MTD GOLD HYDRO TRACTOR 50

Have a MTD Hydro was 290 hours on it. Engine runs good, cuts good,needs a deck belt shredded it here last year and never got a chance to put it on. The only thing is after 30 minutes and the Hydro gets warm and it kinda stumbles and let it cool for about a half hour then you get another half hour of mowing probably needs a new Hydro otherwise everything else is good on the tractor. If youre morning, just flatland it runs longer. Its just when youre trying to navigate hills a little bit. Asking $300 OBO.