Service manual

MAINTENANCE SERVICE MANUAL NUMBER 26
Page 1B-26 90-861329--1 MARCH 1999
Draining Seawater Section of Closed Cooled (Coolant) Models
NOTICE
Refer to “Cold Weather or Extended Storage Precautions” in this section,
BEFORE proceeding.
CAUTION
If boat is in the water or is to remain in the water, seacock (if equipped) must remain
closed until engine is to be restarted to prevent contaminated water from flowing
back into cooling system. If boat is not fitted with a seacock, water inlet hose must
be left disconnected and plugged to prevent contaminated water from flowing into
cooling system and/or boat. As a precautionary measure, attach a tag to the ignition
switch or steering wheel with the warning that the seacock must be opened or the
water inlet hose reconnected prior to starting the engine.
1. Ensure engine is as level as possible to ensure complete draining of cooling system.
2. Remove drain plug from the following locations:
a. Aft (rear) drain plug from the heat exchanger.
73581
a
a-Heat Exchanger Drain Plug
b. Bottom of exhaust manifold.
75177
a
a-Exhaust Manifold Drain Plug
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