The Komatsu PC200-7 and PC220-7 series represent robust hydraulic excavators engineered for demanding work environments. These machines are powered by the direct injection, water-cooled, 4-cycle SA6D102E diesel engine, with displacement of 5.883 L. The PC200-7 offers a maximum power output of 110 kW, while the PC220-7 delivers 121 kW, both at 2000 rpm. Designed for reliability and efficiency, these excavators feature hydrostatic drive systems and are built to meet EPA Tier 2 and EU Stage II emission standards. Their substantial operating weights, ranging from approximately 19,700 kg for the PC200-7 to 22,500 kg for the PC220-7, underscore their heavy-duty construction suitable for construction, mining, and earthmoving applications. This comprehensive manual serves as an essential resource for the operation, maintenance, and repair of the Komatsu PC200-7 and PC220-7 series excavators. It includes detailed information on engine specifications, including the SA6D102E engine, transmission systems, and fluid capacities for engine oil, hydraulic tank, coolant, and fuel. The manual outlines critical maintenance procedures, such as engine oil and hydraulic filter replacement intervals, and air filter servicing. By providing in-depth technical specifications, troubleshooting guidance, and safety protocols, this document empowers owners, operators, and technicians to ensure the optimal performance, longevity, and safe operation of their equipment.