It was the fuel filter under the tractor. The people that sold it to me had told me filters were changed. Obvious to me only the one in engine compartment had been. They have lost my business.
Help. Bx2660 has started to oscillate, run rough and lose power after it's warmed up. Acted up last use which was most of the day. Now within about 10 minutes. Starts and runs fine at first.