The Komatsu PC210-8 Hydraulic Excavator, identified by serial numbers K50001 and up, represents a robust and reliable piece of heavy machinery engineered for demanding excavation tasks. Powered by a Komatsu SAA6D107E-1 engine, this excavator features direct injection, turbocharging, and intercooling, delivering a net power of 110 kW (148 HP) and meeting EPA Tier 3/EU Stage III emissions standards. Its hydrostatic transmission and 4-wheel drive system, combined with an operating weight of 21,700 kg, ensure efficient power transfer and stability across various job sites. With a bucket capacity ranging from 0.77 to 1.10 m³ and impressive digging capabilities, the PC210-8 is designed for optimal performance and productivity in construction and earthmoving applications. This comprehensive Service and Operating Manual, presented in English and available as a collection of digital files, serves as an essential resource for maintaining and repairing the Komatsu PC210-8 Hydraulic Excavator. It provides detailed information on critical maintenance procedures, including engine oil and hydraulic oil capacities, along with recommended service intervals for oil changes and filter replacements. Furthermore, the manual covers technical specifications, troubleshooting guidance, and safety protocols, equipping owners, mechanics, and technicians with the knowledge required to ensure the longevity, efficiency, and safe operation of their equipment.