Small Engine Problems? Ask an Engine Mechanic for Answers ASAP
Has there been any impacts with the blade? Have you adjusted the valves recently?
Is this the mower you're working on?
Make: MTD Pros SeriesModel: 287707 (off engine)
If you are getting flames from the carb, it should be related either to the wrong air/fuel mixture, valves, or timing.
When you replaced the fuel solenoid, did you flush the gas tank and replace the fuel line?
Why don't you take a look in the carburetor bowl and see if you see any signs of sediment or residue, please. I would also suggest looking for any plugging in the main jet. If you can give me the type and code numbers that are listed after the 287707 on your engine I should be able to get you a diagram showing you exactly where to look.
Thank you. You'll have either a Walbro or Nikki carburetor on there. Here's a link to a breakdown.
The main jet is 117/117A depending on which style you have. Take a look for sediment and plugging in any of the passages, please. A piece of soft wire like a bread tie can be used to clear the passages. Spray carb cleaner is a good idea too. But still probe with the wire.
Let me know and we'll continue...