I took my machine in to the shop and they told me to oil it often, but I can't remember where to put the oil. I have two feet I purchased at a workshop some years ago, and I can't remember what they are for or how to get them to work. One is the clear circle foot, which I think is the freemotion foot, but I can't get it to install correctly, and the other is a big white plastic box with an arm to go on the s***w post on the right side of the post, which I can install but can't figure out what it is for.
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