This manual covers the KLX140, a versatile four-stroke motorcycle produced for the 2008 through 2011 model years. It is designed for a wide range of riders and applications, offering robust performance and reliability. The manual encompasses both the standard KLX140 and the Big Wheel variant, KLX140L, ensuring comprehensive support for these models. This comprehensive service manual provides detailed instructions for the maintenance, repair, and troubleshooting of your KLX140. It includes complete tear-down and rebuild procedures, illustrated with images and part diagrams, along with essential specifications such as torque values. Whether you are performing routine maintenance or addressing complex issues, this guide offers the technical information necessary to keep your motorcycle in optimal condition.