The Brute Force 650 / KVF 650 4x4, produced between 2005 and 2013, represents a significant offering in the all-terrain vehicle market. Known for its robust 633 cc V-twin engine, capable of delivering approximately 46-48 HP and 36-38 lb-ft of torque, this model is engineered for both work and recreation. Its reliable 4x4 system, coupled with a Continuously Variable Transmission (CVT) featuring high/low range and reverse, ensures versatile performance across varied terrains. The vehicle's design prioritizes durability and practical utility, with features like hydraulic disc brakes on all wheels and a substantial towing capacity of up to 1250 lbs, making it a dependable choice for demanding tasks. This comprehensive technical service and repair manual provides in-depth guidance for maintaining and repairing the Brute Force 650 / KVF 650 4x4 models. It covers essential areas including engine top end, lubrication systems, Digital Fuel Injection (DFI), crankshaft and transmission, drivetrain components, chassis systems such as brakes, suspension, and steering, as well as the electrical system. The manual details periodic maintenance, fluid changes, filter replacements, and complete repair procedures, including disassembly, inspection, and reassembly. Additionally, it offers troubleshooting guides for common issues and diagnostic procedures for the DFI system, making it an invaluable resource for both do-it-yourself enthusiasts and professional mechanics.