I just call it the Float lock button. One of our sponsors at the top of the page will more than likely have what you need. With your description I am sure they will know what you are needing. I am pretty sure they are NLA from the dealer. They don't even show up in the parts diagram.
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DWayne
1973: 128, ag tires, 3pt. lift, spring assist, lights, 42" Deck
10" moldboard plow
2016 XT1 42" deck 18HP
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