This manual covers the Takeuchi TB125, TB135, and TB145 compact excavators, part of the renowned Takeuchi Compact Excavator Series. These diesel-powered machines are engineered for reliability and performance, featuring liquid-cooled engines with varying displacements and horsepower to suit diverse operational needs. Their robust construction and hydrostatic transmissions with 2-speed travel capabilities make them versatile tools for a wide range of construction and excavation tasks. The series offers impressive digging depths and reach, combined with substantial operating weights, ensuring stability and efficiency on job sites. This Factory Service Repair Manual provides comprehensive guidance for maintaining and repairing your Takeuchi compact excavator. It details essential procedures, including lubrication specifications for engine oil and hydraulic fluid, along with recommended service intervals for oil changes and filter replacements. Technical specifications, performance data, and troubleshooting information are included to assist owners, mechanics, and technicians in ensuring optimal operation and longevity of the TB125, TB135, and TB145 models. This English-language manual is available in digital and print formats.