MTD riding mower won't start
I have a 4-5 year old Ranch King by MTD riding mower. It has a 12.5 HP single-cylinder Briggs & Stratton engine.
I was mowing grass the other day, going VERY slow because the grass was kinda high. Suddenly, I heard a noise and the mower jolted a little...then the engine started struggling so I immediately turned it off. Light smoke was coming out of the flywheel. Now it will not start. It cranks, but it will not catch. I don't think I hit anything...the blades look okay and I couldn't find anything in the yard near where it happened.
It has a new battery, purchased maybe a month ago. The gas tank is full...so is the oil. I have installed a new spark plug...though I am not sure its sparking. I have taken the plug out (kept it connected) and turned the key...it shocked me but I couldn't see a spark on the end of the plug. I can see the piston moving inside the spark plug hole, so the rod is not broken. I have tried putting gas directly into the cylinder to no avail.
Anyone have any ideas what it could be?