This manual covers the RS 655 and Tuono 655 models equipped with the Rotax 655 EFI engine, produced between 1997 and 2001. These motorcycles are recognized for their performance-oriented design and the reliable engineering of the Rotax powerplant. The heritage in sportbike manufacturing is evident in the focus on delivering a powerful and responsive riding experience, with the Rotax 655 EFI engine being a key component in this pursuit.

This comprehensive Engine Repair and Service Manual provides detailed information essential for the maintenance and repair of the Rotax 655 EFI engine. It covers a wide range of systems and procedures, including engine mechanicals, lubrication, cooling, fuel delivery, ignition, exhaust, starting, and internal components. The manual includes step-by-step instructions for engine removal, disassembly, reassembly, installation, component inspection, and troubleshooting, offering in-depth diagnostic guidance and technical specifications to assist owners and technicians in keeping the engine in optimal condition.