This workshop service and repair manual covers Harley-Davidson FL and FX series motorcycles from 1978 to 1984, featuring 1200cc to 1340cc Shovelhead OHV V-Twin engines and 4-speed transmissions. These iconic American machines are celebrated for their distinctive character, robust engineering, and the legendary V-twin sound, representing a significant era in the brand's rich heritage. The FL models, such as the Electra Glide, typically embody the touring aspect, while the FX models, like the Super Glide, offer a cruiser or custom platform, both sharing core mechanical components. This manual provides comprehensive technical data for these classic motorcycles, essential for their continued operation and preservation.

The purpose of this manual is to serve as an authoritative guide for the maintenance, diagnosis, and repair of your Harley-Davidson FL/FX motorcycle. It encompasses detailed procedures for all major systems, including the engine, 4-speed transmission, fuel system, electrical components, brakes, suspension, and frame. You will find information on routine maintenance, systematic troubleshooting of common issues, and complete rebuilding procedures for various components. Technical specifications, wiring diagrams, and fluid recommendations are also included, ensuring that owners, mechanics, and technicians have the necessary information to keep these classic V-twins running optimally and reliably.