This manual pertains to Wisconsin Engine models TRA-10D and TRA TR-100. These engines are characterized by their air-cooled, single-cylinder design, likely powered by gasoline, and typically feature magneto ignition, forced air cooling, a carburetor, and a mechanical governor. Wisconsin engines are known for their robust construction and reliability, making them suitable for demanding applications. The TRA-10D and TRA TR-100 models are commonly utilized in industrial equipment, agricultural machinery, generators, and pumps, reflecting their dependable performance in various operational environments. This document serves as a comprehensive Parts Manual and Illustrated Parts List (IPL) in English. Its purpose is to provide detailed information for identifying and ordering replacement parts for the Wisconsin Engine TRA-10D and TRA TR-100. While specific technical specifications such as displacement, power output, and dimensions are dependent on the exact engine variant, this manual is an essential resource for ensuring the correct parts are sourced. Owners, mechanics, and technicians can use this manual to accurately identify components, facilitating efficient maintenance and repair to keep these engines operating at their best.