This manual covers the Hyundai HSL810 Skid Steer Loader, a versatile machine designed for a wide range of construction, landscaping, and material handling tasks. Engineered for durability and performance, the HSL810 features a robust diesel engine and a hydrostatic transmission, ensuring efficient power delivery and precise control. Its four-wheel-drive system provides excellent traction in demanding conditions, while integrated safety features such as a Roll-over Protective Structure (ROPS), Operator Presence System, and Safety Interlocks are paramount for operator protection. This skid steer loader is built to meet the rigorous demands of professional use. The purpose of this comprehensive Service Repair Manual is to provide detailed information for the maintenance, repair, and troubleshooting of the Hyundai HSL810 Skid Steer Loader. It includes essential technical specifications, diagnostic procedures, and step-by-step instructions for various service operations. Owners, technicians, and mechanics will find guidance on routine maintenance schedules, fluid capacities, lubrication points, and the proper use of tools and equipment. This manual is an indispensable resource for ensuring the longevity, reliability, and optimal performance of your HSL810.