This manual covers Yamaha 150A/150F/L150F/D150H/175D Series Outboard Motors. These gasoline-powered, 4-cylinder outboard motors feature Electronic Fuel Injection (EFI) and a TCI ignition system, delivering robust performance with 150 HP or 175 HP options. Designed for reliable marine propulsion, they utilize a water-cooled system and are available with various shaft lengths and gear ratios to suit diverse boating needs. Their engineering emphasizes durability and efficiency, making them suitable for a wide range of applications.

This comprehensive Service Repair Manual provides essential information for maintaining and repairing your Yamaha outboard motor. It details critical procedures, technical specifications, and troubleshooting guidance necessary for optimal performance and longevity. Covered topics include lubrication, electrical systems, cooling, fuel systems, and transmission. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the continued reliability and proper functioning of these high-quality marine engines.