MasterCraft NXT20 2023, Owner'S Manual, Page: 260 / 490

2023 OWNER’S MANUAL / 254
FASTFILL BALLAST PUMPS
Purpose
FastFill ballast pumps are designed to move water through the
ballast system and into or out of ballast tanks nearly three (3)
times faster than standard pumps.
Location
Ballast pumps are mounted throughout the boat.
Operation
Fast fill pumps operate using either the helm mounted touch display
or the manual ballast switches on the dash. For detailed operating
instructions, see the “X and XT Dual Screen Dash Operation” section
of the MasterCraft Owner’s Manual.
Annual Maintenance
MasterCraft recommends scheduling an appointment with an
authorized dealer’s service department to have a certified technician
perform all impeller changes.
Ballast pump impellers should be changed every 100 hours as part
of annual maintenance.
To change ballast pump impellers:
1. Remove three (3) of the four (4) cover screws. Loosen the
fourth screw. Retain the screws for the re-installation
process. Swing the cover out of the way to allow access to
the impeller.
2. Using needle-nose pliers, pull the old impeller out of
the casing.
3. Lubricate the new impeller before installation using
lubricant included in the package with the impeller kit.
4. Install the new impeller. It is intentionally larger than the
casing in the pump. Gently squeeze it in, making sure the
pump’s shaft aligns with the hub on the impeller.
5. Carefully slide the cover plate back into place. No silicone
is necessary due to the built-in gasket on the plate.
Tightening the screws should prevent leakage.
6. Run water through the ballast pumps. Ensure there are
no leaks.