Mercury 2.8 Diesel, Operation & Maintenance Manual

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Section 5 - Storage
90-8M0113987
eng
DECEMBER 2015 Page 99
2. Start the engine and operate until it reaches normal operating temperature.
3. Stop the engine.
4. Change the engine oil and filter.
5. Start the engine and run for about 15 minutes. Check for oil leaks.
6. Flush the seawater cooling system. See
Flushing the Seawater System
.
Seasonal Storage Instructions
1. Observe all precautions and perform all procedures found in
Preparing Your Power Package for Seasonal or Extended
Storage
.
2. Observe all precautions and perform all procedures found in
Draining the Seawater System
and drain the seawater
section of the cooling system.
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.
IMPORTANT: Mercury recommends the use of propylene glycol antifreeze in the seawater section of the cooling system
for cold weather (freezing temperature), seasonal storage, or extended storage. Make sure that the propylene glycol
antifreeze contains a rust inhibitor and is recommended for use in marine engines. Be certain to follow the propylene glycol
manufacturer's recommendations.
3. Fill a container with approximately 5.6 liters (6 U.S. quarts) of propylene glycol antifreeze and tap water mixed to
manufacturer's recommendation to protect the engine to the lowest temperature to which it will be exposed during cold
weather or extended storage.
4. Disconnect the seawater inlet hose from the seawater pump. Using an adapter, if necessary, temporarily connect a hose of
appropriate length to the seawater pump and place the other end of the hose into the container of propylene glycol
antifreeze and tap water.
Typical
a - Seawater pump
b - Temporary hose
c - Container of propylene
glycol antifreeze and tap
water
NOTE: Discharge of propylene glycol into the environment may be restricted by law. Dispose of propylene glycol in
accordance with federal, state, and local laws and guidelines.
5. Start the engine and operate at idle speed until the antifreeze mixture has been pumped into the engine seawater cooling
system.
6. Stop the engine.
7. Remove the temporary hose from the seawater pump.
8. Clean the outside of the engine and repaint required areas with primer and spray paint. After the paint has dried, coat the
engine with the specified corrosion‑inhibiting oil or equivalent.
Description Where Used Part Number
Corrosion Guard
Outside of engine
92‑802878‑55
Light gray primer 92‑802878‑52
Mercury Diesel White 8M0108939
23452
a
b
c