This service repair workshop manual covers Case IH tractors, specifically models 2090, 2094, 2290, 2294, 2390, 2394, 2590, and 2594. These tractors, produced primarily between 1979 and 1985, are part of Case IH's strong lineage of agricultural machinery, known for their durability and power. Designed for demanding farm work, these models feature robust construction and significant power output, with engine displacements ranging from approximately 5.9L to 8.3L and horsepower estimates between 90 HP and 150 HP. They offer various transmission options, including manual and optional powershift configurations, alongside standard PTO capabilities. This comprehensive manual provides factory-level information for all repair, servicing, and troubleshooting procedures. It details engine overhaul, transmission and hydraulic system repair, electrical system diagnostics, drivetrain service, and chassis and body maintenance. Covered procedures include scheduled maintenance, fluid changes, filter replacements, and step-by-step instructions for disassembly, repair, and reassembly of all major components. With hundreds of detailed diagrams and illustrations, this manual is an essential resource for professional mechanics, farm technicians, and owners seeking to maintain and repair their Case IH tractors efficiently and accurately.