This manual covers the Mercury Mariner Outboard motor, an 80 HP engine designed for marine applications. Engineered for reliability and performance, this outboard motor is built to provide consistent power and efficiency for a wide range of boating activities. Its robust construction and advanced design ensure dependable operation in various marine environments, making it a trusted choice for recreational and professional use. This comprehensive service repair manual provides detailed instructions for the maintenance, repair, and troubleshooting of your Mercury Mariner Outboard. It includes in-depth coverage of all major systems, including the powerhead, fuel system, ignition, cooling, and lower unit. With clear procedures, technical specifications, and diagnostic information, this manual is an essential resource for owners, technicians, and mechanics seeking to maintain the optimal performance and longevity of their Mercury Mariner Outboard.