Bruno 1961

[bruno1961]

I have a Murray riding lawn mower with a Briggs & Stratton 14.5 OHV engine. It starts but after a few minutes of running it starts backfiring. I have cleaned the carburetor and replaced the main jet, reset the valves, new air filter, new spark plug set at 0.30, but still back fires. Was wondering if anyone knows what it could be. Thanks

 

[lawn mower fanatic]

I moved your thread to the Small Engine & Mower Repair Forum. :smile: