The GTR1400, also known as the Concours 14 in North America (model code ZG1400), represents a pinnacle of sport-touring motorcycle engineering. Produced between 2008 and 2014, this machine is celebrated for its powerful 1352cc inline-four engine, delivering approximately 155 PS, and its refined shaft drive system, ensuring smooth and reliable power delivery. Key features include comfortable ergonomics for long-distance riding, integrated luggage, and advanced electronic aids like K-ACT ABS and KTRC traction control on select models, distinguishing it as a premium grand touring motorcycle designed for enthusiasts seeking performance and comfort on extended journeys. This comprehensive workshop service manual provides detailed guidance for the maintenance, repair, and troubleshooting of GTR1400 (ZG1400) models from 2008 through 2014. It covers all essential systems, including engine mechanicals, fuel injection, drivetrain, chassis, brakes, and electrical systems, offering in-depth repair procedures, diagnostic charts, and specifications. The manual is designed to assist owners, technicians, and mechanics in performing routine maintenance, complex repairs, and system diagnostics, ensuring the continued optimal performance and longevity of the vehicle.