This manual covers the Fiat Trattori 80-90 tractor, a robust agricultural machine known for its performance and reliability. As part of the esteemed Fiat 90 series, this tractor embodies the engineering quality that defined its production era, likely spanning the late 1980s and early 1990s. Designed for demanding agricultural tasks, the 80-90 is built to provide dependable service, making it a valuable asset for professional operators and dedicated mechanics alike. This comprehensive service repair manual provides full coverage for the Fiat Trattori 80-90. It details essential maintenance procedures, diagnostic strategies, and step-by-step repair instructions for all major systems, including the engine, transmission, and electrical system. With professional-level technical depth, clear illustrations, and integrated notes, cautions, and warnings, this manual serves as an indispensable resource for owners and technicians aiming to maintain, troubleshoot, and restore their tractor to optimal working condition.