This is a COMPLETE Service Repair Manual for the Mercury Mercruiser #10 MARINE ENGINES GM 4 Cylinder. Production model years 1985 1986 1987 1988 1989. This invaluable technical manual includes needed instructions to maintain and service your equipment using detailed diagrams and manufacturers specifications.

MODELS COVERED:
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Models and Serial Number
MCM 120 MR→6853914 to 0A492055
MCM 120 Alpha I→0A492056 to 0B531853
MCM 2.5L→0C856450 and Above
MCM 140 MR→6852270 to 0A484072
MCM 140 Alpha I→0A484073 to 0B450800
MCM 3.0L→0C856450 and Above
Sea Ray 3.0L→0B787205 to B917530

NOTICE:
MCM 2.5L MCM3.0L - Same as MCM 120.
Sea Ray 3.0L-Same as MCM 140 (Later Models are rated at 130 HP and have 9.2:1 Compression ratio.)

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TABLE OF CONTENTS:
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SECTION 1 - Important Information
A - Important Information
B - Maintenance
C - Troubleshooting

SECTION 2 - Removal & Installation
A - 4 Cyl. 153-181 CID (2.5-3.0L)
B - Driveshaft Extension Models

SECTION 3 - Engine Mechanical
A - G.M. In-Line

SECTION 4 - Electrical Systems
A - Starting System
B - Ignition System
C - Charging Systems
D - Instrumentation
E - Electrical Kits
F - Wiring Diagrams

SECTION 5 - Fuel Systems
A - Fuel Delivery System
B - Fuel Pump
C - MerCarb 2-Barrel

SECTION 6 - Cooling & Exhaust
A - Seawater Cooled Models
B - Closed Cooled Models
C - Exhaust Manifolds/Elbows

SECTION 7 - Power Steering
A - Power Steering

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Model Specification: Mercury Mercruiser #10 MARINE ENGINES GM 4 Cylinder
Model Year: 1985-1989
Language: English
Total Pages: 308
File Format: PDF
Requirements: Adobe PDF Reader
ZOOM IN/OUT: YES
Downloadable: YES
Compatible: All Versions of Windows & Mac

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This manual provides detailed service information, step-by-step repair instruction and maintenance specifications for your Mercury Mercruiser #10 MARINE ENGINES GM 4 Cylinder.

This comprehensive overhaul and repair manual is designed as a "Service Guide" for MerCruiser models listed. It provides specific information including procedures for disassembly, assembly, inspection and adjustment, to enable dealers and service mechanics to keep the MerCruiser in top operating condition. The procedures are supplemented with photos and Illustrations.

All Official Mercury Marine Manuals for MerCruiser Sterndrives and Inboards include easy to follow, step-by-step illustrated procedures based on the complete dismantling, repair, and assembling of boat motors, from the simplest repair to complex procedures, this manuals give you everything you need to do the job with confidence.

Save Money $$$$$$ By doing your own repairs! All pages are printable, so run off what you need & take it with you into the garage or workshop.

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