This factory service repair manual covers the 1987 T4, including the T4-350 and T4-500 sub-models. An Italian manufacturer established in 1978, is known for its stylish and practical motorcycles. The T4 series represented the brand's entry into the dual-sport segment during the late 1980s, offering versatility for various riding conditions. These air-cooled, single-cylinder motorcycles typically feature a carburetor fuel system and a wet multi-plate clutch, with manual transmissions. This manual provides comprehensive, factory-level repair and maintenance information essential for ensuring the longevity and performance of your T4. This comprehensive English-language manual is designed to assist owners, DIY mechanics, and professional technicians in the repair and maintenance of the T4-350 and T4-500 motorcycles. It delves into critical areas such as engine disassembly, overhauling, and re-assembly, along with detailed procedures for the lubrication circuit, transmission, suspension, wheels, brakes, and electrical systems. The manual includes scheduled maintenance, adjustments, component replacement, system repairs, troubleshooting guides, and diagnostic procedures, complete with torque wrench settings and wiring diagrams. This digital resource is an invaluable tool for maintaining the mechanical integrity and operational readiness of your vintage motorcycle.