This manual covers the LIEBHERR R 912 LITRONI EXCAVATOR HD-S 481, specifically for units from serial number 4001 onwards. This excavator is engineered for demanding operational environments, combining robust construction with advanced hydraulic systems to deliver exceptional performance and reliability. Its design prioritizes efficiency and durability, making it a trusted choice for heavy-duty excavation tasks across various industries. The purpose of this comprehensive operation and maintenance manual is to provide essential information for the safe and effective use, servicing, and repair of your LIEBHERR R 912 LITRONI EXCAVATOR HD-S 481. It details operating procedures, routine maintenance schedules, troubleshooting guidance, and technical specifications. Adhering to the instructions within this manual will help ensure optimal performance, longevity, and safety of the equipment.