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7741591 / 2003-12
Draining the cooling system
CAUTION!
When temperatures drop below freezing, failure to
completely drain the cooling system will result in se-
rious damage to the engine and exhaust manifolds.
To assure complete drainage, probe all drain open-
ings with a piece of wire to remove any blockage.
NOTE! The following steps are very important in pro-
tecting your engine from damage in freezing
conditions. If you are unsure of how to per-
form any of the following steps, see your
Volvo Penta dealer for a complete
end-of-season/winterization service. Freeze
damage to the engine package is not covered
by your Volvo Penta limited warranty.
•
Perform these procedures with the boat out of the
water. It will prevent damage to cooling system
components if temperatures drop below freezing.
•
When draining the engine, raise or lower the bow
of the boat to position the engine in a level atti-
tude. This will provide for complete drainage of
the block and manifold. If the bow of the boat is
higher or lower than the stern, some water may be
trapped in the block.
Engine — raw water cooled
1.
Locate the engine flush connector (1) at the front of the
engine
refer to features pages for location of flush adapter.
Connect a garden hose to the connector with the supplied
adapter.
NOTE! The hose connection adapter supplied with
the engine may not work in all geographic lo-
cations. If you need an adapter other than the
one supplied, contact your Volvo Penta dealer
for the correct adapter for you location.
Maintenance
2
1
21168
Caution!
Do not run the engine during the flushing procedure.
Water is not supplied to the raw water pump and the
pump impeller will be damaged.
2.
Turn the fresh water supply on and flush the engine with
fresh water for 5 minutes to ensure the drain ports are open.
3.
Turn off the fresh water supply and disconnect the garden
hose from the engine flush connector. Lower the engine
flush hose below the engine level and let drain.
4.
After all of the water has drained out, reattach the hose
cap and place back in original location.
5.
Remove drain plugs from the exhaust manifold(s) and let
drain completely. Reinstall the drain plug(s) and tighten.
Caution!
If a garden hose with fresh water supply is unavail-
able, you must remove the hose nipple(s) from the
engine to drain the engine block. To ensure all water
is drained, clear the drain hole with a piece of wire.
After the engine is drained reinstall the hose nipples
and flush adapter as removed. The exhaust manifolds
are drained as described previously
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