Mercury MerCruiser GM 4 Cylinder 181 cid 3.0L Marine Engines Service Manual Number 26, 1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011

SERVICE MANUAL Number 26

MARINE ENGINES
GM 4 Cylinder 181 cid (3.0L)

MerCruiser # 26 GM 4 Cylinder 181 cid (3.0L) 90-861329–1

Notice

1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011

Throughout this publication, “Dangers”, “Warnings” and “Cautions” (accompanied by the International HAZARD Symbol ) are used to alert the mechanic to special instructions concerning a particular service or operation that may be hazardous if performed incorrectly or carelessly. OBSERVE THEM CAREFULLY!

These “Safety Alerts” alone cannot eliminate the hazards that they signal. Strict compliance to these special instructions when performing the service, plus “Common Sense” operation, are major accident prevention measures.

Models Covered in This Manual

Model Serial Number Model Year MCM 3.0L Alpha OL010042 and Above 1998 Page ii 90-861329–1 MARCH 1999
Service Manual Outline

User and Operator’s Vehicle Manual Guide. Free Auto PDF Manual Download.

Section 1 – Important Information A – General Information
B – Maintenance
C – Troubleshooting

Section 2 – Removal and Installation A – MCM 3.0L (181 CID) – Alpha Drive
Section 3 – Engine
A – 3.0L (181 CID)
Section 4 – Electrical System
A – Starting System
B – Ignition System
C – Charging System
D – Instrumentation
E – Wiring Diagrams
Section 5 – Fuel System
A – Fuel Pump
B – MerCarb 2-Barrel
Section 6 – Cooling System
A – Seawater Cooled Models
B – Closed Cooled Models
Section 7 – Exhaust System
A – Exhaust Manifolds / Elbows
Section 8 – Power Steering
A – Power Steering
Important Information 1
Removal And Installation 2
Engine 3
Electrical System 4
Fuel System 5
Cooling System 6
Exhaust System 7
Power Steering 8

90-861329–1 MARCH 1999 Page iii THIS PAGE IS INTENTIONALLY BLANK Page iv 90-861329–1 MARCH 1999
IMPORTANT INFORMATION1Section 1A – General Information A
Table of Contents

Table of Contents . . . . . . . . . . . . . . . . . . . . . 1A-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A-2
How to Use This Manual . . . . . . . . . . . . . . . 1A-2
Page Numbering . . . . . . . . . . . . . . . . . . . 1A-2
How to Read a Parts Manual . . . . . . . . . . . 1A-3
Directional References . . . . . . . . . . . . . . . . . 1A-4
Engine Rotation . . . . . . . . . . . . . . . . . . . . . . . 1A-4
Engine Serial Number Locations . . . . . . . . 1A-5
Propeller Information . . . . . . . . . . . . . . . . . . 1A-5 Water Testing New Engines . . . . . . . . . . . . 1A-6 Boat and Engine Performance . . . . . . . . . . 1A-6 Boat Bottom . . . . . . . . . . . . . . . . . . . . . . . 1A-6 Marine Fouling . . . . . . . . . . . . . . . . . . . . . 1A-8 Weight Distribution . . . . . . . . . . . . . . . . . . 1A-9 Water in Boat . . . . . . . . . . . . . . . . . . . . . . 1A-9 Elevation and Climate . . . . . . . . . . . . . . . 1A-9

Source: maxumownersclub.com