The Mongoose KXR50 and KXR90 are recreational all-terrain vehicles designed for youth and beginner riders, offering a robust and reliable platform for trail exploration. These ATVs, produced from 2003 onwards, feature a durable steel frame and are powered by efficient two-stroke, single-cylinder engines, with displacements of 49.4cc for the KXR50 and 89.6cc for the KXR90. Engineered for ease of use and safety, they typically include essential features such as automatic Continuously Variable Transmission (CVT), hydraulic disc brakes, and enclosed footwells. A reputable manufacturer established in 1964, has positioned the Mongoose KXR series as a value-oriented option within the youth ATV market, emphasizing dependable performance for general trail riding.

This workshop service repair manual provides comprehensive, A-Z coverage for the Mongoose KXR50 and KXR90 models from 2003 to the present. It serves as an indispensable resource for owners and independent repair shops, detailing all mechanical and electrical repairs. The manual includes step-by-step instructions for disassembly, assembly, routine maintenance, and troubleshooting across all vehicle systems, from the engine, fuel, and ignition systems to the transmission, braking, and electrical components. With a wealth of detailed pictures and diagrams, this manual aims to be the definitive guide for maintaining and repairing these ATVs, ensuring optimal performance and longevity.