2023 OWNER’S MANUAL
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Spread grease over this portion of
the cable (Step 5)
Grease Fitting (Step 6)
ProStar Rudder Port
Zerk Fitting
4. Use solvent to clean old lubricant from the cable end, pivot and
rudder shaft.
7. Rotate the steering wheel back and forth several times to work the
lubricant in.
8. Reinstall the access panel.
Lubricate The Throttle System
Because this process should be completed while all movable
components of the drive train are NOT in motion, MasterCraft
recommends this be done while the boat is out of the water.
1. Ensure the engine is OFF and disconnect the engine safety starting
switch. Be sure that the throttle/shift control lever is in neutral. The
engine must be cool.
2. Open the engine box and locate the shift cable end.
3. Shift to full-throttle-forward.
4. Lubricate the cable ends and connections with a coating of
waterproof marine multi-purpose grease.
5. Lubricate the pivots and linkages with a light grease.
6. Shift the control lever from full-throttle-forward to full-throttle-
reverse several times to work the lubricant in.
Check the Ballast Pump Impeller
This applies only to X Series + XStar boats equipped with some
type of ballast system. The number of ballast pumps varies from
system to system. Authorized MasterCraft dealers can provide
guidance to locate any and all pumps.
5. Spread a generous amount of white lithium grease over the cable
end. Work the steering wheel back and forth and reapply grease.
6. Using the flexible end of a grease gun, give two (2) full shots of
white lithium grease to the zerk fitting on the steering tube pivot
(circled above). Clean up any old grease purged from the areas.
NOTE: The ProStar has one additional rudder port zerk fitting.
Do NOT use white lithium grease on this rudder port. Use two (2)
full shots of Alpha FG2-100, available only from an authorized
MasterCraft dealer,
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