The Kymco Mongoose-KXR90-50 ATV, produced in 2003, represents a robust and reliable machine designed for recreational riding and general trail use. This particular model is engineered with a 50cc internal combustion engine, featuring a chain drive system for efficient power transfer. Its construction emphasizes durability and performance, making it a suitable choice for riders seeking an engaging off-road experience. This comprehensive Service Repair Manual provides detailed guidance for the maintenance and repair of your Kymco Mongoose-KXR90-50 ATV. It covers a wide range of topics, from routine scheduled maintenance to complex overhauls and component installations. Within these pages, you will find essential information on system operation, diagnostic procedures, troubleshooting techniques, and step-by-step instructions for removal and installation of major parts, all supported by clear illustrations, photographs, and diagrams to assist owners and technicians alike.