This service and repair manual covers the Honda CB250N and CB400N Super Dreams motorcycles produced between 1978 and 1984. These models are known for their reliable air-cooled, parallel-twin engines, comfortable riding positions, and user-friendly design, making them popular choices for commuting and general riding. Their engineering quality and dependability are hallmarks of Honda's legacy, offering a balance of performance and economy within the mid-size motorcycle segment. This manual provides comprehensive information for maintaining these classic machines.

The purpose of this manual is to equip owners, mechanics, and enthusiasts with the detailed knowledge required for the effective maintenance, diagnosis, and repair of the Honda CB250N and CB400N. It covers all major systems, including engine mechanicals, fuel and ignition systems, transmission, electrical components, suspension, brakes, and chassis. Detailed procedures for routine maintenance, troubleshooting common issues, and complete component overhauls are provided, ensuring that these motorcycles can be kept in optimal running condition.