John its not really hard to tighten belts .. just sometimes hard to get to. On your vehicle you have belt tensioners. I have inclosed a diagram to tell you where they are located. Usually the front side of the sensioner pulley will have a 14mm nut holding it steady this nut must be loosened slightly. NOT REMOVED. just enough for the pulley to be able to slide. Then at the top or directly bottom of the assymbley there will be a bolt to tighten or loosen the belt tensioner. See diagram Little difficult to explain. but when you tighten this bolt it will pull the pulley along with the belt to tighten. just remember to tighten the nut on the face of this tensioner pulley when done. or else you may loose a pulley and belt later.
ASE Certified Technician
20 years in the industry A.S.E. master certified