9. Allow the system to drain for a minimum of five minutes. Pump air as
necessary to keep the green indicators extended.
10. For DTS engines, pull the lanyard stop switch (if equipped), or disable the
ignition circuit by pulling the fuse marked "CD."
11. Crank the engine over slightly with the starter motor to purge any water
trapped in the seawater pump. Do not allow the engine to start.
12. Remove the air pump from the air connection and return it to the mounting
bracket.
13. 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.
14. Before launching the boat, pull up on the manual release valve. Verify that
the green indicators are no longer extended.
a - Manual pressure release valve
b - Threaded cap for air connection
c - Green indicators
15. Open the seacock, if equipped, or unplug and reconnect the water inlet
hose prior to operating the engine.
BOAT OUT OF THE WATER
NOTE: This procedure is written for the air pump that is attached to the engine.
However, any air source can be used.
1. Place the boat on a level surface and ensure that the boat is level.
2. Obtain the air pump.
COLD WEATHER OR EXTENDED STORAGE
eng 93
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