This manual covers the Liebherr A 900 C ZW Litronic hydraulic excavator, identified by serial numbers from 56996 and type numbers 1030, 1031, and 1032. Designed for demanding operational environments, this machine exemplifies Liebherr's commitment to robust engineering and reliable performance. The A 900 C ZW Litronic is built to deliver efficient power and precise control, making it a valuable asset for various construction and material handling tasks. Understanding its operational capabilities and maintenance requirements is crucial for maximizing its service life and productivity. This comprehensive operating manual is intended for both machine operators and maintenance personnel. It provides essential information covering product description, safety guidelines, control and operation procedures, troubleshooting common malfunctions, and detailed maintenance instructions. By carefully studying and adhering to the content within this manual, users can ensure proper operation, prevent unintended issues, enhance the machine's reliability, extend its operational lifespan, and reduce repair costs and downtime. The manual is designed to be a readily accessible resource for all work performed on or with the machine.