This workshop repair service manual covers the YFM550 and YFM700 models produced between 2009 and 2010. These versatile off-road vehicles are engineered with robust liquid-cooled, 4-stroke engines featuring SOHC and 4-valve technology, with displacements of 531cc for the YFM550 and 686cc for the YFM700. Both models utilize fuel injection and TCI ignition systems, ensuring efficient power delivery and reliable performance for various terrains. The transmission comprises a constant mesh, 5-speed gearbox with a wet, multiple-disc clutch, and a selectable 2WD/4WD shaft drive system, offering adaptability and control in demanding conditions. This comprehensive manual provides essential information for the maintenance, repair, and troubleshooting of your YFM550 or YFM700. It details critical procedures, including engine oil capacity and grade, service intervals for oil changes, filter replacements, and valve adjustments. Technical specifications for the engine, transmission, suspension, and braking systems are thoroughly outlined, alongside safety guidelines. Owners, mechanics, and technicians will find this resource invaluable for ensuring the longevity, optimal performance, and safe operation of their vehicles.