This workshop service repair manual covers the Mercury Mariner 175 HP EFI outboard motor, manufactured between 1992 and 2000. This first-generation model is a robust 2-stroke outboard engine, featuring electronic fuel injection and a displacement of approximately 2.6 liters, delivering a powerful 175 horsepower. Engineered for reliability and performance, this engine is designed for a wide range of marine applications, offering a dependable power source for boating enthusiasts. Its six-cylinder configuration and advanced EFI system contribute to its efficient operation and consistent power delivery on the water. This comprehensive manual provides essential information for the maintenance, repair, and troubleshooting of your Mercury Mariner 175 HP EFI. It details critical procedures, including lubrication requirements with recommended TC-W3 certified 2-stroke oil and specific oil-fuel ratios, as well as gear lube capacity. Scheduled maintenance intervals for components like spark plugs, water pump impellers, and fuel filters are clearly outlined. Technical specifications, such as engine type, displacement, power output, and gear ratios, are included to assist owners, mechanics, and technicians in understanding and servicing this engine effectively.