOT be left ON.
2011 Owners Manual...Instrument Gauges and Switches...Page 5-4