This manual covers the Thomas 135, 137, 153, and 1300 ProTough Skid Steer Loader models. These machines are engineered for demanding tasks, offering robust performance and reliability in various operational environments. Their design prioritizes efficiency and durability, making them a trusted choice for heavy-duty applications. This Full Service & Repair Manual provides comprehensive guidance for maintaining and repairing your Thomas Skid Steer Loader. It details all necessary repair, servicing, and troubleshooting procedures with step-by-step instructions, hundreds of pages, and detailed photos and diagrams. This resource is essential for owners, mechanics, and technicians to ensure the optimal performance and longevity of the equipment.