273/904 Kickdown

Does anybody have a good picture of the factory kick down mechanism for a 273 and a 904. Here’s an alleged picture of one. For the life of me I’m not understanding the lever and moment arms to make this work correctly as I stare at mine. I know I don’t have the exact parts so I’m going to have to do a little fabrication but right now I’m not sure what I need to fabricate because I don’t understand the linkage

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