FOREWORD This KYMCO Service Manual contains service, maintenance, and troubleshooting information for the 2008 KYMCO MXU400 ATV. The complete manual is designed to aid service personnel in service-oriented applications. This manual is divided into sections. Each section covers a specific ATV component or system and, in addition to the standard service procedures, includes disassembling, inspecting, and assembling instructions. When using this manual as a guide, the technician should use discretion as to how much disassembly is needed to correct any given condition. The service technician should become familiar with the operation and construction of each component or system KYMCO. This manual will assist the service technician in becoming more aware of and efficient with servicing procedures. Such efficiency not only helps build consumer confidence but also saves time and labor. All KYMCO ATV publications and decals display the words Warning, Caution, Note, and At This Point to emphasize important information. The symbol identifies personal safety-related information. Be sure to follow the directive because it deals with the possibility of severe personal injury or even death. The symbol identifies unsafe practices which may result in ATV-related damage. Follow the directive because it deals with the possibility of damaging part or parts of the ATV. The symbol NOTE: identifies supplementary information worthy of particular attention. The symbol AT THIS POINT directs the tech- nician to certain and specific procedures to promote efficiency and to improve clarity. At the time of publication, all information, photographs, and illustrations were technically correct. Some photographs used in this manual are used for clarity purposes only and are not designed to depict actual conditions. Because KYMCO Inc. constantly refines and improves its products, no retroactive obligation is incurred. All materials and specifications are subject to change without notice. Keep this manual accessible in the shop area for reference. Overseas Service Department KYMCO Inc. 2008 KYMCO Inc. March 2008 TM Trademarks of KYMCO Inc., Taiwan