This workshop service repair manual provides comprehensive information for the Suzuki GS250 and GS250FWS models produced between 1985 and 1990. As part of the well-regarded GS series, these motorcycles typically offered a balance of performance and reliability, serving as capable entry-level to mid-range offerings. This manual is designed to assist owners and technicians with all aspects of vehicle maintenance and repair, ensuring the continued optimal performance and longevity of these classic machines. The scope of this manual covers a wide array of essential topics, including detailed engine specifications, routine maintenance procedures, drivetrain service, chassis and suspension adjustments, and electrical system diagnostics. It offers step-by-step repair instructions, troubleshooting guides, and technical specifications, all presented with clear diagrams, illustrations, and wiring schematics. By utilizing the precise information contained within, users can effectively perform everything from basic servicing to complex component overhauls and electrical fault finding, maintaining their Suzuki GS250 or GS250FWS to manufacturer standards.