This manual covers the JCB JS200, JS210, JS220, JS235, JS240, and JS260 excavators, part of the Auto Tier3 generation. These robust machines are engineered for demanding construction and earthmoving applications, featuring powerful diesel engines with displacements typically ranging from 6.7 to 7.2 liters and producing approximately 110 kW in the JS200 model. Their hydrostatic transmissions and variable gear control ensure efficient operation, while their substantial operating weights, reaching up to 25,000 kg, provide stability for tasks such as digging to depths of 6.0-7.0 meters with bucket capacities up to 1.2 cubic meters. This comprehensive Service Manual and Workshop Repair Manual provides essential information for maintaining and repairing your JCB excavator. It details critical maintenance procedures, including engine oil change intervals and fluid capacities for engine oil, hydraulic oil, and coolant. Technical specifications, troubleshooting guides, and safety guidelines are also included, offering in-depth knowledge for owners, mechanics, and technicians. This English-language resource is designed to ensure the longevity and optimal performance of your JS series excavator.