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Mercury MerCruiser 5.7 MPI User Manual

Mercury MerCruiser 5.7 MPI
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Section 5 - Maintenance
90-899883173 DECEMBER 2007 Page 79
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.
4. Snap the quick connect fitting and the water hose into the flush socket on the engine.
33389
V‑drive shown (inline similar)
5. Open the water source completely.
6. Start the engine within 15 seconds.
7. Operate the engine at 1300 RPM, +/‑ 100 RPM.
8. Allow engine to reach normal operating temperature. Watch the temperature gauge on
the dash to ensure that the engine does not overheat.
9. Flush the engine for a minimum of 10 minutes or until the discharge water is clear.
10. Shut off the engine.
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.
11. Turn off water source within 15 seconds of shutting off engine.
12. 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.

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Mercury MerCruiser 5.7 MPI Specifications

General IconGeneral
BrandMercury
ModelMerCruiser 5.7 MPI
CategoryEngine
LanguageEnglish

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