This manual pertains to the Liebherr R 912 Litronic excavator, specifically models with serial numbers beginning from 101 and 105, and type numbers 346, 380, and 387. Designed for robust performance, this excavator represents Liebherr's commitment to engineering quality and reliability. Its operational capabilities are intended for a wide range of construction and industrial applications, ensuring efficient and dependable service in demanding environments. This comprehensive operating manual is intended for both machine operators and maintenance personnel. It provides essential information covering product description, crucial safety guidelines, detailed control and operation procedures, troubleshooting guidance for malfunctions, and thorough maintenance instructions. By carefully reading and adhering to the content within, users can ensure proper operation, enhance machine reliability, extend service life, and minimize repair costs and downtime.