This workshop service repair manual provides comprehensive information for the 2011 TE 125, including the SMS4 variant. A brand with a rich heritage dating back to 1903, is known for its robust off-road motorcycles. The TE 125 is a lightweight, liquid-cooled, four-stroke, single-cylinder motorcycle designed for versatile off-road use, with the SMS4 variant offering dual-sport capabilities. This manual is an essential resource for owners and technicians aiming to maintain and repair this model to factory standards, covering its engine, transmission, chassis, suspension, brakes, and electrical systems. This manual serves as a detailed guide for all aspects of the TE 125/SMS4. It includes step-by-step procedures for routine maintenance, engine rebuilds, suspension service, brake system upkeep, and electrical component testing. Furthermore, it provides critical technical specifications, component tolerances, troubleshooting guides, and clear electrical and mechanical schematics. The comprehensive nature of this document ensures that users can effectively diagnose issues, perform repairs, and understand the intricate workings of their motorcycle, ensuring optimal performance and longevity.