If you have to perform maintenance tasks on your Honda VTX 1800 C then it is usually a good plan to own a Workshop Manual to use as personal reference if you want to know easy methods to strip off a certain component for instance the Exhaust and match it again in the correct way.
Honda VTX 1800 C Workshop Manuals can offer you specific diagnostic info for the vehicle so if something is playing up it helps you identify what the situation is and some ways to correct it. After that you can decide if you can do this on your own or in case the job is too big you can still make a reservation for your VTX 1800 C right into a decent car garage.
Honda VTX 1800 C manual