I have a 04 Great Dane SS 52 inch with 17hp kawi. At 36 hours, the drive belt blew up. Took it to the shop, and they said that it may have been a bad belt. They said that there was nothing wrong with the mower. Now, at 44 hours the belt is coming apart again. Not sure what is going on here. I took a look at it yesterday, and the side with the belt tensioner on it looks like it is rubbing the hydro pully. I may be designed like this. I am not sure. Please let me know what you guys think.