This Service Repair Workshop Manual provides comprehensive information for the Thomas 173 HL S II Series Skid Steer Loader, covering serial numbers LK000930 and onward. Engineered for reliability and performance, the Thomas 173 HL S II Series is a robust skid steer loader designed for demanding operational environments. Its construction emphasizes durability and efficiency, making it a dependable choice for a wide range of industrial and construction applications. This manual is meticulously designed to assist both do-it-yourself enthusiasts and experienced mechanics in maintaining and repairing the Thomas 173 HL S II Series. It details procedures for complete disassembly and covers critical systems including the engine, hydraulic, hydrostatic drive, final drive, controls, electrical system, and main frame. With step-by-step instructions, high-quality diagrams, and detailed exploded views, this English-language manual ensures clarity and accuracy for all service, repair, and maintenance tasks.