This manual covers the Case IH Magnum Series tractors, including models 250, 280, 310, 340, and 380, as well as the Magnum Rowtrac Series models 310, 340, and 380. These high-horsepower agricultural tractors are engineered for demanding commercial farm operations and large-scale agricultural enterprises. Notable features include high power output ranging from approximately 250 to 380 horsepower, advanced transmission options such as CVX and Powershift, and enhanced operator comfort. The optional Rowtrac system offers reduced soil compaction, making these tractors versatile and efficient for a wide range of heavy draft work and modern farming practices. This comprehensive Operator's Manual, publication number 47824492, provides essential information for the safe and effective operation and maintenance of your Case IH Magnum tractor. It covers critical systems including the engine, powertrain, hydraulics, electrical systems, operator controls, chassis, and the Rowtrac system where applicable. Detailed procedures for startup, shutdown, driving, working operations, PTO engagement, and hydraulic implement control are included, alongside routine maintenance tasks such as lubrication, fluid changes, and filter replacements. The manual also offers brief troubleshooting guidance for common issues, ensuring that owners and technicians can maintain peak performance and reliability.