6B-30 - CLOSED COOLING MODELS 90-823225--1 1096
a. If equipped with seacock: Observing pre-
caution above, open seacock.
b. If NOT equipped with seacock: Observing
precaution above, remove plug from seawa-
ter inlet hose and reconnect seawater inlet
hose. Tighten hose clamps securely.
Draining Seawater Section of
Closed Cooling System
NOTICE
For cold weather or extended storage
information and procedures, refer to
SECTION 1B.
Draining Precautions
!
CAUTION
If boat is in the water, seacock (water inlet valve),
if so equipped, must be left closed until engine is
to be restarted to prevent water from flowing
back into cooling system and/or boat. If boat is
not fitted with a seacock, water inlet hose must
be left disconnected and plugged to prevent wa-
ter from flowing back into cooling system and/or
boat. As a precautionary measure, attach a tag to
the ignition switch or steering wheel of the boat
with the warning that the seacock must be
opened or the water inlet hose reconnected prior
to starting the engine.
IMPORTANT: Observe the following information
to ensure complete draining of cooling system.
• Engine must be as level as possible.
• A wire should be repeatedly inserted into all
drain holes to ensure there are no obstruc-
tions in passages.
IMPORTANT: To prevent threads in manifolds, el-
bows and cylinder blocks from rusting out dur-
ing storage, reinstall plugs using Quicksilver
Perfect Seal on threads. Never leave drain plugs
out during storage.
NOTE: If possible, place a container under drains
and hoses to prevent water from draining into boat.
1. Close seacock (if so equipped) or disconnect and
plug seawater inlet hose.
2. Check that engine is as level as possible to en-
sure complete draining of cooling system.
3. Remove drain plugs (if equipped) from port and
starboard exhaust elbows.
71330
a
a - Drain Plug (Port and Starboard)
4. Remove drain plug from heat exchanger.
70583
a
a - Drain Plug
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