The Komatsu PC290NLC-6K Hydraulic Excavator, designed for robust performance and reliability, is a powerful machine engineered for demanding construction and earthmoving applications. Featuring a Komatsu SAA6D102E-2 turbocharged, aftercooled, direct injection diesel engine, it delivers a net power of 153 kW (205 HP) and impressive torque for efficient operation. Its hydrostatic, 2-speed travel system allows for versatile maneuverability on various job sites. With an operating weight of 27,600 kg and a narrow gauge track configuration, this excavator is built for stability and productivity in diverse environments. This manual provides comprehensive guidance for the Komatsu PC290NLC-6K Hydraulic Excavator, serial numbers K30001 and up. It includes essential information from the Service Manual and Operating Manual, covering detailed maintenance procedures, troubleshooting techniques, technical specifications, and crucial safety guidelines. This resource is designed to assist owners, mechanics, and technicians in effectively maintaining, operating, and repairing the equipment, ensuring its optimal performance and longevity.