John Deere LX178 problem - starts-runs-dies-wait-starts-runs-dies
I have a John Deere LX178 with a 15HP Kohler-John Deere engine. The mower starts easy, runs and cuts grass for about 20 minutes, and then suddenly will shut off as if the key was turned off. Mower will not turn over or even try to turn over. Wait about 5 minutes and the mower will re-start easily and run again for about 15-20 minutes then shut off again. Anyone have any ideas of what can be wrong?