Honda CM400, CB400, CMX450 Rebel, CB450 Nighthawk, Hondamatic Repair Manual 1978-1987

• Honda CB400T Type I, 1978-1979
• Honda CB400T Type II, 1978-1979
• Honda CB400T, 1980-1981
• Honda CB400A, 1978
• Honda CB400T, 1979-1981
• Honda CM400T, 1979-1981
• Honda CM400A, 1979-1981
• Honda CM400C, 1981
• Honda CM400E, 1980-1981
• Honda CB400C, 1981
• Honda CB450T, 1982
• Honda CB450SC Nighthawk, 1982-1983, 1985-1986
• Honda CM450A, 1982-1983
• Honda CM450C Custom, 1982
• Honda CM450A Hondamatic, 1982-1983
• Honda CM450E, 1982-1983
• Honda CMX450C Rebel, 1986-1987

The electrical system includes the following systems:

1. Charging system



2. Ignition system.



3. Lighting system.



4. Turn signals.



5. Horn.

Tables 1-4 are located at the end of this chapter. Wiring diagrams are located at the end of this book.

The charging system consists of the battery, alternator and voltage regulator/rectifier. Refer to Figure 1 for Rebel 450 models or Figure 2 for all models except Rebel 450.

The alternator generates an alternating current (AC) which the rectifier converts to direct current (DC). The regulator maintains the voltage to the battery and load (lights, ignition, etc.) at a constant voltage regardless of variations in engine speed and load.

1. Turn the ignition switch to the OFF position.



2. Disconnect the battery negative lead (Figure 3).



3. Connect a voltmeter between the battery negative terminal and the negative cable.



4. The voltmeter should read 0 volts.



5. If there is a voltage reading, this indicates a voltage drain in the system that will drain the battery. Test all charging systems as described in this chapter.



6. Disconnect the voltmeter and reconnect the battery negative lead.

1. Clean crankshaft thoroughly with solvent. Clean oil holes with rifle cleaning brushes: dry, thoroughly with compressed air. Lightly oil all journal surfaces immediately to prevent rust.



2. Carefully inspect each main bearing journal (A, Figure 194) and connecting rod bearing journal (B, Figure 194) for scratches, ridges, scoring, nicks, etc.
   
   Very small nicks and scratches may be removed with crocus cloth. More serious damage must be removed by grinding, a job for a machine shop.



3. Inspect the cam chain and balancer chain sprocket teeth (C, Figure 194). If damaged, the crankshaft must be replaced.

• General Information
• Troubleshooting
• Lubrication, Maintenance and Tune-up
• Engine
• Clutch and Manual Transmission
• Torque Converter and Automatic Transmission
• Fuel and Exhaust Systems
• Electrical System
• Front Suspension and Steering
• Rear Suspension
• Brakes
• Frame and Repainting
• Wiring Diagrams (black and white with color key)