This manual covers the Komatsu SK1020-5N and SK1020-5NA Skid Steer Loaders, designed for robust performance and reliability in demanding work environments. These machines represent Komatsu's commitment to engineering excellence, offering powerful solutions for a wide range of construction and material handling applications. With their durable construction and efficient operation, the SK1020-5N and SK1020-5NA are built to meet the rigorous needs of professional users, ensuring productivity and longevity. The purpose of this Service Repair Manual is to provide comprehensive guidance for the maintenance, repair, and troubleshooting of your Komatsu Skid Steer Loader. It includes detailed information on general structure, function, maintenance standards, testing, adjustment procedures, disassembly, assembly, and troubleshooting. This manual is an essential resource for owners, technicians, and mechanics, enabling them to effectively maintain the vehicle's optimal performance and ensure safe operation.