The International Harvester (IH) Cub Cadet 154, 184, and 185 tractors, produced primarily in the late 1960s and early 1970s, represent a lineage of robust and versatile machinery designed for utility and property maintenance. Known for their durable construction and reliability, these tractors were popular in agricultural and landscaping sectors, capable of handling a wide array of tasks through various attachments. Powered by air-cooled, four-cycle Kohler gasoline engines ranging from approximately 8 to 15 horsepower depending on the model, these tractors feature manual gear reduction transmissions and shaft-driven rear axles, embodying a functional design focused on performance and longevity. This comprehensive service manual provides in-depth coverage for the repair, maintenance, and troubleshooting of the IH Cub Cadet 154, 184, and 185 tractor models. It is intended for both professional technicians and do-it-yourself mechanics, offering factory-level detail on all major systems, including the engine, drivetrain, hydraulics, electrical, and chassis. The manual guides users through scheduled maintenance procedures, step-by-step repair instructions, technical adjustments, and diagnostic charts to resolve common issues, ensuring the continued optimal performance and longevity of these dependable tractors.