MerCruiser 8.1 H.O., User Manual

Page: 93 / 106

Section 6 - Storage
90-899883273 MARCH 2008 Page 85
7. Verify that water is draining from each opening. If not, use the
Manual Drain System
instructions.
a
b
17254
a - Port side drain location b - Starboard side drain location
8. Allow the system to drain for a minimum of five minutes. Pump air as necessary to keep
the green indicators extended.
9. For DTS engines, pull the lanyard stop switch (if equipped), or disable the ignition circuit
by pulling the fuse marked "CD".
10. Crank the engine over slightly with starter motor to purge any water trapped in the
seawater pump. Do not allow engine to start.
11. Remove the air pump from the air manifold and return it to the mounting bracket.
12. Mercury MerCruiser recommends leaving the drain system open while transporting the
boat or while performing other maintenance. This helps ensure that all water is drained.
13. Before launching the boat, pull up on the manual release valve. Verify that the green
indicators are no longer extended.
a
6135
a - Green indicators
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.