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!