This service repair manual covers Mercury Mercruiser #4 Stern Drive Units MCM 120-260, manufactured between 1978 and 1982. These units are designed for boat motors, specifically MerCruiser Sterndrives and Inboards, and are part of the MCM 120-260 Series. The power output ranges from 120 HP to 260 HP, with various inline and V-configuration engines supported. Specific transom assemblies covered include MCM 120/140/165/470/485/898/228/260 models.
This comprehensive manual provides detailed information essential for the maintenance and repair of your Mercury Mercruiser stern drive. It includes step-by-step instructions for disassembly and assembly, inspection and adjustment procedures, troubleshooting guides, and coverage of critical components such as the drive shaft housing, transom plate assembly, power trim, and power steering systems. Drive unit ratios and gear housing assembly details are also included, ensuring owners and technicians have the necessary resources to keep these units operating optimally.
This is a COMPLETE Service Repair Manual for the Mercury Mercruiser #4 Stern Drive Units MCM 120-260. Production model years 1978 1979 1980 1981 1982. This invaluable technical manual includes needed instructions to maintain and service your equipment using detailed diagrams and manufacturers specifications.
MODELS COVERED:
========
TRANSOM ASSEMBLIES
Model ------ Serial Number:
MCM 120/140/165/470/485/898/228/260 - S/N : 4891650 - 6216686
MC 120 - 260 STERN DRIVE UNITS
Ratio ------ Serial Number
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 PDF Reader
ZOOM IN/OUT: YES
Downloadable: YES
Compatible: All Versions of Windows & Mac
______________________________
This manual provides detailed service information, step-by-step repair instruction and maintenance specifications for your Mercury Mercruiser #4 Stern Drive Units MCM 120-260.
This comprehensive overhaul and repair manual is designed as a "Service Guide" for MerCruiser models listed. It provides specific information including procedures for disassembly, assembly, inspection and adjustment, to enable dealers and service mechanics 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, this manuals give you everything you need to do the job with confidence.
Save Money $$$$$$ By doing your own repairs! All pages are printable, so run off what you need & take it with you into the garage or workshop.
INSTANT DOWNLOAD means NO SHIPPING COST or WAITING FOR A CD OR PAPER MANUAL TO ARRIVE IN THE MAIL...YOU WILL RECEIVE THIS MANUAL TODAY VIA INSTANT DOWNLOAD ON COMPLETION OF PAYMENT VIA OUR SECURE PAYMENT PROCESSOR. WE ACCEPT ALL MAJOR CREDIT/DEBIT CARDS/PAYPAL.
Looking for some other Service Repair Manual, please check:
Thanks for visiting!
This is a COMPLETE Service Repair Manual for the Mercury Mercruiser #4 Stern Drive Units MCM 120-260. Production model years 1978 1979 1980 1981 1982. This invaluable technical manual includes needed instructions to maintain and service your equipment using detailed diagrams and manufacturers specifications.
MODELS COVERED:
========
TRANSOM ASSEMBLIES
Model ------ Serial Number:
MCM 120/140/165/470/485/898/228/260 - S/N : 4891650 - 6216686
MC 120 - 260 STERN DRIVE UNITS
Ratio ------ Serial Number
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 PDF Reader
ZOOM IN/OUT: YES
Downloadable: YES
Compatible: All Versions of Windows & Mac
______________________________
This manual provides detailed service information, step-by-step repair instruction and maintenance specifications for your Mercury Mercruiser #4 Stern Drive Units MCM 120-260.
This comprehensive overhaul and repair manual is designed as a "Service Guide" for MerCruiser models listed. It provides specific information including procedures for disassembly, assembly, inspection and adjustment, to enable dealers and service mechanics 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, this manuals give you everything you need to do the job with confidence.
Save Money $$$$$$ By doing your own repairs! All pages are printable, so run off what you need & take it with you into the garage or workshop.
INSTANT DOWNLOAD means NO SHIPPING COST or WAITING FOR A CD OR PAPER MANUAL TO ARRIVE IN THE MAIL...YOU WILL RECEIVE THIS MANUAL TODAY VIA INSTANT DOWNLOAD ON COMPLETION OF PAYMENT VIA OUR SECURE PAYMENT PROCESSOR. WE ACCEPT ALL MAJOR CREDIT/DEBIT CARDS/PAYPAL.
Looking for some other Service Repair Manual, please check:
Thanks for visiting!
