If you wish to do repairs on your own TGB Sunset 151 then it is always a good plan to have a Workshop Manual for a guide in the event you want to know ways to remove a specific component for instance the Brake Discs and match it again efficiently.
TGB Sunset 151 Workshop Manuals provides targeted diagnostic guidelines for the vehicle so if something is wrong it helps you find out what the situation is and the best way to correct it. You can then assess if this can be done on your own or that the job is simply too big it is possible to make a reservation for your Sunset 151 into a decent friendly mechanic.
TGB Sunset 151 manual