Depends on age warranty claim or replace is the best way because of marketing technical design of this machines and your own safety or for others depends on where it leaks.
If its an expensive machine there are cuff kits for to get but if you selling a kit it can happen that there are for one model more differences made on marketing technics development and changed parts in between one or 2 years of age difference , so year of build and serial number can be neccesary but it does not have to be, but err on the side of caution.