This manual covers the 2015 Softail models, including the FLSTC Heritage Softail Classic, FLSTN Softail Deluxe, FLS Softail Slim, FLSTF Fat Boy, FXST Softail Standard (Australia Only), FLSTFB Fat Boy Lo/Special, and FXSB Breakout. The Softail platform is renowned for its distinctive styling, blending classic V-twin performance with a comfortable ride, making it a popular choice for cruising and touring. These motorcycles are engineered with a focus on heritage, reliability, and the iconic riding experience, offering a robust and enduring machine for enthusiasts. This comprehensive service repair manual provides detailed instructions for all aspects of maintenance, diagnostics, and repair for your 2015 Softail. It includes extensive coverage of the engine, fuel system, powertrain, chassis, suspension, and electrical systems, along with routine maintenance procedures and major repair guidance. With hundreds of illustrations and diagrams, this manual is an essential resource for both DIY owners and professional technicians aiming to keep their Softail in optimal condition, ensuring longevity and peak performance.