This workshop service repair manual covers the Mercury Mercruiser 305 CID V8 engine, produced between 1998 and 2001. This engine, featuring a 305 cubic inch displacement, 3.75-inch bore, and 3.48-inch stroke, delivers approximately 200-250 horsepower and is designed for sterndrive applications. It is equipped with electronic ignition and can utilize either raw water or closed cooling systems, with fuel delivery via carburetor or fuel injection. The engine's robust construction and engineering are intended to provide reliable performance for marine use. This comprehensive manual provides detailed information essential for the maintenance, repair, and troubleshooting of your Mercury Mercruiser 305 CID engine. It includes step-by-step procedures for routine maintenance tasks such as oil changes, spark plug replacement, and fuel filter service, along with specific guidance on tune-ups and winterization. Technical specifications, fluid capacities, and service intervals are clearly outlined to assist owners, mechanics, and technicians in ensuring the longevity and optimal performance of the engine.