This manual covers the Mercury Outboard 45-115hp models manufactured between 1965 and 1989. These outboards are recognized for their robust construction and dependable performance, making them a popular choice for a variety of marine applications. The engineering behind these engines emphasizes durability and efficiency, ensuring a reliable power source for recreational boating and professional use alike. Their widespread adoption is a testament to their consistent quality and the satisfaction they provide to owners.

The purpose of this comprehensive repair manual is to provide detailed information for the maintenance, repair, and servicing of your Mercury Outboard 45-115hp engine. It includes essential technical specifications, step-by-step diagnostic and repair procedures, and important safety guidelines. This resource is designed to assist both experienced technicians and owner-operators in understanding the intricacies of their engine, ensuring optimal performance and longevity through proper care and timely maintenance.