I have a Bolens st120 lawn tractor. It has a 12hp briggs I/C motor. The person I got it from ran something over and it wouldn't restart. The motor is backfiring out of the carb. This is my first small engine project and trying to learn as much as possible. Any help would be greatly appreciated... sorry about the dog bark in the video.
Someone told me to check the flywheel key so I striped it down and took a few pics since I dont know what it should to look like.
Someone told me to check the flywheel key so I striped it down and took a few pics since I dont know what it should to look like.


