If you love working on your bike but you'd like a little more guidance, pick up a copy of this 1978-1987 repair manual by Clymer. It covers the Honda CM400, CB400, CMX450 Rebel, CB450 Nighthawk and Hondamatic models, including:

• 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

So why is this owner's manual a must-have for owners of Honda CB400/CB450 Twins? For starters, there's so much more you can get from your bike performance-wise when you take good care of it on a regular basis. And since professional service costs a significant amount of money, you're more likely to keep up with the maintenance schedule when you can perform tune-ups yourself. In addition, you'll be able to tackle bigger DIY projects on your own, like repairs to the engine, transmission, suspension and brakes. You can even learn about frame work and repainting. Don't hesitate to get your hands on this guide so you can get to know your favorite Honda bike even better.

THE CB400 / CB450 ENGINE Honda CB400/CB450 Twins come equipped with air-cooled, 4-stroke, 2-cylinder single overhead camshaft engines, with 3 valves per cylinder. Engine size was increased in 1982 from 395cc to 477cc.

The wet multi-plate clutch and transmission are mounted within the engine. Transmission come in manual 5- and 6-speed units and automatic with torque converter.

Book Excerpt: 1978-1987 Honda CM400, CB400, CMX450 Rebel, CB450 Nighthawk, Hondamatic Repair Manual ELECTRICAL SYSTEM

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.

CHARGING SYSTEM

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.

LEAK TEST

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.

CRANKSHAFT INSPECTION

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.

Subject: 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987 Honda CM400, CB400, CMX450 Rebel, CB450 Nighthawk, Hondamatic service, maintenance, repair. ISBN-10: 0892872349 | ISBN-13: 9780892872343 | Clymer M334