Manual Drain System; Boat In The Water - Mercury MerCruiser Owner's Manual

13. Before launching the boat, pull up on the manual release valve. Verify that the green
indicators are no longer extended.

Manual Drain System

BOAT IN THE WATER

NOTE: Use this procedure if the air actuated single point drain system fails.
NOTE: It may be necessary to lift, bend, or lower hoses to allow water to completely drain
when hoses are disconnected.
1. Close the seacock (if equipped) or remove and plug the water inlet hose.
2. Remove the two blue drain plugs from the seawater pickup pump (front, starboard side).
3. Verify that water is draining from each opening.
4. Allow the system to drain for a minimum of five minutes. Mercury MerCruiser
recommends leaving the drain system open while transporting the boat or while
performing other maintenance to ensure that all water is drained.
5. For DTS engines, pull the lanyard stop switch (if equipped), or disable the ignition circuit
by pulling the fuse marked "CD".
6. Crank the engine over slightly with starter motor to purge any water trapped in the
seawater pickup pump. Do not allow the engine to start.
7. Prior to launching the boat or starting the engine, close the drain system by installing
the four blue drain plugs.
8. Open the seacock, if equipped, or unplug and reconnect the water inlet hose prior to
operating the engine.
90-899883295 JUNE 2008
a - Green indicators
a
a - Blue drain plug locations
a
6135
a
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Section 6 - Storage
Page 127