The Komatsu PC290LC-6K Hydraulic Excavator, designed for demanding construction and earthmoving applications, represents a robust and reliable piece of equipment. Featuring a powerful Cummins QSL8.9-C220 engine, this excavator delivers 162 kW (217 HP) with a maximum torque of 900 Nm at 1400 rpm, ensuring efficient operation. Its hydrostatic transmission with two speeds allows for versatile travel capabilities, from 3.0 km/h in low gear to 5.5 km/h in high gear. With an operating weight of 28,800 kg and substantial dimensions, including a length with bucket of 10520 mm and width over tracks of 3200 mm, the PC290LC-6K is engineered for stability and performance in challenging environments. This comprehensive manual collection, provided in English, covers both the Service Manual and Operating Manual for the Komatsu PC290LC-6K, serial numbers K30001 and up. It serves as an essential resource for owners, operators, and maintenance technicians. Within its pages, you will find detailed information on routine maintenance procedures, including fluid capacities and service intervals for engine oil and hydraulic filters, as well as troubleshooting guidance, technical specifications, and critical safety information. This manual is designed to help ensure the longevity, optimal performance, and safe operation of your hydraulic excavator.