This workshop service repair manual covers the 150 HP EFI Outboard models manufactured between 1992 and 2000. Engineered for reliability and performance, these outboard engines are known for their robust design and efficient Electronic Fuel Injection (EFI) system. This manual is an essential resource for understanding the intricacies of your outboard, ensuring optimal operation and longevity. This comprehensive guide provides detailed, step-by-step instructions for all maintenance and repair procedures. It includes information on the engine's powerhead overhaul, cooling system, oil injection, charging, starting, and ignition systems, as well as the outboard lower unit, including both right and left-hand rotation models and jet outboards. With hundreds of photos and illustrations, along with critical notes, cautions, and warnings, this manual is designed to assist owners, mechanics, and technicians in effectively maintaining and troubleshooting their 150 HP EFI Outboard.