This manual covers the Mercury Mariner outboard engine, a powerful and reliable choice for marine applications, produced between 1992 and 2000. Designed with robust engineering, the Mariner is known for its performance and durability, featuring a 150 HP engine with Electronic Fuel Injection (EFI) for efficient operation. This engine is an Inline 4-Cylinder unit, engineered to provide consistent power and a smooth boating experience, making it suitable for a wide range of watercraft and activities. The purpose of this comprehensive Service Repair Manual is to provide detailed guidance for the maintenance and repair of your Mercury Mariner outboard. It covers essential procedures, technical specifications, and troubleshooting steps necessary to keep your engine in optimal condition. This manual is an indispensable resource for owners, mechanics, and technicians, offering clear instructions and diagrams to ensure proper service, longevity, and peak performance of the engine throughout its operational life.