This manual covers the Liebherr R 904 C Litronic excavator, with serial numbers beginning from 12305. Designed for demanding operational environments, this machine represents Liebherr's commitment to robust engineering and reliable performance. Its advanced Litronic system and optional tool control provide enhanced efficiency and versatility for a wide range of construction and earthmoving tasks. The R 904 C Litronic is built to deliver power, precision, and durability, ensuring optimal productivity and longevity in professional applications. This comprehensive operating manual is intended for both machine operators and maintenance personnel. It provides essential information for the safe and effective use of the R 904 C Litronic. Key sections include product descriptions, critical safety guidelines, detailed operational procedures, troubleshooting guidance for common malfunctions, and thorough maintenance schedules. Adhering to the instructions within this manual will help maximize the machine's reliability, extend its service life, and minimize repair costs and downtime, ensuring the equipment remains in optimal working condition.