This manual covers the Mule 4000 and 4010 4x4 UTVs, model code KAF620, manufactured between 2009 and 2011. These versatile utility terrain vehicles are equipped with a 617 cc, liquid-cooled gasoline engine featuring a V-twin configuration and Mikuni carburetors, paired with a Continuously Variable Transmission offering 2WD/4WD selectable drive modes and H, L, N, R gear selection. Known for their robust construction and reliable performance, these models are designed for demanding work and challenging terrains, providing a dependable solution for various utility needs. This comprehensive workshop service repair manual in English provides essential information for maintaining and repairing your UTV. It details all models, engines, trim, and transmission types, covering critical areas such as routine maintenance procedures, troubleshooting common issues, detailed technical specifications, and vital safety guidelines. By following the procedures outlined within this manual, owners and technicians can ensure optimal performance, longevity, and safe operation of their Mule 4000 / 4010 4x4 vehicles.