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Mercury MerCruiser MCM 4.3L EFI ALPHA - Draining Seawater Section of Closed Cooled (Coolant) Models

Mercury MerCruiser MCM 4.3L EFI ALPHA
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MAINTENANCE SERVICE MANUAL NUMBER 25
Page 1B-36 90-861328--1 NOVEMBER 1999
DRAINING SEAWATER SECTION OF CLOSED COOLED (COOLANT) MODELS
NOTICE
Refer to Precautions in this section BEFORE proceeding.
IMPORTANT: Drain seawater section of closed cooling system only.
IMPORTANT: Engine must be as level as possible to ensure complete draining of
cooling system.
1. Remove drain plug from bottom of port and starboard exhaust manifolds.
74073
a
a-Drain Plug
2. Remove the drain plug from the water tube or Cool Fuel System cooler, as equipped.
75081
a
a
75018
Some Carbureted Models Fuel Injected Models
a-Drain Plug
NOTE: It may be necessary to lift, bend or lower hoses to allow water to drain completely
when hoses are disconnected.

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