MerCruiser Sterndrive 4.3 MPI User Manual page 129

6. Pump air into the system until both green indicators extend and water drains from both
sides of the engine. The port side will begin draining before the starboard side.
a
b
Closed Cooled Models
7. Verify that water is draining from each opening. If not, use the Three Point Manual
Drain System instructions.
a
8. Allow the system to drain for a minimum of five minutes. Pump air as necessary to keep
the green indicators extended.
9. Crank the engine over slightly with starter motor to purge any water trapped in the
seawater pump. Do not allow engine to start.
10. Remove the air pump from the air manifold and return it to the mounting bracket.
11. 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.
90-864195061 NOVEMBER 2006
c
d
a - Blue drain plug location
b - Blue air pump
a - Port side drain location
a
6124
Seawater Cooled Models
c - Air manifold
d - Green indicators
b
b - Starboard side drain location
Section 6 - Storage
c
b
d
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