The Komatsu PC340LC-6K Hydraulic Excavator is a robust and powerful machine designed for demanding construction and earthmoving applications. Featuring a Komatsu SAA6D114E-3 engine with a displacement of 11.04 L and an output of 250 HP, this excavator meets Tier 3 / Stage IIIA emission standards. Its hydrostatic, electronically controlled transmission and 2-speed planetary travel motors ensure efficient operation and maneuverability. With an operating weight of 33,750 kg and dimensions including a length of 10.33 m with the bucket, a width over tracks of 3.35 m, and a height to the top of the cab of 3.18 m, the PC340LC-6K is engineered for stability and performance on challenging job sites. This comprehensive manual, presented as a collection of two English files, serves as an essential resource for maintaining and operating the Komatsu PC340LC-6K Hydraulic Excavator. It covers critical aspects such as engine specifications, transmission details, fluid capacities, and lubrication schedules, including engine oil changes every 500 hours and hydraulic oil changes every 4000 hours. Additionally, the manual provides information on performance metrics like bucket capacity and digging depth, as well as safety guidelines. Owners, operators, and service technicians will find detailed procedures and technical data within to ensure the longevity, reliability, and optimal performance of their equipment.