Welcome to the comprehensive service and repair manual for the 1986 Suzuki GSXR400. This iconic sportbike, a key player in Suzuki's early performance motorcycle lineage, offered a compelling blend of lightweight construction and sporty ergonomics, competing effectively within the 400cc class of its era. The GSXR400 is recognized for embodying the GSX-R DNA, delivering an engaging riding experience that appealed to enthusiasts seeking agile handling and spirited performance. Its inline-four engine, coupled with a robust chassis, established it as a significant model in Suzuki's sportbike development. This manual is meticulously designed to serve as an indispensable resource for maintaining and repairing your 1986 Suzuki GSXR400. It provides in-depth coverage of all essential systems, including detailed procedures for engine service, fuel and ignition systems, transmission, drivetrain, suspension, brakes, and the electrical system. You will find comprehensive guidance on routine maintenance, troubleshooting common issues, and performing complex repairs, all presented with the clarity and detail necessary for professional technicians and dedicated DIY enthusiasts alike. The manual also includes critical technical specifications, ensuring accurate diagnostics and component replacements.