This manual covers Yamaha 50G/60F/70B/90A Outboard models, designed as reliable outboard motors for various marine applications. Yamaha is recognized for its engineering quality and commitment to performance, ensuring these outboards deliver dependable power and efficiency on the water. This service repair workshop manual provides in-depth information to support the operation and longevity of your Yamaha outboard. This comprehensive manual is designed to assist owners, mechanics, and technicians in maintaining and repairing Yamaha 50G/60F/70B/90A Outboard motors. It includes detailed step-by-step instructions for repairs and servicing, troubleshooting guidance for common issues, and essential technical specifications. With hundreds of pages of content, featuring detailed photos, diagrams, and exploded views, this English-language manual offers professional-level documentation to ensure your outboard motor operates at its best.