2017 OWNERS MANUAL / 380
head before storage. Failure to do so may cause unnecessary odors
and damage to the tanks, which are not covered under warranty. If
using antifreeze in the head, drain the potable water tank and add
freshwater antifreeze to the potable water tank. Flush the antifreeze
and water mixture through the head and into the waste holding
tank. Then empty the holding tank. Never use automotive-type anti-
freeze in the freshwater system.
Step 8
Prepare the bow thruster (if applicable) for winterization by
removing the boat from the water and, with the battery switch on,
hold the bow thruster joystick to each side for approximately two
to three (2-3) seconds. This will pump water out of the thruster. A
small amount of water will remain in the thruster jet. Bow thrusters
should not be used if temperatures are near or below freezing as
a small amount of ice may have formed in the pump and could
potentially damage the pump if used before thawing.
Do not operate bow thrusters at or near freezing temperatures.
Failure to do so may result in ice damage to the thruster that may
not be covered under warranty.
Step 9
If the tower will be lowered during storage, be certain that the tower
does not rest on the boat upholstery or on any support that rests
Step 4
If the boat is equipped with a heater or ballast bags, be sure to
disconnect the hoses (ballast hoses and heater circulation pump
hoses) and drain any remaining water in the lines to avoid freezing.
Even small amounts of water in any of these areas can cause
significant damage upon freezing. Such damage is not covered
under warranty.
Be sure that disconnected hoses will not become entangled in the
engine belt when the engine turns over. Failure to do so may result
in damage to the engine and/or critical boat systems.
Step 5
For boats equipped with an engine flush kit you must winterize the
engine flush fitting mounted to the transom of the boat:
• Remove the boat from the water.
• Drain the engine according to the Ilmor Engine Owner’s Manual
included with the Owner’s Manual Information Packet.
• Add one (1) gallon of marine grade antifreeze to a five (5) gallon
bucket.
• Attach a garden hose to the flush valve adapter mounted on
the transom. Place the other end of the hose in the bucket with
the antifreeze.
• Start the engine and allow the engine to draw the antifreeze
into the motor. DO NOT EXCEED 1100 engine RPM. Once all
the antifreeze has been drawn out of the bucket and into the
engine, turn the engine o to prevent loss of antifreeze or
overheating.
Step 6
Use duct tape to seal exhaust flaps to prevent dirt and nesting
rodents from entering the engine or exhaust system.
Step 7
On X26 boats equipped with a head, clean the tanks with a mild
cleaner or warm soapy water that will not harm the tank. Avoid all
petroleum-based household cleaners. Always clean and dry the
on the upholstery. The tower or support(s) may leave a permanent
imprint on the upholstery. This is not covered under warranty. For
ProStar models use the black tower support legs included with
the boat from the dealership to keep the tower from resting on the
motorbox.
Step 10
Cover the boat with a boat cover or tarp.
NOTE: If the boat is to be stored outside and subject to accumulations
of snow, water and ice, a MasterCraft mooring cover with anti pooling
poles should be used. If you do not have a MasterCraft mooring cover,
a tarp or other water resistant cover should be used with a support
so that the covering will not sag, rip or tear, thereby allowing water
to enter the boat. Two-inch diameter PVC plumbing pipe is ideal for
this purpose. It is readily available at local hardware stores, and it is
easy to work with. Also, its rounded shape will prevent damage to the
canvas.
BALLAST SYSTEM
WINTERIZATION
Ballast tanks, pumps, hoses and fittings must be properly winter-
ized to prevent freezing damage during winter storage. Because of
the complexity of preparing a ballast system for winter storage, as
well as the possibility of extreme damage to the ballast system if a
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