Tow Sports - Mercury Inboard 5.7L Manual

Maintenance
6. Snap the quick connect fitting and the water hose into the flush socket on the engine.
7. Start the engine within 15 seconds.
8. Operate the engine between 600 RPM and 800 RPM. Do NOT exceed 800 RPM.
9. Allow engine to reach normal operating temperature. Watch the temperature gauge on
the dash to ensure that the engine does not overheat.
10. Flush the engine for 10 minutes or until discharge water is clear.
11. Shut off the engine.
Engine overheating can cause engine damage. To avoid, observe the water temperature
gauge and ensure that the engine is operating in the normal range.
Do not let water run more than 15 seconds with engine not operating or too much flushing
water will collect in the muffler.
12. Within 15 seconds, disconnect the quick connect fitting and water hose from the flush
socket on the engine by pressing the release button on the flush socket.
13. Attach to the next engine, if equipped, and repeat procedure.
14. Turn off the water source.
15. Remove the quick connect fitting from the water hose.
16. Replace the blue cap into the flush socket on the engine.
17. Open the seacock, if equipped, or unplug and reconnect the water inlet hose prior to
operating the engine.
NOTE: If the unit is to be stored in the water, the seacock should remain closed until time
of usage. If unit is to be stored out of the water, open the seacock.

Tow Sports

1. If flushing the engine with the boat in the water, close the seacock or remove and plug
the water inlet hose.
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CAUTION
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CAUTION
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90-860174050 JUNE 2005