If you want to perform fixes for your Sherco SE 51i F then it is always recommended to have a Workshop Manual for a reference if perhaps you want to know methods to take off a particular part including Brake Discs and install it again appropriately.
Sherco SE 51i F Workshop Manuals provide you with special diagnostic information for your vehicle so if something is not working it helps you identify what the situation is and tips to resolve it. You can then determine if this can be done on your own or in case the job is too big you can actually make a booking for your SE 51i F in with a suitable friendly mechanic.
Sherco SE 51i F manual