This comprehensive repair manual provides in-depth information on all aspects of maintaining and repairing 1970-1978 Harley Davidson XL, XLH, XLCH, and XLT Sportster motorcycles. It covers a wide range of topics, including general information, routine maintenance procedures, engine removal and installation, fuel systems, lubrication and cooling systems, engine specifications, transmission, drive chain and sprockets, steering system, shocks, bodywork, intake and exhaust systems, electrical systems, and advanced troubleshooting. It also includes detailed instructions for performing a variety of repairs, from simple adjustments to complex overhauls. Whether you are a seasoned mechanic or a novice DIY enthusiast, this manual is an invaluable resource for keeping your Sportster running smoothly. With its wealth of information and clear explanations, you will have the knowledge and confidence to handle any repair job.

The 1970-1978 Harley Davidson XL, XLH, XLCH, and XLT Sportster motorcycles represent a pivotal era in the history of the iconic American brand. These models, often referred to as the "Ironhead" Sportsters, marked a significant shift in design and performance compared to their predecessors. The XL series, introduced in 1957, was revamped with a new, more powerful 900cc engine, boasting a larger displacement than the previous 883cc unit. The XLH featured a more robust frame and a redesigned swingarm, enhancing both stability and handling. The XLCH model, aimed at racing enthusiasts, showcased a distinctive hardtail frame and a modified engine, with an increased compression ratio for heightened performance. The XLT, introduced in 1971, offered a sportier aesthetic with chrome-plated handlebars, exhaust pipes, and other components. These models, renowned for their reliability and ruggedness, became popular among both casual riders and enthusiasts, solidifying the Sportster's reputation as a versatile and desirable motorcycle. The 1970-1978 Sportsters were equipped with a range of features that distinguished them from their predecessors. These included a new 4-speed transmission, an electric starter, and a redesigned headlamp nacelle. The engine, known as the "Ironhead" due to its cast-iron cylinder heads, delivered a powerful and responsive ride. The "Ironhead" engine, although renowned for its durability, suffered from some design flaws, particularly regarding oil leaks and uneven wear patterns. These issues, while common, were addressed through ongoing advancements and improvements in later model years. Despite these minor shortcomings, the 1970-1978 Sportster models remain cherished by enthusiasts for their timeless design, reliable performance, and a signature "Harley" rumble. They continue to be popular for customization and restoration, proving their enduring appeal and influence in the motorcycling world.