This comprehensive service and repair manual is a must-have for anyone looking to maintain and repair their JCB 802.7 plus, 802.7 super, 803 plus, 803 super, 804 plus, or 804 super mini excavator. The manual covers a wide range of topics, from basic maintenance procedures to in-depth repair instructions for every component of the machine. With detailed diagrams and clear instructions, the manual is designed to be user-friendly, making it easy for both experienced mechanics and DIY enthusiasts to understand and perform repairs. Whether you need to replace a hydraulic hose, troubleshoot an electrical issue, or simply perform routine maintenance, this manual provides the information you need to get the job done right. The manual covers a wide range of topics, including: * **General information:** This section provides an overview of the JCB 802.7 plus, 802.7 super, 803 plus, 803 super, 804 plus, and 804 super mini excavators, including their specifications, operating procedures, and safety guidelines. * **Routine maintenance:** This section covers all the essential maintenance procedures that should be performed regularly to keep your excavator in top condition. This includes tasks such as checking fluid levels, inspecting components, and replacing filters. * **Optional equipment:** This section provides information about the various optional equipment that can be installed on your excavator, such as hydraulic hammers, breakers, and grapple attachments. * **Body and framework:** This section covers the structure of the excavator, including the cab, chassis, and undercarriage. It provides instructions on how to repair or replace damaged components. * **Electrics:** This section covers the electrical system of the excavator, including the wiring diagrams, fuse boxes, and electrical components. It also provides troubleshooting tips for electrical problems. * **Controls:** This section covers the various controls on the excavator, such as the levers, switches, and pedals. It provides information on how to operate the controls safely and effectively. * **Hydraulics:** This section covers the hydraulic system of the excavator, including the hydraulic pumps, motors, and cylinders. It provides instructions on how to diagnose and repair hydraulic problems. * **Gearboxes:** This section covers the gearbox of the excavator, including the transmission, final drives, and axles. It provides instructions on how to repair or replace damaged gearbox components. * **Track and running gear:** This section covers the track system of the excavator, including the tracks, rollers, and sprockets. It provides instructions on how to inspect and maintain the track system. * **Engine:** This section covers the engine of the excavator, including the fuel system, ignition system, and cooling system. It provides instructions on how to diagnose and repair engine problems. With this comprehensive manual at your fingertips, you'll have all the information you need to keep your JCB mini excavator running smoothly for years to come.

The JCB 802.7 plus, 802.7 super, 803 plus, 803 super, 804 plus, and 804 super mini excavators are a range of compact and versatile construction machines designed for a variety of tasks, including digging, trenching, loading, and demolition. The "plus" and "super" designations indicate different model iterations, with the "super" models generally featuring upgraded engines, hydraulic systems, and other features for improved performance and efficiency. Despite their relatively small size, these excavators offer impressive digging power and maneuverability, making them ideal for working in tight spaces and confined areas. JCB's 800 series mini excavators are known for their robust construction and reliable operation. These machines feature a well-designed and user-friendly operator's cab, providing excellent visibility and comfort. The hydraulic systems are designed for smooth and precise operation, offering responsive control and accurate digging capabilities. The excavators are also equipped with a range of safety features, including an emergency stop button, a rollover protection system (ROPS), and a falling object protection system (FOPS), ensuring the safety of the operator and those working nearby.