This manual covers the Yamaha 80 Jet V4, produced between 1987 and 1996. This water-cooled, 2-stroke V4 engine, with a displacement of 1730cc, is designed for reliable performance. Its engineering reflects a commitment to durability and efficiency, making it a capable option for its intended applications. This comprehensive Service Repair Workshop Manual provides detailed information for maintaining and repairing your Yamaha 80 Jet V4. It includes essential sections on general maintenance, tune-up procedures, lubrication, troubleshooting guides, wiring diagrams, and in-depth repair procedures for the powerhead, lower unit, fuel system, electrical system, remote control, trim and tilt, and starter. This manual is an indispensable resource for owners and technicians alike, ensuring the longevity and optimal performance of the watercraft.