SERVICE MANUAL NUMBER 26
SEAWATER COOLED MODELS
5.
Insert a small wire (repeatedly) to make sure that vent holes and water drain holes and
passages (as shown) are unobstructed and open.
e
b
d
f
c
a
f
c
70134
71216
a - Speedometer Pitot Tube
b - Gear Housing Cavity Drain Hole
c - Trim Tab Cavity Vent Hole
d - Trim Tab Cavity Drain Passage
e - Gear Housing Water Drain Hole (One Each - Port and Starboard)
f - Gear Housing Cavity Vent Hole
6.
7.
Crank engine over SLIGHTLY, with starter motor, to purge any water trapped in
seawater pickup pump. DO NOT ALLOW ENGINE TO START.
After seawater section of cooling system has drained completely:
a. Coat threads of drain plugs (except blue plastic plugs with seals) with Perfect Seal
and install.
b. Tighten drain plugs securely.
c. Reconnect hoses and tighten all hose clamps securely.
d. If NOT equipped with seacock: Seawater inlet hose must remain disconnected
and plugged until engine is to be restarted.
IMPORTANT: MerCruiser recommends that propylene glycol antifreeze (nontoxic
and biodegradable, which makes it friendly to lakes and rivers) be used in seawater
section of the cooling system for cold weather 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 recom-
mendations.
Index
90-861329--1
MARCH 1999
Page 6A-11
| 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)
Marine readers have rated Mercury MerCruiser GM 4 Cylinder 181 cid 3.0L Marine Engines Service Manual Number 26 5.0 out of 5.0 based on 6 product reviews. Thanks for sharing this material. Helps a lot after suffering with bad mechanics. spend too much money and nothing very good
great manual, makes impossible jobs possible. without a manual you can not do the job, a must have.
Great resource. Excellent information provided.
Need help to install automate choke
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