Looking for a belt diagram to replace the belt on a 988 Toro Groundsmaster 220 that has a 72" mower deck

Hi,
The machine and the deck each have five digit model numbers and you can find them and get the manuals at the Customer Support section of the Toro site at:
Toro | Customer Support (http://www.toro.com/en-us/customer-support/pages/default.aspx)
Or you can put them here and I will give links,
Peace,
Clarke