Hi to all.. I have been online for about an hour trying to get some info about me STX 38 riding lawn mower... I was mowing last week when the blades just stopped. I did not hit anything and the belts are fine and I moved the main pulley by hand and it turns freely so I dont know what else to check. I bought the mower at the beginning of summer and have had some problems with it but its been running fine for the last 5 or 6 mowings.