If you have to do maintenance tasks to your Sym RV1 then it is usually a great idea to own a Workshop Manual to use as reference if you need to know the best ways to take out a particular component like the Brake Pads and fit it again accordingly.
Sym RV1 Workshop Manuals can offer you special diagnostic guides with regards to your car or truck so if something is playing up it helps you discover what the situation is and some ways to correct it. After that you can assess if you can do this on your own or if the job is simply too big you can actually book your RV1 in to a suitable repair garage.
Sym RV1 manual