This Service Repair Manual covers Mercury Mercruiser Marine Engines from model years 1998 through 2001, specifically focusing on the GM V8 generation. These robust engines, available in 305 CID (5.0L) and 350 CID (5.7L) displacements, are engineered for reliability and performance in marine applications. The manual details both carbureted and Electronic Fuel Injection (EFI) systems, as well as various marine transmissions including Velvet Drive and Hurth models. Its comprehensive content ensures users can maintain and understand these powerful marine propulsion systems. The purpose of this manual is to provide detailed technical information and procedural guidance for the maintenance, troubleshooting, and repair of the specified Mercury Mercruiser engines and transmissions. It includes extensive coverage of electrical systems, fuel systems, cooling systems, exhaust systems, and power steering. With step-by-step instructions, diagrams, illustrations, and photos, this 895-page English language manual serves as an essential resource for owners, technicians, and mechanics. It offers workshop-level detail, enabling efficient and accurate service for these marine engines.