If you have to execute maintenance tasks to your MBK Booster X then it is always a good plan to have a Workshop Manual to use as reference in the event you need to know methods to remove a certain part such as the Drive Shaft and match it again the right way.
MBK Booster X Workshop Manuals can offer you particular diagnostic info on your car so if something is not working it will help you work out what the situation is and how you can correct it. After that you can determine if you can do this yourself or in the event the job is too big it is possible to make a reservation for your Booster X right into a decent friendly mechanic.
MBK Booster X manual