Honda CB250N & CB400N Super Dreams Owners Workshop Manual 1978-1984

Technical Scope for the 1978–1984 Honda CB250N and CB400N

• Covers 1978–1984 Honda CB250N and CB400N Super Dream models, including variants such as the NA, NB, and NC configurations
• Official Haynes publication, 1990 edition, ISBN 0 85696 893 5
• Contains hundreds of detailed monochrome exploded-view diagrams and original factory photography documenting engine and chassis assembly
• 130 pages documenting maintenance, troubleshooting, and major system overhaul specifications
• Delivered as a direct download the moment payment clears
• Indexed PDF search covers every chapter and appendix
• This 1990 edition provides definitive specifications for the 1978–1984 Honda CB250N and CB400N production run, replacing earlier, less detailed service documentation.

Mechanical and Systems Documentation

The 1978–1984 Honda CB250N and CB400N workshop manual details the structural and operational characteristics of the parallel twin-cylinder series. Coverage spans the engine and gearbox units, with extensive details on crankshaft assembly, balance weight timing, and multi-plate wet clutch components. Systems including the fuel, ignition, frame, and hydraulic brake assemblies are analyzed through descriptive summaries and technical data tables. The documentation provides a clear structure of factory workshop information essential for owners undertaking thorough mechanical review.

Engine and Chassis Specifications

Technical data is presented across dedicated chapters focusing on tolerance charts, torque settings, and adjustment intervals. Cylinder head bolt torque for these machines is documented at 22–24 lbf ft in the engine assembly data. The intake valve clearance for the 1978–1984 Honda CB400N is specified at 0.10 mm. Crankcase bearing clearances for these units are recorded at 0.020 mm for precise fitment. The manual includes specific tyre pressure recommendations for high-speed operation and lists proper lubricant grades for the transmission, front forks, and wheel bearings.

This 130-page factory-authorized publication covers the 1978–1984 Honda CB250N and CB400N, providing engine, chassis, and electrical specifications for the entire Super Dream model range.