My Exmark ZTR is a 27hp, 60". Model: Exmark LZ27KC604 The mule drive belt has broken, so I had to purchase a new belt - 103-4014. I put the new belt around every pulley except for the idler pulley. I tried using a wrench to leverage the idler pulley up while I squeezed the belt around. The idler pulley was pushed up as far as possible before it came to a stop, and I till could not get the belt around the pulley. It seemed as if the belt was too short or something. Can someone please give me some advice on installing the mule drive belt? Please Help - Thanks.