Mercury MerCruiser MCM 454 Mag MPI Service Manual page 68

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SERVICE MANUAL NUMBER 23

MIE (Inboard) Models:

1. Engine must be as level as possible to ensure complete draining of cooling system.

2. Remove drain plugs (port and starboard) from cylinder block.

NOTE: It may be necessary to lift, bend or lower hoses to allow water to drain completely

when hoses are disconnected.

3. Remove drain plug from bottom of port and starboard exhaust manifolds.

NOTE: With the engine level, sufficient draining of manifolds will occur when exhaust

manifold-to-thermostat housing hoses or drain plugs are removed.

90-861326--1 MARCH 1999

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Refer to "Cold Weather or Extended Storage," "Precautions," in this section,

Starboard Side Shown (Port Similar)

BEFORE proceeding.

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