5. Remove the seawater inlet hose from the seawater pump at the location shown. Plug the hose to prevent water from
siphoning into the engine or boat.
Seawater inlet hose connection
6. Use a suitable adapter to connect the flushing hose from the water source to the water inlet of the seawater pump.
NOTICE
Without sufficient cooling water, the engine, the water pump, and other components will overheat and suffer damage. Provide
a sufficient supply of water to the water inlets during operation.
7. With the sterndrive in a normal operating position, open the water source fully.
8. Place the remote control in the neutral idle speed position and start the engine.
NOTICE
Operating the engine out of the water at high speeds creates suction, which can collapse the water supply hose and overheat
the engine. Do not operate the engine above 1400 RPM out of the water and without sufficient cooling water supply.
9. Slowly advance the throttle until the engine reaches 1300 RPM (± 100 RPM).
10. Observe the water temperature gauge to ensure that the engine is operating in the normal range.
11. With the sterndrive in neutral, operate the engine for at least 10 minutes.
12. Slowly return the throttle to the idle speed position.
13. Stop the engine.
14. Shut off the water and remove the flushing attachments.
15. If the boat is out of the water, install the water inlet hose to the aft side of the seawater pump. Tighten the hose clamp
securely.
16. Install the propeller.
17. If the boat is moored in the water, tag the ignition switch with an appropriate tag requiring the seawater inlet hose to be
connected prior to operating the engine.
SeaCore Power Package Flushing Procedure
NOTE: Flushing is only required after operation in salty, brackish, mineral‑laden, or polluted water. Flushing is required after
each outing for best results.
IMPORTANT: Flushing the SeaCore power package with the boat and sterndrive in the water is less effective. Flushing the
SeaCore power package is most effective when performed with the boat and sterndrive out of the water, such as on a boat lift
or trailer.
Models Using the Sterndrive Water Pickup
IMPORTANT: The system is designed to flush the Bravo sterndrive and the engine with one water source. Do not block or
remove the inlet water hose from the sterndrive to the engine.
IMPORTANT: Do not allow the engine to pull air or seawater from alternative water pickup sources during the flushing
procedure. If equipped, ensure that all alternative water inlet hoses are plugged at both ends.
1. Remove the boat from the water.
Section 4 - Maintenance
90-8M0128973 eng MAY 2017 Page 85
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