If you want to execute fixes on your Motobi Velvet 400 then it is usually a good plan to own a Workshop Manual to use as a reference just in case you want to know methods to remove a specific part like the Brake Discs and match it again efficiently.
Motobi Velvet 400 Workshop Manuals provide you with specified diagnostic details for your automobile therefore if something is playing up it helps you determine what the issue is and easy methods to repair it. You will be able to evaluate if you can do this yourself or in the event the job is just too big you could make a reservation for your Velvet 400 in with a decent mechanic.
Motobi Velvet 400 manual