7 - COLD WEATHER OR EXTENDED STORAGE
58 90-8M0098854 MARCH 2015
COOLING SYSTEM PREPARATION
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.
USING ANTIFREEZE
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.
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