The McCormick XTX Series Tractors, including models XTX185, XTX200, and XTX215, represent a robust line of agricultural machinery from McCormick Tractors, typically produced in the mid-to-late 2000s and early 2010s. These tractors are engineered for demanding agricultural tasks, combining power with advanced electronic management systems. While specific engine details are covered in a separate manual, this series is known for its sophisticated transmission systems, including an 8-speed Powershift transmission, and advanced features like independent front suspension. Their design prioritizes reliability and performance in various field conditions. This comprehensive workshop service repair diagnostic manual provides factory-level technical information essential for the maintenance and repair of McCormick XTX Series Tractors. Spanning over 1400 pages, it covers a wide array of systems, including electrical troubleshooting, steering, transmission, brake, and hydraulic systems, along with detailed coverage of various controller systems and their diagnostics. The manual includes tune-up procedures, regular maintenance schedules, detailed repair instructions, and troubleshooting guides, all supported by numerous diagrams and illustrations. It is an indispensable resource for tractor owners, technicians, and agricultural repair shops seeking to ensure optimal performance and longevity of their equipment.