If the engine will not start because the battery is discharged, the en-
gine may be started from the house battery 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 star-
board battery switches should be placed in the ON position. The COM
-
BINE BATTERIES switch should remain OFF. The engine and all acces-
sories will receive power.
Note: The 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 circuits.
NOTE: The switch knob may be removed when it is in the OFF position.
This 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. The remaining engine may then be started. Return the
COMBINE BATTERIES switch to OFF. The COMBINE BATTERIES
switch should NOT be left ON.
CSX 220 and 265: The CSX 220 and CSX 265 are equipped with dual
batteries. One battery is reserved to provide engine-starting power and
the other provides power for all electrical accessories. These batteries
are located under the starboard rear seat cushion. To facilitate access,
the batteries are mounted on a sliding tray, which is secured with a pin.
Remove the pin to slide the tray forward for battery maintenance.
Outside this compartment, located on the side of the deck under
the starboard seat is the battery switch box. For normal operation
of the boat, the switch should be set to ON. For transportation and
storage, the switch should be moved to OFF. In the event of a failure
of the starter battery, the two batteries may be combined to provide
additional power to start the engine. This can be done by setting the
battery switch to COMBINE BATTERIES and starting the engine as
normal. After the engine is started, the switch should be returned to
the ON position.
The battery charger inlet connector is also located in the battery
switch box. Please see information provided by the charger manufacturer.
Battery chargers installed by MasterCraft are of the charger/maintainer
variety.Thechargermaybeleftconnectedtothebatteriesindenitely.
Engine Emergency
Safety Stop Switch
(All Models)
The engine emergency safety stop switch,
which is attached to the lanyard, is an ignition
cut-off switch designed to stop the engine in
the event the operator is thrown or moves
too far away from the helm.
The lanyard is equipped with a hook
on one end that should be attached to your
clothingorPFD,andtheoppositeendhasaslidethattsoverthe
ignitionswitch.Besurethattheslideisrmlyattachedtotheignition
switch before starting.
The ignition switch is located near the throttle control box, the
armrest or on the instrument panel. If the slide is left off or is loose,
the engine will crank but will not start.
Operators should NEVER
attempt to override this safety system!
e safety switch lanyard must be attached to the opera-
tor whenever the engine is running. Failure to do so may
result in death or serious injury!
Engine Hatch Switch
(MariStar 280/X-80, CSX-220, CSX-265)
Where equipped, an engine hatch cover
switch allows the cover to open and close elec-
tronically. The three-position switch is pressed
up to open and down to close the hatch.
e engine box serves as a machinery guard. e engine
must be OFF whenever the box is open. Clothing or body
parts can get caught in moving parts, causing death or
serious injury. Keep away from moving parts!
Engine Oil Pressure Gauge
(All Models)
The engine oil pressure gauge indicates
the pressure of the lubricating oil inside the
engine. The average pressure ranges are be-
tween six (6) pounds per square inch (PSI)
at 1000 RPM to 40 PSI or more at cruise-
range speeds. A reading of pressure below 5
PSI at 1000 RPM may be caused by a low oil level or other potentially
serious problems that result in low oil pressure. If you experience
low oil pressure, stop your engine immediately and check your oil
level before operating again.
Do not continue to run the engine if the oil pressure is
low. If you do, the engine may become so hot that it, or
surrounding components, could catch fire. You or others
could be burned and the boat seriously damaged. Check
your oil level and add an appropriate amount of approved
motor oil before operating again or have your boat ser-
viced by your local authorized dealer’s service depart-
ment. Note that damage to your engine from inappropri-
ate oil levels can be costly to repair. Such damage is not
covered by your warranty.
Engine Synchronizing Switch
(MariStar 280, X-80 and CSX 265)
This two-position switch allows the engines
to operate in synchronization. Do not engage
the switch unless the engines are running
but still in neutral (for safety’s sake)! Prior
to engaging the synchronizing switch, ensure that you are in a large
body of water. Avoid a tight cove or narrow river, and docks, dams or
other objects that may protrude into the body of water. Be certain
that there is a minimum of other vessels or trafc as you will need
room to perform this procedure.
Engaging the engine synchronization functionality re-
quires practice to master. Because the boat will be in gear
and will move during the process, even after mastering
the maneuver boat operators should synchronize engines
only on bodies of water of sufficient size to accomplish
the maneuver without making contact with other ves-
sels or with inanimate objects, which could cause serious
bodily injury or significant damage to the boat.
mastercraft 2010 ow n e r ’s m anual • page 5-4
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