Special Attention
In standard ballast systems, the engine must be operated at
1500 RPM or more during the fill and empty processes for optimal
performance. On models equipped with the FastFill Ballast
System (see the FASTFILL BALLAST PUMP section of this Owner’s
Manual) the engine must be operated under 1500 RPM for optimal
performance. Operating the FastFill system at higher RPM can
cause the low voltage alarm to sound. Check engine specifications
for related engine idle speed, which, in some instances, may be too
low for the empty/fill operation to be properly accomplished. Failure
to increase or decrease engine RPM to the required level may result
in malfunction or permanent damage to the ballast pumps that
force water through the system or to the engine’s electrical system.
Such damage is not covered under your warranty.
Special Attention
NEVER tow a trailer with water in the boat’s ballast tank(s)! Even
small amounts of water can cause serious problems with the
required balance of the boat on the trailer (see the Trailers section
of this Owner’s Manual if you own a MasterCraft trailer).
Note that this information is also applicable when towing with
trailers built and sold by other manufacturers. Correct balance is
critical to safe trailering.
Never tow a boat with water in the ballast tank(s). doing so may
damage the boat and trailer, resulting in loss of control that could
cause serious injury or death.
Additional Special Attention
Ballast pump impellers MUST be replaced on a regular basis (at
least annually, but more often as necessary). Its purpose is to move
water from the intake on the hull bottom and into the ballast tank,
and vice versa when emptying the ballast tank. Through usage, the
impeller, by design, will wear and eventually need replacement (see
Care and Maintenance section of this Owner’s Manual). Authorized
MasterCraft dealers can help to locate any and all pumps and
impellers. Failure to follow directions may result in damage to the
ballast pump that is not covered under warranty.
Failure to follow instructions regarding the care and maintenance
of ballast pumps as outlined in this Owner’s Manual can result in
damage to the ballast pump that is not covered under warranty.
Troubleshooting
If the ballast pumps do not turn ON when the switch is activated
or the touch screen is used, check that the circuit has not tripped
2021MCOwnerManualFINAL.indd 255 8/26/20 1:53 PM
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