This handy guide from TotalFranchise can accompany you on visits to franchisors to make sure you have the key topics of discussion covered, or as an aid for discussion by telephone or skype. This is not an exhaustive list, and some questions will be more relevant than others depending on the franchise and the industry. So do not rely wholly on this document, ask all questions that come to mind.
Who are the Directors of the business?
What exactly would you be doing as the franchisee?
What territories are available, or if non-geographic territory system exists, what is the market available to you?
What is the profitability of a typical franchise?