This workshop service manual covers the Takeuchi TB125, TB135, and TB145 compact excavators. These diesel-powered machines are engineered for robust performance and reliability in various construction and landscaping applications. Featuring hydrostatic transmissions, liquid-cooled engines with displacements typically ranging from 2.0L to 2.7L and producing approximately 25 to 40 horsepower, and rubber track undercarriages, these excavators offer versatile operation. Their design emphasizes operational efficiency and durability, with safety features including ROPS and FOPS. This comprehensive English-language manual provides essential information for maintaining and repairing your Takeuchi excavator. It details routine maintenance procedures, including fluid capacities for engine oil, hydraulic oil, and coolant, alongside technical specifications for engine type, displacement, power, and hydraulic system parameters. Diagnostic and troubleshooting guidance is also included, along with information on the undercarriage, digging capabilities, and overall machine dimensions. This resource is designed to assist owners, technicians, and mechanics in ensuring the optimal performance and longevity of their TB125, TB135, or TB145 equipment.