The 2005 T660 Turbo ST is a 4-stroke, turbocharged snowmobile engineered for performance and comfort. Featuring a 1056cc liquid-cooled engine, this model offers robust power delivery, estimated between 120-130 HP, and is equipped with Electronic Fuel Injection (EFI) for optimal efficiency. Its design prioritizes reliability and capability, making it a strong contender in the luxury touring segment of its production era. The T660 Turbo ST is built upon a heritage in snowmobile manufacturing, known for its advanced engineering and durable construction. This comprehensive factory service manual provides full coverage for the 2005 T660 Turbo ST, detailing maintenance, repair, and troubleshooting procedures. It includes in-depth information on all major systems, such as the engine, fuel system with its turbocharger, drivetrain, suspension, brakes, and electrical system. The manual offers step-by-step repair instructions, disassembly and assembly guides, torque specifications, and diagnostic procedures, making it an essential resource for do-it-yourself enthusiasts and professional mechanics alike. Its high-resolution, printable format, complete with diagrams and exploded views, ensures clarity and ease of use for maintaining and repairing the snowmobile.