Section 3 - On the Water
Page 28 90-866938081 MAY 2009
• At the end of each daily operation, completely drain the seawater section of the cooling
system to protect against damage by freezing.
• At the end of each daily operation, drain the water from the water separator, if
equipped. Fill the fuel tank at end of daily operation to prevent condensation.
• Use the required permanent‑type antifreeze solution to protect components against
damage by freezing.
• Use proper cold weather lubrication oil; ensure that the crankcase contains a sufficient
amount.
• Make certain that the battery is of sufficient size and is fully charged. Check that all
other electrical equipment is in optimum condition.
• At temperatures of –20° C (–4° F) and below, use a coolant heater to improve cold
starting.
• If operating in arctic temperatures of –29° C (–20° F) or lower, consult your Cummins
MerCruiser Diesel Authorized Repair Facility for information about special cold weather
equipment and precautions.
See Section 6 for cold weather or extended storage related information.
Drain Plug and Bilge Pump
The engine compartment in your boat is a natural place for water to collect. For this
reason, boats are normally equipped with a drain plug, a bilge pump, or both a drain plug
and a bilge pump. Install the drain plug and check the operation of the bilge pump, if
equipped, before putting the boat in the water.
Check these items on a regular basis to ensure that the level of water does not come into
contact with your power package. Components on your engine will be damaged if
submerged.
Damage caused by submersion is not covered by the Cummins MerCruiser Diesel Limited
Warranty.
Protecting People in the Water
WHILE THE BOAT IS MOVING
A person in the water may find it very difficult to take quick action to avoid a boat heading
in their direction, even at slow speeds.
Always slow down and exercise extreme caution any time you are boating in an area where
there might be people in the water.
Whenever a boat is moving (even coasting) and the gear shift is in neutral, there is sufficient
force by the water on the propeller to cause the propeller to rotate. This neutral propeller
rotation can cause serious injury.
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