Small Engines (Lawn Mowers, etc.): Blade removal, plug hole, impact wrench

Question
i know this sounds stupid, but what is the best way to remove a Lawnboy blade?  It was previously tightened with an impact wrench, and i can't get it off by pushing on it and using a combo wrench.  I know there are Blade Busters to get them off, but do they work?

Answer
Hello Eric:

Place a Bolt (approx 4in long and threaded 3in) the Same Diameter and Threads as the Spark Plug. Screw the Bolt Into the Spark Plug Hole and Block the Piston from Moving. Now Using a Hammer and Breaker Bar, you Should be Able to Remove the Blade. Remember, the Blade Loosens by Turning the Nut the Same Direction as the Engine Rotation. Hope this Helps. I am here if you Require more assistance. Let me know what Happens, Please. Thanks.

Good Luck

Respectfully

John