{"product_id":"kansai-special-40-7510-0-thread-tension-set-heavy","title":"Kansai Special 40-7510-0 Thread Tension Set (Heavy)","description":"\u003ch2\u003eKansai Special 40-7510-0 Thread Tension Set (Heavy)\u003c\/h2\u003e\n\u003cp\u003eThread Tension Set (Heavy), Kansai Special part number 40-7510-0. This is a part of a thread tension unit. The same part number is used across many Kansai Special machine families, for example NW\/NL, NR and NRE.\u003c\/p\u003e\n\u003cp\u003eTension discs work together with the guides and the take-up. The guides lead the thread into the discs, the discs hold it back and the take-up manages the slack, so a worn unit upsets the pull on the thread at every stitch.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e40-7510-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Thread Tension Set (Heavy)\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 40-751\u003c\/li\u003e\n\u003cli\u003eType: Thread Guides \u0026amp; Tension\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NW\/NL, NR, NRE, NC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eA name with set, kit or assembly describes a group of pieces, while a plain spring or disc is a single piece. Make sure the name matches what you need to replace.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe thread tension cannot be set or does not stay set\u003c\/li\u003e\n\u003cli\u003eThread breaks, or the stitch is uneven although the settings are correct\u003c\/li\u003e\n\u003cli\u003ePulling the thread through gives jerks, or it sticks between the discs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAfter installing, thread the machine and test the tension on a scrap of the fabric you sew.\u003c\/p\u003e\n\u003cp\u003eSame group: \u003ca href=\"\/es\/collections\/kansai-special-thread-guides-and-tension\"\u003eThread Guides \u0026amp; Tension\u003c\/a\u003e. Same maker: \u003ca href=\"\/es\/collections\/kansai-special-spare-parts\"\u003eall Kansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105716240549,"sku":"KAN-40-7510-0","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_tension_v2.png?v=1793912248","url":"https:\/\/prizzisewing.com\/es\/products\/kansai-special-40-7510-0-thread-tension-set-heavy","provider":"PRIZZI SEWING MACHINE CO.","version":"1.0","type":"link"}