If you wish to accomplish adjustments for your Honda CB 450 N then it is usually a great idea to possess a Workshop Manual for personal reference if you want to know the way to strip off a certain component much like the Gearbox and fit it again properly.
Honda CB 450 N Workshop Manuals will give exact diagnostic facts on your vehicle so if something is not working it helps you work out what the issue is and some ways to make it better. You will be able to determine if this can be done yourself or if ever the job is just too big you can still make a reservation for your CB 450 N right into a decent mechanic.
Honda CB 450 N manual