Hello, I'm Danny.
You will have to remove the handle from the jack. You will use the small oblong end of the handle and fit it onto the release valve. The release valve is located at the base of the jack. To open/release the valve turn counter-clockwise. I've circled the valve in red on your supplied picture. Hope this helps and thanks again for using 2CarPros.
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Monday, November 25th, 2019 AT 12:07 PM