This manual covers the Komatsu SK1020-5N and SK1020-5NA Skid Steer Loaders, designed for robust performance in demanding work environments. These machines are engineered for reliability and efficiency, offering powerful capabilities for a wide range of service, repair, and maintenance tasks. Their construction reflects a commitment to durability and operational excellence, ensuring they meet the rigorous demands of professional use. The purpose of this Service Repair Workshop Manual is to provide comprehensive guidance for maintaining and repairing your Komatsu Skid Steer Loader. It details general information, structure and function, maintenance standards, standard value tables, testing and adjusting procedures, troubleshooting, disassembly and assembly, and includes diagrams and schematics. This manual is an essential resource for owners, mechanics, and technicians to ensure the longevity and optimal performance of the SK1020-5N and SK1020-5NA models.