John Deere L120 Stops Running - 9/21/08
My 5yr old L120 stops after just a few minutes of running, then only runs for 20 to 30 seconds with each subsequent start. It has a Briggs & Stratton 20hp INTEK twin engine which just had the carburetor rebuilt by JD to solve this problem. After the rebuild, the tractor was used to cut the lawn 5 times over a period of 5 weeks, then the problem surfaced again.
Along with the rebuild, new plugs, fuel filter, oil, and air filter were replaced.
The engine runs longer while on choke, but still eventually dies. I have sprayed carb cleaner into the carb and it will raise the rpms but eventually will die after a few seconds. I have tested the fuel pump - seems to be fine.
Any ideas would be greatly appreciated.