7 - C
OLD
W
EATHER
OR
E
XTENDED
S
TORAGE
56
90-8M0114811 JANUARY 2016
C
OOLING
S
YSTEM
P
REPARATION
NOTICE
Water trapped in the seawater section of the cooling system can
cause corrosion or freeze damage. Drain the seawater section of
the cooling system immediately after operation or before any length
of storage in freezing temperatures. If the boat is in the water, keep
the seacock closed until restarting the engine to prevent water from
flowing back into the cooling system. If the boat is not fitted with a
seacock, leave the water inlet hose disconnected and plugged.
U
SING
A
NTIFREEZE
NOTE: A nontoxic and environmentally safe propylene glycol
antifreeze containing a rust inhibitor must be used when preparing the
seawater portion of the cooling system for cold weather or extended
storage. Be certain to follow the manufacturer's recommendations.
1. Place premixed propylene glycol antifreeze into an appropriate
container that will allow the seawater inlet hose to be placed
into the container.
2. If the boat is in the water, close the seawater inlet valve.
3. Loosen the hose clamp and remove the seawater inlet hose
from the downstream side of the valve.
4. Place the hose into the container of premixed antifreeze. The
antifreeze mixture should be at the correct concentration level
to protect the engine to the lowest temperature to which it will
be exposed during cold weather or extended storage.
a -
Seawater inlet valve
b -
Disconnect the hose at the valve and place into container
of antifreeze
c -
Sea strainer
d -
To the seawater pump
e -
Boat hull
f -
Seawater pickup
5. Operate the engine at idle until antifreeze is expelled from the
exhaust manifolds of the engine.
6. Stop the engine and reconnect the seawater hose.
a
b
c
d
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e
f