Can a dirty muffler cause a push mower to sputter? If so, what's the best way to clean it? I've replaced the air filter but it still isn't running right. If I
![Briggs & Stratton push mower not starting after sitting for winter. More info in captions. : r/MechanicAdvice Briggs & Stratton push mower not starting after sitting for winter. More info in captions. : r/MechanicAdvice](https://preview.redd.it/49a4l6aw4p271.jpg?width=640&crop=smart&auto=webp&s=e13918b78cfa9dd0e14ee157af6468963543b6fb)
Briggs & Stratton push mower not starting after sitting for winter. More info in captions. : r/MechanicAdvice
![Help! Why is my riding mower struggling/sputtering? I just had it serviced (oil, air filter, fuel filter) but when I'm driving it has trouble when the engine is set to full throttle ( Help! Why is my riding mower struggling/sputtering? I just had it serviced (oil, air filter, fuel filter) but when I'm driving it has trouble when the engine is set to full throttle (](https://i.redd.it/72btot2oegrb1.png)