1985-1989 Mercury Mercruiser Marine Engines Number 10 GM 4 Cylinder Service Repair Workshop Manual

This workshop manual is a highly detailed factory service repair manual for the 1985-1989 Mercury Mercruiser Marine Engines Number 10 GM 4 Cylinder. It provides step-by-step instructions and detailed illustrations, making it suitable for both do-it-yourself enthusiasts and experienced mechanics. The manual covers the complete disassembly of the machine, offering a level of detail that includes hundreds of photos and illustrations to guide the reader through each service and repair procedure.

The manual covers the following model serial numbers:

• 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

The service repair manual covers the following sections:

• 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

The manual comes in PDF format and is compatible with all versions of Windows and Mac. It is written in English and requires Adobe Reader and Win to access. This comprehensive manual is an invaluable resource for maintaining and repairing your vehicle.