Seacore Power Package Flushing Procedure; Models Using The Sterndrive Water Pickup - Mercury MerCruiser Axius 350 MAG User Manual

With emissions control

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Section 5 - Maintenance

Remove the seawater inlet hose from the seawater pump and plug the hose to prevent water from siphoning into the engine

or boat.

Using a suitable adapter, connect the flushing hose from the water source to the water inlet of the seawater pump.

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.

With sterndrive in normal operating position, open the water source fully.

Place the remote control in neutral idle speed position and start engine.

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.

Slowly advance throttle until engine reaches 1300 RPM (+/‑100 RPM).

10. Observe the water temperature gauge to ensure that the engine is operating in the normal range.

11. Operate engine with sterndrive in neutral for about 10 minutes or until discharge water is clear.

12. Slowly return throttle to idle speed position.

13. Stop engine.

14. Shut off the water and remove 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. If the boat is in the water: Tag the ignition switch with an appropriate tag requiring the seawater inlet hose to be reconnected

prior to operating engine.

SeaCore Power Package Flushing Procedure

NOTE: Flushing is needed only for salt, brackish, mineral laden or polluted water applications. Flushing is recommended 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.

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.

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90-864197084 NOVEMBER 2008

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