If you choose to perform maintenance tasks on your Suzuki Boulevard M95 then it is usually a good idea to own a Workshop Manual to keep just for personal reference should you need to know tips on how to take off a specific component including Gearbox and fit it again effectively.
Suzuki Boulevard M95 Workshop Manuals will give identifiable diagnostic guidelines on your automobile so if something is broken it helps you ascertain what the issue is and the best way to resolve it. You can then analyse if this can be achieved yourself or in case the job is too big you could make a reservation for your Boulevard M95 right into a local car garage.
Suzuki Boulevard M95 manual