The Yamaha YFM550 Grizzly and YFM700 Grizzly ATVs, representing the second generation of this acclaimed line from 2007-2015, are engineered for exceptional off-road performance and reliability. These utility ATVs, produced for the 2009 and 2010 model years, feature robust 535cc and 686cc liquid-cooled, four-stroke engines respectively, delivering strong power and torque suitable for demanding terrain. Key highlights include independent front and rear suspension, shaft drive with selectable 4WD, electronic fuel injection (EFI) for precise power delivery, and the renowned Ultramatic automatic transmission with integrated engine braking. Their durable chassis, significant cargo rack capacity, and substantial towing capability make them ideal for work, recreation, and exploration in challenging environments. This comprehensive factory service repair manual provides detailed instructions for the maintenance, diagnosis, and repair of your YFM550 and YFM700 Grizzly ATVs. It covers all essential systems, including engine mechanicals, fuel injection, electrical systems, drivetrain, transmission, suspension, steering, braking, and chassis. Within its pages, you will find routine maintenance procedures, in-depth troubleshooting guides for common and complex issues, engine rebuild procedures, electrical diagnostics, and specific repair instructions for all major components. The manual is designed to assist owners, technicians, and mechanics in ensuring the optimal performance, longevity, and safety of their Grizzly ATV through accurate and detailed technical information and procedures.