This is a comprehensive service repair manual for the Mercury Mercruiser #10 MARINE ENGINES GM 4 Cylinder, covering production model years 1985 to 1989. It contains invaluable technical instructions, detailed diagrams, and manufacturers' specifications for maintaining and servicing your equipment.
Models Covered:
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.)
Table of Contents:
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
Model Specification: Mercury Mercruiser #10 MARINE ENGINES GM 4 Cylinder Model Year: 1985-1989 Language: English Total Pages: 308 File Format: .PDF Requirements: Adobe Reader Zoom In/Out: Yes Printable: Yes Compatible: All Versions of Windows & Mac
This manual provides detailed service information, step-by-step repair instructions, and maintenance specifications for your Mercury Mercruiser #10 MARINE ENGINES GM 4 Cylinder. It is designed as a "Service Guide" for MerCruiser models listed, providing specific information including procedures for disassembly, assembly, inspection, and adjustment 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, these manuals give you everything you need to do the job with confidence.
Save money by doing your own repairs! All pages are printable, so you can run off what you need and take it with you into the garage or workshop.
