hydo belt on gravley 44z

have a 44z mower brought new in 2005 have 380 hours on this mower. since 2009 at 295 hour had to change the belt because it broke since then i have changed it 2 more time and then today it broke again. i do all my own repair but i don't know with to do any help would be appreciate.

Model and serial please, lets make sure you are getting the correct belt. If you do not get the exact OEM then you will have problems on this one. When the belt is breaking, does it look like it is catching on something and tearing, or is it a clean break. Possibly bearing going bad in one of the pulleys.

Get me the part number for the belt you have installed and your model and serial and I will let you know if it is the correct belt.