ur belt stretched u can buy a spray that makes it stick, but it sounds like that wont work for u, buy a belt, then look in ur owners manual, but one of ur pullies moves so u can put the belt on, then once one is will tighten itself, I think they call it the tensioner. I had to do it once myself bc I had no other way and it wasnt bad at all. Goood luck, ull get it!!!!