How do change the deck belt on a snapper rear engine riding mower??

Hi,
Owner's manuals are available a number of places online. Snapper has them. Free lawn and garden product owners manuals, user guides & how-to instructions | ManualsOnline (http://lawnandgarden.manualsonline.com/) may well have one. You will need to find your model number to get the right series (there are twenty some.)
Anyway how about this:
Peace,
Clarke