This manual covers the JCB 804 Super Mini Excavator. The JCB 804 Super is engineered for robust performance and reliability, making it a valuable asset for various construction and landscaping tasks. Its design prioritizes efficiency and operator comfort, reflecting JCB's commitment to quality in heavy equipment manufacturing. This comprehensive Service Repair Workshop Manual provides detailed instructions for maintaining and repairing the JCB 804 Super Mini Excavator. It includes full service and repair procedures, step-by-step guidance, diagrams, illustrations, and wiring schematics. This manual is intended for mechanics, owners with mechanical aptitude, and independent service professionals, enabling them to perform repairs accurately, save time and money, and gain a deeper understanding of the machine's operation. The manual covers serial numbers 734630 to 735365 and 735366 onwards.