Section 6 - Storage
Page 134 90-866938081 MAY 2009
Storage Descriptions
IMPORTANT: We strongly recommend that this service be performed by a Cummins
MerCruiser Diesel Authorized Repair Facility. Damage caused by freezing is not covered
by the Cummins MerCruiser Diesel Limited Warranty.
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.
NOTE: As a precaution, attach a tag to the key switch or steering wheel of the boat to
remind the operator to open the seacock or unplug and reconnect the water inlet hose
before starting the engine.
The power package must be protected from freeze damage, corrosion damage, or both
types of damage during storage. Storage is any length of time the product is not
operated. Based on the length of storage certain precautions and procedures must be
observed to protect the power package.
Freeze damage can happen when water trapped in the seawater cooling system
freezes. For example, after operating the boat, exposure to freezing temperatures for even
a brief period of time could result in freeze damage.
Corrosion damage is the result of saltwater, polluted water, or water with a high mineral
content trapped in the seawater cooling system. Saltwater should not stay in an engine's
cooling system for even a brief storage time; drain and flush the seawater cooling system
after each outing.
Freezing‑weather (freezing temperature) operation refers to operating the boat whenever
freezing temperatures are possible. Likewise, freezing‑weather storage refers to whenever
the boat is not being operated and freezing temperatures are possible. In such cases, the
seawater section of the cooling system must be completely drained immediately after
operation.
Seasonal storage refers to when the boat is not being operated for one month or more.
The duration varies according to the geographic location. Seasonal storage precautions
and procedures include all the steps for freezing‑weather storage and some additional
steps that must be taken when storage will last longer than the short time of
freezing‑weather storage.
Drive Storage
Cold Weather (Freezing Temperature) Storage
IMPORTANT: Cummins MerCruiser Diesel strongly recommends that this service is
preformed by an Authorized Cummins MerCruiser Diesel repair facility. Damage caused
by freezing is not covered by the Cummins MerCruiser Diesel Limited Warranty.
1. Remove the boat from the water if possible.
2. Drain the seawater section of the cooling system. Read all precautions and perform all
procedures found in Section 5—Draining the Seawater System.
3. Place a caution tag at the helm advising the operator to open the seacocks before
operating the boat.
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