Small Engines (Lawn Mowers, etc.): sears transaxle, belt tension, transaxle

Question
HELLO 19.5 sears 42 inch cut will pull for about 15 minute then it start slowing down foward or reverse, have check belt and tenison.are there any way to fix this problem or is this time to buy new transaxle.Number 150071 and 319 0650 If I pull this transaxle apart what should I be looking for Thanks

Answer
 Hello Mike:

 Who is the OEM of the Transaxle, Please. Is the Transaxle Clean and the Cooling Fan Working Properly? Have you Checked the Belt Tension when this Occurs. I had the Same Problem and the Belt was 1/2' Longer when Hot than Cold and was Causing the Problem. If the Belt isn't Slipping when Hot, then I Suggest you Purchase a New Transaxle. Internal Problems with Hydromatic/Hydrostatic  Transaxles are Not for Home Owners to Tackle. Sorry. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John