Mercury Mercruiser #4 Stern Drive Units MCM 120-260 Service Repair Manual 1978-1982

This is a comprehensive service repair manual for the Mercury Mercruiser #4 Stern Drive Units MCM 120-260, covering production model years 1978 to 1982. This invaluable technical manual provides detailed instructions, diagrams, and manufacturers' specifications for maintaining and servicing your equipment.

Models Covered:

• Transom Assemblies:
  • MCM 120/140/165/470/485/898/228/260 - S/N : 4891650 - 6216686
• MC 120 - 260 Stern Drive Units:
  • 1.98:1 - S/N: 4893635 - 6237860
  • 1.84:1 - S/N: 4893835 - 6225576
  • 1.65:1 - S/N: 4890460 - 6268064
  • 1.50:1 - S/N: 4898730 - 6229157

Table of Contents:

1. General Information
2. Troubleshooting
3. Drive Unit
   • A - Drive Shaft Housing Assembly
   • B - Gear Housing Assembly
4. Transom Plate Assembly
5. Power Trim
6. Power Steering
7. Service Bulletins

Model Specification: Mercury Mercruiser #4 Stern Drive Units MCM 120-260

Model Year: 1978-1982

Language: English

Total Pages: 230

File Format: PDF

Requirements: Adobe Reader

Zoom In/Out: Yes

Printable: Yes

Compatible: All Versions of Windows & Mac

This manual offers detailed service information, step-by-step repair instructions, and maintenance specifications for your Mercury Mercruiser #4 Stern Drive Units MCM 120-260. It serves as a "Service Guide" for the listed MerCruiser models, providing specific information on 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 simple repairs to complex procedures, these manuals provide everything needed to confidently complete the job.

Save money by doing your own repairs! All pages are printable, allowing you to take the manual with you into the garage or workshop.