The International Harvester (IH) Cadet 55 Series represents a robust and versatile line of compact utility tractors, primarily produced in the late 1960s to early 1970s. Built with the renowned durability and mechanical simplicity characteristic of International Harvester equipment, these tractors were designed to serve homeowners, small farm operators, and groundskeepers. They excel in a variety of tasks, including mowing, tilling, snow removal, and light landscaping, often supported by optional PTO and 3-point hitch systems. The Cadet 55's straightforward design makes it an accessible machine for maintenance and repair, contributing to its enduring appeal among collectors and users who value reliable, workhorse machinery. This workshop service repair manual provides comprehensive guidance for the IH International Cadet Tractor 55. It covers all essential aspects of maintenance, troubleshooting, and repair, including detailed procedures for the engine, transmission, electrical system, hydraulics, chassis, braking system, and bodywork. Within its pages, you will find step-by-step instructions for component overhauls, adjustments, and routine maintenance, alongside diagnostic charts to help resolve common issues. Technical specifications, torque values, and fluid recommendations are also included, ensuring that owners, mechanics, and technicians have the necessary information to keep the Cadet 55 operating efficiently and reliably.