Section 6 - Storage
90-864197070 JUNE 2007 Page 95
2. Remove three blue drain plugs: one from the distribution housing (lower front, port side)
and two from the seawater pickup pump (front, starboard side).
a
a
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a - Blue drain plug
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. 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.
6. Prior to launching the boat or starting the engine, close the drain system by installing
the three blue drain plugs.
Multi‑Point Drain (MPD) System
BOAT OUT OF THE WATER
1. Place the boat on a level surface to ensure complete draining of the system.
2. Remove the blue drain plugs from the following locations. If necessary, clean out the
drain holes using a stiff piece of wire. Do so until the entire system is drained.
a. Port and starboard side of cylinder block
b. Bottom of exhaust manifolds
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M110050
93235672
b
a
a
b
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a - Cylinder block drain plug b - Exhaust manifold drain plug
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