The R15, specifically the v1.0 models produced between 2008 and 2011, represents a commitment to bringing renowned supersport DNA to the entry-level motorcycle segment. This model is characterized by its R-series inspired styling, featuring an aggressive fairing design and a projector headlamp, coupled with a Deltabox frame for enhanced rigidity and superior handling. Powered by a 149.8 cc liquid-cooled, 4-stroke, SOHC, 4-valve engine with fuel injection and a 6-speed transmission, the R15 offers a sporty yet efficient riding experience, making it a popular choice for young riders seeking performance and dynamic aesthetics. Its engineering quality is underscored by a robust chassis and advanced suspension systems, including upside-down front forks on some variants and a monoshock rear, contributing to its agile performance and rider satisfaction. This comprehensive workshop service repair manual provides in-depth guidance for the maintenance, troubleshooting, and repair of the R15 (v1.0). Covering all major systems, including the engine mechanicals, fuel injection, ignition, cooling, transmission, electrical systems, chassis, suspension, and braking systems, this manual is designed for both owners and professional technicians. It details scheduled maintenance, component replacement procedures, adjustments, and extensive troubleshooting guides with diagnostic flowcharts. Essential technical specifications, torque values, and clearances are also included, ensuring accurate and effective service. The manual is presented in English and is structured to facilitate easy navigation and understanding, enabling users to maintain their R15 to factory standards and address any issues that may arise.