I see that your mower has two pairs of idler pulleys, where the installation instruction drawing from the owner manual only shows one pair, so it seems your Greenfield is not the same as the one in the manual. What we need is for a Greenfield owner who recognises the setup in your pictures, to tell us whether you have it set up correctly. It looks to me as if it is probably right, so long as you have the correct side of the belt making contact with each pulley.