This manual covers the JCB 537-135 Telescopic Handler, a robust piece of industrial equipment designed for demanding applications. Engineered for reliability and performance, this model offers significant lifting capabilities, including a maximum lift height of 13.5 meters and a maximum lift capacity of 3700 kg. Its versatile design, featuring multiple steering modes and a powerful diesel engine, makes it an indispensable tool for construction, agriculture, and material handling operations. The inherent quality of JCB engineering ensures this machine is built to withstand rigorous use and deliver consistent results. The purpose of this Workshop Service Manual (WSM) is to provide comprehensive guidance for the maintenance, repair, and technical understanding of the JCB 537-135 Telescopic Handler. It details all areas of repair with step-by-step instructions, supported by clear pictures and wiring diagrams. This manual is an essential resource for owners, mechanics, and technicians, covering routine maintenance procedures, troubleshooting common issues, and outlining critical technical specifications. Access to this information empowers users to effectively maintain their equipment, ensuring optimal performance and longevity.