go to mtd website,click on "owners manual",enter model and serial #s,-will be given choice of 4-5 pdf links(the last one worked for me)-is graphics heavy/wait to load.Scroll down to your mower (exploded views).REMEMBER,your 3 pullys above/on your blade shafts have NO latteral movement.Look on your mower deck (opposite of discharge),locate the large gold spring and detach from post(leave inner end of spring connected)-Locate bracket that inner end of spring is connected to,( a tensioner pully is connected to this bracket )-place one end of a short piece of wood (1 ft long ? )-against the bracket and tap on other end with hammer untill pully is close enough to put belt in place.After belt is in place,use pliers to pull large gold spring back onto outer securing post.
David, August 2009