Sorry, you are absolutely correct. I just wasn't thinking. I have a new belt ordered. THe spring and the idler pulley looks OK, but I will inspect when I change belts. THanks for your comments.
The Husqvarna RZ 5426 does not have a drive belt. Has 2 hydraulic pumps, one for eacj =h wheel. Mine is doing the same thing and I am also looking for an answer.