The Cagiva T4, produced in the late 1980s to early 1990s, is a dual-sport adventure motorcycle offered in 350cc and 500cc variants, such as the T4-350 R-E and T4-500 E. Known for Italian styling and performance, these motorcycles were designed for off-road and adventure touring. They typically feature a 4-stroke, single-cylinder engine, a 5-speed manual transmission with a wet multi-plate clutch, and disc brakes on both the front and rear. The T4 is equipped with basic analog instrumentation and was intended for European and international markets, often competing in the rally scene. This comprehensive workshop service repair manual provides detailed information for the Cagiva T4 models. It covers essential areas including engine disassembly, overhauling, and lubrication, as well as chassis and running gear maintenance, suspension, wheels, and braking systems. The manual also details the electrical system, scheduled maintenance, adjustments, troubleshooting common issues and remedies, specific tooling, and torque wrench settings. Designed for DIY enthusiasts and independent mechanics, this English-language manual offers high-quality diagrams and step-by-step instructions to assist in maintaining and repairing the vehicle.