2023 OWNER’S MANUAL
/
390
5. If applicable, reconnect and verify that all hoses to the heater, the
head, the fresh water wash down, and the wet bar are in proper
working condition with no leaks.
6. Check the engine compartment and bilge for signs of nesting
animals. Clean as necessary.
7. Check the entire engine system for fluid, oil and coolant levels.
Add as necessary.
8. Check the entire engine for cracks or leaks caused by
freeze damage.
9. Check all hose clamps for tightness. Install the bilge drain plug and
the rear drain plug (if applicable).
10. Grease the propeller spline and install the propeller.
11. Perform daily maintenance as noted previously in this Owner’s
Manual. If it was not done prior to storage, perform annual
maintenance as well.
12. If the boat is equipped with the optional fresh water cooling system
and was drained for storage, fill the system with fresh coolant
solution per instructions in the Ilmor Engine Owner’s Manual.
13. For all models, with the boat in the water, cycle the key ON and then
OFF two (2) or three (3) times, allowing ten (10) seconds between
key cycles, before cranking the engine. This allows the fuel pump to
prime the fuel lines. Start the engine. In the event the engine does
not respond, allow a two-minute cool-down period for every thirty
(30) seconds of cranking. When the engine fires, keep a close watch
over the gauge readings and check for leakage and abnormal noises.
Keep speeds low for the first fifteen (15) minutes to allow the engine
to reach normal operating temperatures.
PROPELLER MAINTENANCE
Propeller damage is caused by striking solid objects. If the
propeller is not rotating at the time it strikes a solid object, the
damage is usually confined to just one blade and may be dicult to
see. If the propeller is rotating when it strikes an object, usually the
resulting damage can easily be seen on all blades.
CHECKING/REPAIRING
PROPELLERS
1. Ensure the engine is OFF and the emergency safety stop switch
is disconnected.
2. Clamp a small rule scale to the shaft strut, parallel to the shaft so
that the end of the scale is 3/32-inches from the leading edge of a
propeller blade.
3. Rotate the propeller slowly. There should be no more than 3/32-
inch variance between the blades. If the propeller is damaged, see
an authorized MasterCraft dealer for repair or replacement
as necessary.