6A-12 - SEAWATER COOLING MODELS 90-823225--1 1096
Draining Seawater Cooling
System
NOTICE
For cold weather or extended storage infor-
mation 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.
NOTICE
Refer to “Draining Precautions,” in this
section, BEFORE proceeding.
1. Check that engine is as level as possible to en-
sure complete draining of cooling system.
2. Remove drain plugs (port and starboard) from
cylinder block.
72993
a
Starboard Side Shown (Port Similar)
a - Drain Plug (Port and Starboard)
3. Repeatedly clean out drain holes using a stiff
piece of wire. Do this until entire system is
drained.
NOTE: It may be necessary to lift, bend, or lower
hoses to allow water to drain completely when hoses
are disconnected.
4. Remove hose or drain plug from bottom of port
and starboard manifolds.
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