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1985-1989 Mercury Mercruiser #10 MARINE ENGINES GM 4-Cylinder Workshop Service Repair Manual Download

This manual can be used by anyone from a first time owner/amateur to a professional https://www.tradebit.comy to read type,And give you all the information needed to do the procedure correctly.


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

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.)


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

Keep this shop manual handy and use it often. Performing routine,preventive maintenance will save you time & money by helping to prevent premature failure and unnecessary repairs.

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File Size 29 megabytes
File Type PDF
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