Throttle body linkage on a 10 HP OHC Briggs

The starter rope handle has been pulled violently out of my hand from time to time on starts since about hour 10 of the roughly 150 hours I have put on the engine over 6 years.

I guess this would indicate the flywheel key has been a little out since the beginning???

Perhaps either the White Oak I just cut. The hardest wood I have cut since owning the saw and or the backfire sent the key over the top?

Eah????

Remember when I said we needed a good picture of what you are seeing to help you? Finally got the last part of your masterpiece. How much money can I pull on a bad key? Don’t need a puller, there are many videos on the web to show you how to do it. Not going to tell you how I do it, because it is too easy to damage something expensive if you make a mistake.