This comprehensive service and repair manual provides detailed instructions and technical information for the MERCURY MARINER 850HP 85HP 4 CYL. OUTBOARD ENGINE, covering model years 1973-1977. This manual is designed for both experienced mechanics and do-it-yourself enthusiasts, offering clear and concise text sections paired with high-quality diagrams and illustrations. Within the manual, you'll find step-by-step instructions for a wide range of maintenance and repair procedures, ensuring you can confidently tackle any job. Exploded diagrams are included to help you visualize the disassembly and reassembly process, making it easy to identify and locate individual parts. The manual covers every aspect of your engine, including troubleshooting, allowing you to pinpoint and resolve issues efficiently. This service manual is your ultimate resource for maintaining and repairing your MERCURY MARINER 850HP 85HP 4 CYL. OUTBOARD ENGINE, empowering you to keep your engine running smoothly for years to come. With its detailed content and clear presentation, this manual eliminates the need for multiple resources, providing a complete solution for all your service and repair needs.

The Mercury Mariner 850HP 85HP 4 CYL. outboard engine, produced between 1973 and 1977, was a powerful and reliable workhorse for boaters of its era. This four-cylinder, two-stroke engine boasted a displacement of 85 cubic inches, generating a substantial 85 horsepower. This robust power output, combined with a compact design, made it a popular choice for a variety of applications, from fishing boats and runabouts to small cruisers. Its reputation for durability and performance was further enhanced by the inclusion of features like a single-lever control, a high-performance engine, and a streamlined design. The Mariner 850HP 85HP 4 CYL. engine was designed for ease of use and maintenance. Its simple yet effective design incorporated features such as a durable, cast-iron powerhead, a robust crankshaft, and a dependable ignition system. It also featured a manually operated throttle and shift system, making it easy to control. Though it lacked the advanced technology found in modern outboard engines, its simplicity and ruggedness ensured a long service life with minimal maintenance. Owners appreciated its ability to handle a range of boating activities, making it a versatile and reliable choice for various marine applications.