{"product_id":"upper-looper-330636","title":"Upper Looper #330636 for Pfaff 797 Serger","description":"\u003cp\u003eThis is the upper looper for the Pfaff 797 overlock machine, numbered 330636 and cross-referenced in parts lists as 29-924993-70\/534. On a serger the upper looper swings up and over the trimmed fabric edge, carrying the top thread of the overlock stitch so it can interlock with the needle thread and the lower looper thread.\u003c\/p\u003e\u003cp\u003eA looper point that has been nicked by a needle strike or bent in a jam shows up as skipped stitches along the top of the seam, a shredding upper looper thread, or loops that stop short of the edge. This listing is for one machine only, the Pfaff 797. You receive one upper looper.\u003c\/p\u003e\u003ch2\u003eCompatible machines (1)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePfaff:\u003c\/strong\u003e 797\u003c\/p\u003e\u003cp\u003eThe 797 model number is printed on the serger's rating plate. If an older parts diagram calls for 29-924993-70\/534 in the upper looper position, that is this same piece.\u003c\/p\u003e","brand":"Sewlume","offers":[{"title":"Default Title","offer_id":68196193501272,"sku":"330636","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/4092\/8600\/files\/upper-looper-330636-1.jpg?v=1794544026","url":"https:\/\/sewlume.com\/products\/upper-looper-330636","provider":"Sewlume","version":"1.0","type":"link"}