The 2005 Arctic Cat 650 V-Twin 4x4 FIS, presented in CAT GREEN, is a high-performance utility all-terrain vehicle engineered for demanding off-road applications. Featuring a robust liquid-cooled, 650 cc V-twin engine and a sophisticated Fully Independent Suspension (FIS) system, this model was designed to offer superior power, torque, and terrain handling capabilities, positioning it as a strong contender against competitors such as Polaris Sportsman, Can-Am Outlander, and Yamaha Kodiak/Grizzly. Its 4x4 drive system, complemented by a front differential lock, further enhances its ability to navigate challenging landscapes, making it a reliable choice for work and recreation. This factory full parts manual provides comprehensive English-language coverage for the 2005 Arctic Cat 650 V-Twin 4x4 FIS (model code A2005IBR4BUSZ). It serves as an essential resource for owners, technicians, and parts suppliers, detailing every component of the vehicle. The manual includes exploded views and part numbers for the engine, drivetrain, suspension, brakes, electrical systems, bodywork, chassis, and fuel/cooling systems. Additionally, it offers guidance on disassembly, assembly, and overhaul procedures, ensuring accurate part identification and facilitating efficient maintenance and repair to keep this powerful ATV in optimal condition.