If you choose to do repairs for your Triumph Bonneville Europa then it is usually recommended to have a Workshop Manual to use as personal reference in the event you need to know the best way to take out a particular component including Drive Shaft and install it again perfectly.
Triumph Bonneville Europa Workshop Manuals provide you with unique diagnostic guidelines for your automobile therefore if something is faulty it will help you understand what the issue is and the way to resolve it. After that you can assess if this can be achieved yourself or if the job is simply too big you are able to book your Bonneville Europa into a decent mechanic.
Triumph Bonneville Europa manual