Section 5 - Maintenance
90-899883295 JUNE 2008 Page 113
NOTICE
Flushing the engine when it is not operating will result in water collecting in the exhaust
system, damaging the engine. Do not supply flush water for more than 15 seconds without
the engine operating.
5. With the sterndrive in the normal operating position, completely open the water source
to provide maximum water supply.
6. Place the remote control in the neutral idle speed position.
7. Immediately 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.
8. Depress the throttle‑only button and slowly advance the throttle until the engine
reaches 1300 RPM (± 100 RPM).
9. Observe the water temperature gauge to ensure that the engine is operating in the
normal range.
10. Operate the engine with the sterndrive in neutral for a minimum of 10 minutes.
11. For engine packages operated in saltwater, brackish water, mineral‑laden water, or
polluted water, continue to operate the engine until the discharge water is clear.
12. Slowly return the throttle to the idle speed position.
13. Stop the engine.
14. Immediately shut off the supply water and remove the flushing attachment.
15. Tag the ignition switch with an appropriate tag requiring the seacock to be opened or
the seawater inlet hose to be reconnected before operating the 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.
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.
NOTE: Engines with the sterndrive water inlet blocked off at the gimbal housing: Refer to
Alternative Water Pickups.
!
WARNING
Rotating propellers can cause serious injury or death. Never operate the boat out of the
water with a propeller installed. Before installing or removing a propeller, place the drive
unit in neutral and engage the lanyard stop switch to prevent the engine from starting.
Place a block of wood between the propeller blade and the anti‑ventilation plate.
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.
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