This manual covers the Yamaha 75hp and 90hp 4-Stroke EFI Outboard motors manufactured between 2005 and 2009. These engines are engineered for reliable performance, offering efficient power for a variety of marine applications. Their advanced EFI system ensures optimal fuel delivery and smooth operation, making them a trusted choice for boaters seeking dependable propulsion. This comprehensive service and repair manual provides detailed instructions for all maintenance, servicing, and troubleshooting procedures. It includes hundreds of pages of step-by-step guidance, supported by highly detailed exploded diagrams and pictures, to assist owners, mechanics, and technicians in effectively maintaining and repairing these outboard motors. The manual is presented in English and is designed for easy access and use.