This manual covers the Yamaha 15ELF outboard motor, manufactured in 1989. Designed for marine propulsion, this 15 horsepower, 2-stroke gasoline engine features an inline configuration and a water-cooled system, making it suitable for operation in both freshwater and saltwater environments. Yamaha is recognized for its engineering quality and reliability, and the 15ELF embodies these principles for dependable performance on the water. The purpose of this comprehensive Service Repair Maintenance manual is to provide detailed guidance for owners, mechanics, and technicians. It covers essential maintenance procedures, repair operations including disassembly, assembly, inspection, and troubleshooting. The manual is presented in English, in a bookmarked and searchable format, featuring step-by-step instructions and exploded diagrams to facilitate understanding and execution of all service tasks.