MAINTENANCE
SERVICE MANUAL NUMBER 30
Flushing System MCM (Sterndrive)
If engine is operated in salty, polluted or mineral-laden water, flush cooling system
(preferably after each use) to reduce corrosion and prevent the accumulation of deposits
in the system. Thoroughly flush cooling system prior to storage.
NOTE: For additional protection against freezing and rust to the exhaust manifolds and
other components, a 50-50 mixture of antifreeze and water can be run through the engine
during Power Package Layup.
IMPORTANT: Low water pickups must be suitably blocked during flushing to ensure
proper water flow to engine.
1.
2.
3.
If boat is in water, raise drive unit to full UP position.
Install flushing attachment over water pickup holes in gear housing.
Attach a hose between the flushing attachment and a water tap.
a
c
b
72693
a - Flushing Attachment
b - Hose
c - Low Water Pickups (Hidden)
4.
If drive was raised, lower drive unit to full IN position.
WARNING
When flushing, be certain the area around propeller is clear, and no one is standing
nearby. To avoid possible injury, remove propeller.
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.
CAUTION
Watch temperature gauge on dash to ensure that engine does not overheat.
5.
Partially open water tap (approximately 1/2 maximum capacity). DO NOT use full water
pressure.
6.
7.
Place remote control in NEUTRAL, idle speed position, and start engine.
Operate engine at idle speed in NEUTRAL for 10 minutes, or until discharge water is
clear, then stop engine.
8.
Shut off water tap.
9.
Raise drive unit to full UP position.
Remove hose and flushing attachment.
10.
INDEX
Page 1B-16
90-863161 SEPTEMBER 2000
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 496 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 |
(2 votes, average: 4 out of 4)
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Great down load . it was all there an more