If you want to carry out auto repairs to your Suzuki GN 400 TD then it is usually a good idea to have a Workshop Manual to keep just for a guide if you need to know how to strip off a specific part for example Brake Discs and fit it again perfectly.
Suzuki GN 400 TD Workshop Manuals offers you unique diagnostic details for your vehicle therefore if something is playing up it helps you figure out what the problem is and methods to make it better. Then you are able to assess if you can do this on your own or if ever the job is simply too big it is possible to make a reservation for your GN 400 TD into a local garage.
Suzuki GN 400 TD manual