This workshop service repair manual covers the Yamaha Marine 115C and 130C outboard motors manufactured between 2003 and 2006. These water-cooled, fuel-injected, in-line 4-cylinder outboard motors offer reliable performance for a variety of marine applications, with power outputs of 115 HP and 130 HP respectively. Their robust engineering is designed for durability and efficiency, making them a trusted choice for boaters. This comprehensive English-language manual provides detailed guidance for owners and experienced mechanics alike. It includes step-by-step repair procedures, hundreds of photos and illustrations, and essential notes, cautions, and warnings to ensure proper maintenance and repair. Coverage extends to all major systems, including periodic checks, fuel system maintenance, power unit and lower unit servicing, and electrical system upkeep. Troubleshooting assistance and wiring diagrams are also included to facilitate effective problem diagnosis and resolution.