If you choose to conduct auto repairs on your own Sachs 49er then it will always be recommended to own a Workshop Manual to use as personal reference just in case you need to know methods to take out a specific component for example Wheel Bearing and fit it again safely.
Sachs 49er Workshop Manuals will give you unique diagnostic wisdom for the car or truck so if something is broken it will help you determine what the problem is and how to make it better. You will be able to assess if you can do this yourself or in the event the job is simply too big you could make a reservation for your 49er in with a decent repair garage.
Sachs 49er manual