I noticed my mower started to sound rough and at times, sounds like it's lacking power. I remove the air filter while it's running and notice some spurts of gas shooting back out. I tried moving the choke back and forth and it only bogs the motor down until I let go of it. Once I start cutting the grass, it sounds like it's about to turn off and that's without the filter in place. I took apart the plastic carburetor to clean everything and made sure the float was seated correctly. Another thing I noticed was the spark plug is dark. Below is a quick video:
https://youtu.be/2v1Ca3YGD6I
https://youtu.be/2v1Ca3YGD6I