This highly detailed repair manual covers all repairs and servicing. All technical details taken directly from the manufacturer can be found in this manual, It is the factory manual from the manufacturer. 1985-1989 Mercury Mercruiser Marine Engines Number 10 GM 4 Cylinder service repair manual is the same manual used by professional technicians, mechanics and workshops around the world.


1985-1989 Mercury Mercruiser Marine Engines Number 10 GM 4 Cylinder service repair manual has easy to read text sections with top quality diagrams and instructions, will guide you through fundamentals of maintaining and repairing, step-by-step, to teach you what the factory trained technicians already know by heart. For that reason, you will not find it difficult to repair or to maintain some of the innovative features loaded on the vehicle when you have the manual. Using this repair manual is the true way to keep your vehicle working properly.



Model Serial Number Covers:

MCM 120 MR
SN:6853914 to 0A492055

MCM 120 Alpha I
SN:0A492056 to 0B531853

MCM 2.5L
SN:0C856450 and Above

MCM 140 MR
SN:6852270 to 0A484072

MCM 140 Alpha I
SN:0A484073 to 0B450800

MCM 3.0L
SN:0C856450 and Above

Sea Ray 3.0L
SN:0B787205 to B917530

Service Repair Manual Covers:

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 and Exhaust
A – Seawater Cooled Models
B – Closed Cooled Models
C – Exhaust Manifolds/Elbows

SECTION 7 – Power Steering
A – Power Steering
And More……

More Theres——–


** Total Pages: 308
** File Format: PDF
** Language: English
** Requirements: Adobe PDF Reader & WinZip
** Compatible: All Versions of Windows & Mac, Linux OS, Iphone, Ipad, Android etc…


NO waiting! You will have instant access to your download! All pages are printable, No shipping fee, No waiting nervously for the postal delivery, you can start doing your repairs right away!

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