1978-1982 MerCruiser Manual Stern Drive Units MCM 120 to 260
This 1978 1979 1980 1981 1982 INSTANT DOWNLOAD MerCruiser sterndrive repair manual contains an introductory description on and procedures for the inspection, service and overhaul of its main components. General knowledge information is not included. Please read the GENERAL INFORMATION section to familiarize yourself with basic information concerning the inboard engine or stern drive. Read and refer to the other sections in this manual for information regarding proper inspection and service procedures.
TRANSOM ASSEMBLIES COVERED IN THIS MANUAL:
MCM 120 – serial numbers 4891650 to 6216686
MCM 140 – serial numbers 4891650 to 6216686
MCM 165 – serial numbers 4891650 to 6216686
MCM 470 – serial numbers 4891650 to 6216686
MCM 485 – serial numbers 4891650 to 6216686
MCM 898 – serial numbers 4891650 to 6216686
MCM 228 – serial numbers 4891650 to 6216686
MCM 260 – serial numbers 4891650 to 6216686
MC 120 to 260 STERN DRIVE UNITS
Ratio 1.98:1 – serial numbers 4893635 to 6237860
Ratio 1.84:1 – serial numbers 4893835 to 6225576
Ratio 1.65:1 – serial numbers 4890460 to 6268064
Ratio 1.50:1 – serial numbers 4898730 to 6229157
This manual has been prepared using the latest information available at the time of publication. If a modification has been made since then, differences may exist between the content of this manual and the actual stern drive unit or transom assemblies.
Illustrations in this manual are used to show the basic principles of operation and work procedures.
This manual is intended for use by technicians who already possess the basic knowledge and skills to service inboard or stern drive motors and components. Persons without such knowledge and skills should attempt with caution to service any component, sterndrive engine or transom assembly by relying on this manual only. Never attempt to perform any work with out the assistance of this service manual.
Apprentice mechanics or do-it-yourself mechanics that don’t have the proper tools and equipment may or may not be able to properly perform the services described in this manual. Improper repair may result in injury to the mechanic and may render the component unsafe for the boat operator and passengers. Never attempt to work on MerCruiser components without a manual. Important safety precautions, service information and other data may be included.
QUESTIONS AND ANSWERS
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Q. How does the manual appear?
A. Once the manual has been downloaded it appears exactly the same as a repair manual you’d buy in stores. It includes every aspect of repair, step-by-step repair procedures, pictures, illustrations, diagrams, troubleshooting and specifications.
Q. Is the repair manual model and year specific?
A. YES! This is not a generic manual.
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