SERVICE MANUAL NUMBER 26
SEAWATER COOLED MODELS
Identification
a
72674
b
71801
Brass Thermostat1
Stainless Steel Thermostat2
1
2
Serial number break:0L340999 and below.
Serial number break:0L341000 and above.
Flushing Cooling System
If engine is operated in salty, polluted or mineral laden waters, cooling system should be
flushed periodically (preferably after each use) to reduce corrosion and prevent the
accumulation of deposits in the system. Cooling system also should be thoroughly flushed
prior to storage.
WARNING
When flushing cooling system with boat out of water, be certain that area in vicinity
of propeller is clear and no one is standing nearby.
CAUTION
If boat is in the water, seacock (if equipped) must be left closed until engine is to
be restarted to prevent water from flowing back into cooling system. If boat is not
fitted with a seacock, water inlet hose must be left disconnected and plugged, to
prevent water from flowing into cooling system and/or boat. As a precautionary
measure, attach a tag to the ignition switch or steering wheel with the warning that
the seacock must be opened or the water inlet hose reconnected prior to starting
the engine.
CAUTION
Observe temperature gauge on dash to ensure that engine does not overheat.
CAUTION
Do not run engine above 1500 rpm when flushing. Suction created by seawater pick-
up pump may collapse flushing hose, causing engine to overheat.
Index
90-861329--1
MARCH 1999
Page 6A-3
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 181 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(6 votes, average: 5 out of 5)
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Great resource. Excellent information provided.
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