Mercury MerCruiser 496 CID 8.1L Gasoline Marine Engines Service Manual Number 30

TROUBLESHOOTING

SERVICE MANUAL NUMBER 30

Insufficient Water Flow from Belt Driven Seawater Pickup Pump

Cause

Special Information

Drive belt

Loose, worn or broken

Seawater shutoff valve partially or fully

closed

Clogged or improperly installed sea

strainer

Pump will suck air, pump may fail to prime

or will force air bubbles into cooling

system

Loose hose connections between seawa-

ter pickup and seawater pump inlet

Seawater inlet hose kinked or plugged

Seawater pickup plugged

Obstruction will be in front of seawater

pickup, causing air bubbles to be forced

into cooling system

Obstruction on boat bottom causing water

turbulence.

Faulty seawater pump

INDEX

Page 1C-22

90-863161 SEPTEMBER 2000

Product Specification

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	Please Enter the Security Characters Shown Below. Letters are Case Sensitive. Your download link will appear upon completing this step. - 355 pages
Document File Type	PDF
Copyright	Attribution Non-commercial

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Mercury MerCruiser 496 CID 8.1L Gasoline Marine Engines Service Manual Number 30 SKU UPC Model

Sven-Erik Walin on Jun 10, 2018. crankcase ventilation

How many openings for crankcaseventilation is there on
Merc 496 HO ?

John fox on Apr 11, 2018. Manual

Great down load . it was all there an more