This comprehensive workshop repair service manual provides detailed technical information for the Aprilia RS250 RS 250 945W, specifically for the 1998 model year. It covers all models, engines, and trim levels, offering an in-depth guide to servicing, maintenance, and troubleshooting procedures. The manual is designed for both professional mechanics and knowledgeable DIY enthusiasts, providing the detailed instructions and diagrams needed to confidently tackle a wide range of repair and maintenance tasks. The content includes detailed specifications, exploded diagrams, wiring schematics, lubrication charts, and step-by-step procedures for all aspects of the motorcycle, from routine maintenance like oil changes and tire rotations to complex engine rebuilds and electrical system repairs.

The Aprilia RS250 is a high-performance, two-stroke motorcycle that was produced by the Italian manufacturer Aprilia from 1996 to 2004. Designed as a pure racing machine, it was built to compete in the 250cc Grand Prix motorcycle racing championship. The RS250 quickly gained a reputation for its exceptional handling, blistering acceleration, and screaming engine. This was due to its lightweight construction, featuring a tubular steel frame and single-sided swingarm, mated with a powerful 249cc, liquid-cooled, single-cylinder, two-stroke engine. This engine, capable of producing over 60 horsepower, was renowned for its aggressive power delivery and intoxicating engine note. The RS250 further boasted premium components like upside-down forks, a mono-shock rear suspension, and powerful radial-mount brakes. This combination of performance and handling made the RS250 a formidable competitor on the track and a sought-after machine for enthusiasts. The 1998 Aprilia RS250, specifically designated with the 945W designation, exemplifies the evolution of this motorcycle model. It features a refined engine with revised porting and a new exhaust system, contributing to a further increase in power and torque. Additionally, subtle aerodynamic improvements and a redesigned front fairing further enhanced the bike's performance. This model, like its predecessors, was equipped with a 6-speed transmission, allowing riders to exploit the engine's power band effectively. The 1998 RS250 also received updated electronics, further enhancing its performance and reliability. Despite its intended racing purpose, the RS250 found a dedicated following among road-going enthusiasts. Its raw performance, exceptional handling, and iconic design have cemented its status as a legend in the world of sport motorcycles. The 1998 Aprilia RS250 945W truly represents the pinnacle of two-stroke racing technology and remains a coveted machine for collectors and passionate riders alike.