MAINTENANCE
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999
Page 1B-55
MCM (Sterndrive) Models:
NOTICE
Refer to “Cold Weather or Extended Storage,” “Precautions,” in this section,
BEFORE proceeding.
1. Engine must be as level as possible to ensure complete draining of cooling system.
2. Remove end caps, sealing washers and gaskets from the heat exchanger.
71515
a
b
c
d
a -
Heat Exchanger
b -
Sealing Washer
c -
End Cap
d -
Gasket
IMPORTANT: Use compressed air to blow any remaining water from the tubes in the
heat exchanger.
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.
74130
a
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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