Section 6 - Storage
Page 120
90-8M0053363
eng
NOVEMBER 2010
7. Immediately remove the blue drain plug from the side of the thermostat housing or the heat exchanger. This must be removed
within 30 seconds to properly vent the cooling system.
Closed Cooled Models
Seawater Cooled Models
a -
Blue drain plug location
b -
Blue air pump
c -
Air manifold
d -
Green indicators
8. Verify that water is draining from each opening. If not, use the
Three Point Manual Drain System
instructions.
a -
Port side drain location
b -
Starboard side drain location
9. Allow the system to drain for a minimum of five minutes. Pump air as necessary to keep the green indicators extended.
10. Crank the engine over slightly with the starter motor to purge any water trapped in the seawater pump. Do not allow engine
to start.
11. Reinstall the blue drain plug in the thermostat housing or heat exchanger.
12. Remove the air pump from the air manifold 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.
6124
a
b
c
d
6125
a
b
c
d
a
b
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