This document provides comprehensive information for the JCB JS115, JS130, and JS130LC tracked excavators. These machines are engineered for demanding construction and earthmoving applications, featuring robust Isuzu engines, including the 5.2-liter 4HK1-X model delivering 70.4 kW (94.4 hp). With hydrostatic transmissions offering two speeds and impressive digging capabilities, these excavators are designed for reliability and efficient operation across a wide range of job sites. This workshop repair service manual is intended to assist owners, mechanics, and technicians in maintaining and repairing these JCB excavators. It covers essential areas such as detailed maintenance procedures, troubleshooting guides, technical specifications, and safety guidelines. By referencing the information within, users can ensure optimal performance and longevity of their JS115, JS130, and JS130LC models.