TGB 203 50 Workshop Manuals
If you want to conduct adjustments for your TGB 203 50 then it is always recommended to have access to a Workshop Manual for personal reference should you want to know methods to strip off a particular component including Wheel Bearing and fit it again in the correct way.
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TGB 203 50 Workshop Manuals are able to offer specified diagnostic info for your motorcycle so if something is not working it will help you figure out what the issue is and tips to correct it. You can then decide if you can do this yourself or that the job is simply too big you could book your 203 50 into a decent mechanic.