This manual covers the Bruin 350 All-Terrain Vehicle (ATV), specifically the 4X4 models produced between 2004 and 2007. There is a long history of producing reliable and capable ATVs known for their performance and durability. The Bruin 350 was a popular mid-size utility ATV, recognized for its comfortable ride and versatility, succeeding earlier models and paving the way for future iterations. Its robust construction and engineering ensure dependable performance for a variety of off-road applications, from utility tasks to recreational trail riding. This comprehensive workshop service repair manual and owner's manual provides essential information for maintaining and repairing your Bruin 350. It covers detailed engine overhaul, transmission repair, fuel system maintenance, electrical system diagnostics, chassis and suspension servicing, brake system procedures, and bodywork. Included are regular maintenance schedules, troubleshooting guides, step-by-step repair instructions, and diagnostic procedures, all supported by clear illustrations and exploded views. This resource is designed for professional technicians, mechanics, workshops, and DIY enthusiasts seeking to ensure their ATV operates at peak performance and longevity.