This manual covers the CASE CX290B Crawler Excavator, a robust machine engineered for demanding construction and earthmoving applications. Built with a focus on reliability and performance, the CX290B is equipped with an ISUZU 6HK1 engine, ensuring powerful operation. Its design emphasizes durability and efficiency, making it a trusted choice for various heavy-duty tasks. This comprehensive service repair manual set is provided in English and details the intricacies of this advanced piece of equipment. The purpose of this extensive manual is to provide detailed information for the repair, servicing, technical maintenance, and troubleshooting of the CASE CX290B Crawler Excavator. It encompasses a wide range of critical systems, including engine mechanicals, cooling, fuel, and electrical systems, as well as undercarriage, drivetrain, and hydraulics. Owners, mechanics, and technicians will find step-by-step procedures, diagnostic guidance, and technical specifications, including large-format hydraulic and electrical schematics, to ensure the optimal functioning and longevity of the excavator.