This Parts Manual covers the Thomas 173 HLS II Skid Steer Loader, identified by serial numbers LK000930 through LK001899. Engineered for demanding applications, this skid steer loader features a robust hydrostatic drive system and a reliable final drive transmission, ensuring efficient operation and durability in various work environments. Its design prioritizes performance and longevity, making it a dependable choice for service and repair tasks. This English-language Parts Manual provides comprehensive coverage of the Thomas 173 HLS II. It details all essential components, including the main frame, controls, final drive transmission, hydraulic system, hydrostatic drive system, electrical system, engine equipment, and optional equipment. The manual is intended to assist owners and service technicians in identifying parts, understanding assembly, and performing necessary maintenance and repairs to keep the equipment in optimal working condition.