Need a diagram for replacing a drive belt for a 42 in poulan pro riding mower

Hi,
Look under the seat for the model number, and do tell if this drives the deck or the whole machine; or you can go to the Poulan Pro site at:
User Manuals | Poulan Pro (http://www.poulanpro.com/customer-support/user-manuals/)
And input the info yourself to get the manual of choice.
Peace,
Clarke