Needd part for Briggs 15 HP engine

I have a 15 HP Briggs and stratton engine and the small pump shaft pin is broken. It is maybe a $2 item but I can't buy it without the whole camshaft. Does anyone have this little piece from an old engine? I need the small arm that sits near the cam shaft and has a spring inside the arm . I guess it is there as a control for the oil ? I do not need the pump shaft itself as that piece is not broken. Just the little arm piece. the piece in question is about 3/4 inches long and rotates on the little pump shaft. The pump shaft fits into a hole on the cam gear very near to the Cam Shaft itself . that is the shaft with the lopes on it. Can someone please help with this?
The model is 28N707 TYPE 016001 CODE 9408014B please write to me here
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