The KATO HD820III Hydraulic Excavator, including the HD820III-LC variant, represents a robust and reliable piece of heavy machinery designed for demanding construction and excavation tasks. Built with precision engineering, this model, identified by serial numbers 9379107 and up, incorporates advanced features to ensure optimal performance and durability in challenging environments. Its powerful Mitsubishi 6D34 diesel engine, a 5.9L turbocharged and intercooled 6-cylinder unit, provides the necessary strength for a wide range of applications, underscoring KATO's commitment to quality and operational efficiency. This comprehensive Workshop Service Repair Manual provides essential information for the maintenance and repair of your KATO HD820III Hydraulic Excavator. It covers critical systems including hydraulics, engine, controls, and electrical components, offering detailed, step-by-step instructions and numerous illustrations. Inside, you will find sections on lubrication, periodic replacements, technical specifications, and troubleshooting guidance, equipping owners, mechanics, and technicians with the knowledge needed to keep the equipment in peak operating condition.