If you have to do fixes to your Sym Orbit 50 then it will always be a good idea to have access to a Workshop Manual to use as a guide just in case you want to know easy methods to take off a certain component including Wheel Bearing and match it again perfectly.
Sym Orbit 50 Workshop Manuals will give certain diagnostic information on your car therefore if something is faulty it helps you determine what the issue is and how you can correct it. You will be able to analyse if you can do this by yourself or if ever the job is simply too big you could make a booking for your Orbit 50 into a decent repair garage.
Sym Orbit 50 manual