If you choose to accomplish adjustments for your Honda CB 400 N then it is usually recommended to own a Workshop Manual for a reference if perhaps you want to know the best way to take out a specific part for example Drive Shaft and fit it again correctly.
Honda CB 400 N Workshop Manuals offers clear particular diagnostic guides for your automobile so if something is playing up it helps you discover what the situation is and how you can correct it. Then you are able to assess if this can be done yourself or if ever the job is too big you can actually make a reservation for your CB 400 N in with a suitable mechanic.
Honda CB 400 N manual