1982-1985 Honda CB450 / CM450 Shop Manual (P/N 61MC003, revised June 1982)

• Covers 1982–1985 Honda CB450 and CM450 series motorcycles (including CB450T, CM450C, CM450A, and CM450E)
• Official Honda publication 61MC003, originally revised June 1982
• 97 pages detailing technical specifications, torque values, exploded-view diagrams, and routing schematics
• Serves as the primary factory reference for engine, fuel system, and chassis maintenance

Document Overview and Technical Data

This shop manual provides the exact technical documentation required to service the 1982–1985 Honda CB450 and CM450 lineups. It systematically breaks down the motorcycle's core systems. You will find dedicated chapters covering engine assembly, fuel delivery, lubrication, and transmission rebuilds. Electrical diagnostics are heavily featured as well, giving you complete wiring diagrams alongside battery and charging system parameters. Always review factory safety protocols regarding fuel system depressurization and proper lifting techniques before tearing into the bike to avoid injury or property damage. Rather than generalized advice, this overview strictly outlines the specific contents and technical depth of the original OEM publication.

Specification Highlights

Finding reliable data for the vintage 447 cc vertical twin can be tough. This manual maps out the exact factory reference values across comprehensive specification tables. Cylinder compression is strictly specified at 1,270 ± 98 kPa. According to the cylinder head charts, intake valve clearance must be set to 0.10 mm. Engine oil capacity for the CM450C, E, and CB450T requires exactly 3.0 liters. When buttoning up the clutch, torque values are set at a precise 45–50 Nm. These hard numbers provide the essential baseline for maintaining these classic builds. Note that this text functions purely as a contents review of the factory manual, highlighting the technical specs it provides rather than acting as a standalone repair guide.