If you want to accomplish adjustments for your Sym DD 50 then it is usually a great idea to possess a Workshop Manual to keep just for a guide if perhaps you want to know the right way to take off a certain component for instance the Drive Shaft and install it again the right way.
Sym DD 50 Workshop Manuals gives you detailed diagnostic info for the automobile therefore if something is faulty it will help you discover what the problem is and tips to correct it. Then you are able to assess if you can do this yourself or if the job is simply too big you can still book your DD 50 in with a decent car garage.
Sym DD 50 manual