The 2006 Arctic Cat T660 Turbo Touring snowmobile represents a performance touring model designed for comfort and capability on extended trail rides. This snowmobile features a 4-stroke, turbocharged, liquid-cooled, inline 3-cylinder engine with electronic fuel injection and a displacement of 660 cc, delivering approximately 100-120 horsepower. Its design philosophy emphasizes accommodating both rider and passenger, with a 2-up seating configuration, passenger backrest, footrests, and a tall windshield for wind protection. Arctic Cat, an established American manufacturer known for performance and innovation, produced these models with a focus on providing a refined and powerful touring experience. This comprehensive service manual covers all 2006 Arctic Cat T660 Turbo Touring models. It is designed to assist owners, mechanics, and technicians in maintaining and repairing the snowmobile. The manual provides detailed information on all major systems, including the turbocharged engine, fuel system, cooling, ignition, drivetrain, suspension, steering, brakes, and electrical system. It outlines routine maintenance procedures, engine overhauls, clutch service, and component replacement, along with systematic troubleshooting guides for diagnosing and resolving issues. Technical specifications and fluid requirements are also included, ensuring proper upkeep and performance.