need mower belt set-up on the mower deck. how to install, please

If you have three blades you will find 5 pulleys on the deck. One pulley on each blade axle, another stationary pulley and the then a spring loaded tensioner pulley. Put you belt around the outside of the blade pulleys in a big triangle, then around the inside of the stationary pulley. This breaks your triangle and now pull on the tensioner as hard as you can poull the spring. Peel the belt over the tensioner, when you re;lease it everything gets tight.

Thanks