2021 OWNERS MANUAL / 228
BILGE SYSTEM, CENTER DRAIN,
TRANSOM DRAIN PLUGS, SEA
STRAINERS AND SCUPPERS
Bilge pumps will not operate in either the manual or automatic
mode if the batteries are fully discharged. This condition may allow
excessive water into the hull which can damage or sink the boat.
Make frequent checks of battery charge and bilge pump function
when boats are moored and exposed to the elements.
Models
All
Purpose
Water inevitably intrudes into any boat. MasterCraft boats are de-
signed to expel the water via the bilge system. When on the water,
bilge pumps will expel water. Bilge pump sensors allow the system
to pump water overboard either automatically or manually. Because
the bilge is located in the lowest portion of the boat’s hull, it is not
always readily apparent to individuals on-board whether there is
water in the bilge or not. To allow operators the opportunity to man-
ually verify water levels in the bilge, a center access plate or access
door is built into every boat.
All boats (except Prostar) have two drain plugs, which allow water to
be drained from the boat when the boat is OUT of the water. There
is a center T-handle drain (the only one for a Prostar) and a transom
drain plug. When out of the water, on a trailer or lift, water can nor-
mally be drained into the bilge system by opening the center drain.
Boats have sea strainers installed to assist in keeping debris out of
the engine and water intake systems such as the ballast system.
Location
The bilge lines and pumps are beneath the decks. The center drain
location will vary slightly by model, but generally is found close to or
adjacent to the driver’s seat. It will be accessed through a hatch or
access plate, which may be under marine carpet. A transom drain
plug is on the centerline of the transom. Sea strainers are located in
front of the engine and can be accessed by removing the trans-
2021MCOwnerManualFINAL.indd 228 8/26/20 1:52 PM
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