This manual covers the Suzuki GSX-R 400, model code GK71B, from its first generation in 1985. This motorcycle is powered by a liquid-cooled, 398 cc V4 engine featuring DOHC and four valves per cylinder, producing approximately 56 horsepower. Its engineering emphasizes performance and reliability, with a lightweight aluminum twin-spar frame, a 6-speed transmission, and advanced suspension systems for its era, including telescopic front forks and a monoshock rear. Notable specifications include its compact dimensions, a dry weight of 175 kg, and a sophisticated braking system with dual front discs and a single rear disc.

The purpose of this Service Repair Workshop Manual is to provide comprehensive guidance for the maintenance and repair of your Suzuki GSX-R 400. It details essential procedures, technical specifications, and troubleshooting steps necessary to keep the motorcycle in optimal condition. Coverage includes engine oil specifications and capacity, recommended service intervals of 3,000 miles or 6 months, and information on various systems such as the transmission, chassis, and electrical components. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the longevity and performance of the vehicle.