If you want to execute auto repairs to your Honda CB 350 then it is usually a great idea to own a Workshop Manual to keep just for reference if perhaps you want to know how you can take out a certain part such as the Clutch and fit it again the right way.
Honda CB 350 Workshop Manuals can offer you certain diagnostic facts on your vehicle so if something is not working it will help you find out what the problem is and how to resolve it. Then you are able to decide if this can be done on your own or in case the job is simply too big you can actually book your CB 350 in to a suitable garage.
Honda CB 350 manual