This comprehensive service repair manual provides detailed instructions and technical specifications for a wide range of Mercury Mercruiser stern drive units and marine engines manufactured between 1963 and 1973. Whether you're a seasoned professional technician or a first-time boat owner, this manual will guide you through various maintenance and repair procedures, ensuring you have the necessary information for accurate and efficient work.

The manual covers a comprehensive range of MerCruiser models, including the MCM 60, 80, 90, 110, 120, 140 (both 6 and 4 cylinder), 150, 160, 165, 888, 190 (V-8), 200 (6 cylinder), 215, 225 (GM and Ford), 250 (327 CID), 255TR (Ford), 270, 310, 325, and 390 engines. Additionally, it covers transom assemblies and stern drive units such as the MCO, MCI, MCTNB/C, MCINB/C E-2, MC80, MC90, MC 120, MC 140, MC 160, MC 165, MC888, MCM 215 H, MCM 215 E, MCTR, MCII, and MCIII. The manual even includes information on MerCruiser inboard engines, including the MIE 30, 55, 215, 225 (GM and Ford), 250 (327 CID), 255 (Ford), 270, 325, and 390 models.

This manual is designed for ease of use with clear and concise instructions, ensuring you can confidently perform a wide range of tasks, from simple tune-ups and lubrication to complex engine and drive system repairs. The comprehensive table of contents allows for quick navigation to the specific topic you need, making the information readily accessible. To aid in your troubleshooting and repair efforts, the manual includes detailed wiring diagrams for the electrical systems, covering starting, ignition, alternator, and instrumentation. Additionally, you will find extensive coverage of fuel systems, including fuel pumps and carburetors.

The manual also features detailed sections on engine mechanical components for both in-line and V-8 models, as well as comprehensive information on drive systems, covering MerCruiser 60-80-90, MerCruiser I, II, III, 215, and II-TR. You'll also find valuable insights into accessories such as power tilt and trim, steering systems, remote controls, cooling systems, and general accessories. To further assist you in your work, the manual includes a comprehensive specifications section and an overview of the necessary tools.

This manual will serve as your essential tool for maintaining and repairing your Mercury Mercruiser stern drive units and marine engines. By following the detailed instructions and utilizing the technical information provided, you can ensure your boat operates smoothly and reliably for years to come.