I have an older Craftsman 18hp mower with B&S engine. The connecting rod shattered during a backfire, and when I opened the crankcase I found a small part lying on the bottom that I can't identify. It is a C shaped piece of aluminum aprox. 1.5" x .75" x .25" thick. It has a hairpin spring on one end. It shows signs of being struck by connecting rod pieces, but does not look to be broken off something. I cannot figure out where this part goes, or find it in any of the parts diagrams. Can someone help with this?
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