Motoman, I fully agree. Attorneys are just like every other profession---there's good ones and bad ones. We'll see what review of my warranty claim brings forth, and go from there.
B&S manufactures 1000's of engines, and not one of them is ever started and run at the factory. However, each engine contains at least two valves, which must be carefully adjusted to tolerance about the thickness of a sheet of paper---a little too much or too little will make a huge difference in how well the engine runs, and how long it lasts. Manual for Intek 1450 actually expresses requirement that crucial valve adjustment be checked annually---this brings consideration of mechanical means used to maintain adjustment once made(i.e "keepers", "pins", "jam nuts", etc.). These means can also fail during crucial "break in" period. Valve adjustment can easily account for why a small engine runs too hot for a while, and then fails.
However, B&S clearly has deceitful method of totally ignoring crucial engine valve adjustment & maintenance---they trap a fellow in the "didn't clean the fly wheel" nonsense, and guess what? The trap allows B&S to avoid even considering improper valves, delivered from the factory, as cause of overheating. (Improper adjustment and failure of means used to maintain proper adjustment, are only a couple of things that can go wrong with valves---I assure you there are other common problems not herein mentioned.)
There can be no question that an improper adjustment to intake valve caused my engine to backfire, and I hope the B&S "warranty trap" backfires on them the same way. In this regard, TheCaffeinatedOne has mentioned the Oklahoma Attorney General, and I have determined that I can file online complaint with his Office at no cost---but I'll talk to an attorney first.
Thank you for an opportunity to share ideas.
For what it's worth, here's the fine print from the manual regarding what voids the warranty. Notice item 7 (cleaning instructions from manual are included post #19, this thread). (click image for larger view---use back arrow to return) This statement from B&S essentially says to clean the air cooling system as per instructions in the Operator's Manual, but those instructions do not state requirement to clean around the fly wheel, which would of course involve removal of the "finger guard".