{"product_id":"kansai-special-07-6310-0-upper-knife","title":"Kansai Special 07-6310-0 Upper Knife","description":"\u003ch2\u003eKansai Special 07-6310-0 Upper Knife\u003c\/h2\u003e\n\u003cp\u003ePart 07-6310-0 in the Kansai Special parts list is an upper knife. It is the blade that cuts off the surplus fabric or the thread chain at the seam. The Kansai Special parts books for NFS and FSX list this part.\u003c\/p\u003e\n\u003cp\u003eThe cutting pair of an overlock or chainstitch machine wears with every seam it trims. A dull or chipped blade shows first as frayed edges and thread ends left hanging.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e07-6310-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Upper Knife\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 07-631\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NFS, FSX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWorn so short that the blade can no longer be set to its partner\u003c\/li\u003e\n\u003cli\u003eThe fabric edge frays or is cut unevenly\u003c\/li\u003e\n\u003cli\u003eMore knife pressure is needed than before to cut cleanly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen you replace one knife, check the partner. If its edge is chipped, rounded or burred, replace both. Set the knife pressure and timing as the manual for your machine describes. Knife edges are very sharp, so handle them with care. Switch the machine off and unplug it before you start, and turn the handwheel by hand through a full stitch before the first run.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eKnives are specific to the machine and its cutting mechanism, and many are handed (left or right, upper or lower). Keep the same side and position as the knife you remove. Compare the part with your old one or with your machine's parts list, because one number can serve several related models.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/es\/products\/kansai-special-19-6190-0-looper\"\u003eKansai Special 19-6190-0 Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/es\/products\/kansai-special-19-6170-0-spreader-looper\"\u003eKansai Special 19-6170-0 Spreader Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/es\/products\/kansai-special-07-6340-0-lower-knife\"\u003eKansai Special 07-6340-0 Lower Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/es\/products\/kansai-special-27-6450-0-cover\"\u003eKansai Special 27-6450-0 Cover\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow tight should the knife pressure be?\u003c\/strong\u003e\u003cbr\u003eOnly as tight as a clean cut needs. Extra pressure heats and wears both blades faster. Set it as the manual for your machine describes and test on a scrap of the fabric you sew.\u003c\/p\u003e\n\u003cp\u003eRelated: \u003ca href=\"\/es\/collections\/kansai-special-knives-and-cutters\"\u003eKnives \u0026amp; Cutters\u003c\/a\u003e | \u003ca href=\"\/es\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105711915173,"sku":"KAN-07-631","price":15.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220","url":"https:\/\/prizzisewing.com\/es\/products\/kansai-special-07-6310-0-upper-knife","provider":"PRIZZI SEWING MACHINE CO.","version":"1.0","type":"link"}