This manual covers the Kato HD 820III, a robust piece of equipment designed for demanding operational environments. While specific production years are not detailed, the HD 820III is engineered for reliability and efficiency in heavy-duty applications. Its approximate operating weight ranges from 8,000 to 8,500 kg, and it features a bucket capacity of approximately 0.25 to 0.35 m³, making it suitable for a variety of construction and excavation tasks. This comprehensive Service & Repair Workshop Manual provides essential information for maintaining and repairing the Kato HD 820III. It includes detailed exploded diagrams, numerous photos, and troubleshooting procedures to assist users. The manual is presented in English and contains hundreds of pages of technical specifications, maintenance schedules, and repair guidance, ensuring that owners and technicians have the resources needed to keep the equipment in optimal working condition.