This manual covers the Yamaha 30HP Outboard series, including models such as 30D, 30X, 30U, 30V, C30V, and many others, produced between 1996 and 2005. These versatile outboard engines are available in both 2-stroke and 4-stroke configurations, featuring 2-cylinder and 3-cylinder designs, and deliver a reliable 30 horsepower. Engineered for demanding marine environments, these outboards are recognized for their robust construction and dependable performance, making them a preferred choice for a wide range of watercraft and applications. This comprehensive Service Repair Manual provides essential information for maintaining and repairing your Yamaha 30HP Outboard. It details procedures for routine maintenance, including oil changes, spark plug and fuel filter replacement, and impeller inspection. The manual also covers in-depth troubleshooting for common issues such as starting problems, poor performance, and overheating, along with step-by-step repair instructions for the powerhead, lower unit, fuel system, and electrical components. With clear diagrams and detailed guidance, this manual is an indispensable resource for owners and technicians alike.