My John Deere L120 keep cutting off(go dead).

[DJP]

I have a older L120 20-HP Brig. & Stratton every 15 to 20 minutes of cutting it shuts off go dead. I get off and pour gas down in the cooperator and it starts back up. Run again 15 to 20 minutes and it ***** off again. Do I need to change my fuel pump or the fuel filter???? Also why my cutting blades(The edge cutting system) stalls at times and pick back up with speed????? I put a bigger hole in the fuel tank cap, but it did not stop the cutting off.

 

[beenthere]

I'd look at debris plugging up the fuel system, beginning at the fuel tank. Sounds like fuel starved. A nuisance for sure, but wouldn't change out the fuel pump right off the get-go. Track it down and know you have good flow through the fuel lines first.

Assume "cooperator" is the carburetor.

 

[Richard001]

Dj - have you looked under the fan shroud? Could be that you have a mouse nest in there that is causing the engine to overheat and thus causing it to stall.

Richard

 

[Nromes]

Definitely check for fuel blockage. Look at replacing your in line fuel filter.

 

[jenkinsph]

Check vent on fuel cap.