{"title":"Kansai Special Springs","description":"\u003cp\u003eKansai Special springs for levers, presser feet, thread tension and returns. Order by the Kansai Special part number.\u003c\/p\u003e\n\u003cp\u003eMore \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e, or \u003ca href=\"\/collections\/spare-parts\"\u003espare parts from all makers\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"kansai-special-05-3760-0-leaf-spring-upper","title":"Kansai Special 05-3760-0 Leaf Spring (Upper)","description":"\u003ch2\u003eKansai Special 05-3760-0 Leaf Spring (Upper)\u003c\/h2\u003e\n\u003cp\u003eKansai Special spare part 05-3760-0: Leaf Spring (Upper). This is an elastic metal part that stores force when it is bent, stretched or compressed and gives it back. This part appears in the Kansai Special parts books for FX.\u003c\/p\u003e\n\u003cp\u003eThe force of a spring depends on its wire or strip, its length and its shape. A spring that is weaker or stronger than the right one changes the pressure or tension wherever it acts, and adjusting cannot fully make up for it.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e05-3760-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Leaf Spring (Upper)\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 05-376\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eOn a flat or leaf spring, the curve and the bend positions count as much as the length, so check the shape against the old spring. 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\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe relaxed spring is shorter or flatter than a new one\u003c\/li\u003e\n\u003cli\u003eA setting no longer holds or the movement feels weak\u003c\/li\u003e\n\u003cli\u003eEnds that are bent open, worn through or no longer seating properly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTurn the handwheel by hand after fitting and check that the spring does not rub the frame, a cover or a neighboring part.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-87-1000-0-bolt\"\u003eKansai Special 87-1000-0 Bolt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-4160-0-needle-guard\"\u003eKansai Special 19-4160-0 Needle Guard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-4290-0-upper-knife\"\u003eKansai Special 05-4290-0 Upper Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-02-4940-0-rear-puller\"\u003eKansai Special 02-4940-0 Rear Puller\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMore in this group: \u003ca href=\"\/collections\/kansai-special-springs\"\u003eKansai Special springs\u003c\/a\u003e. Everything from this maker: \u003ca href=\"\/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":51105711292581,"sku":"KAN-05-3760-0","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"},{"product_id":"kansai-special-05-3770-0-leaf-spring-lower","title":"Kansai Special 05-3770-0 Leaf Spring (Lower)","description":"\u003ch2\u003eKansai Special 05-3770-0 Leaf Spring (Lower)\u003c\/h2\u003e\n\u003cp\u003eKansai Special spare part 05-3770-0: Leaf Spring (Lower). This is a spring that supplies the force for a specific movement or setting. Kansai Special shows it in the parts books for FX.\u003c\/p\u003e\n\u003cp\u003eA spring supplies the force that a lever, a foot or a thread control needs. When it tires, the setting drifts even though the adjustment looks right.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e05-3770-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Leaf Spring (Lower)\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 05-377\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnds that are bent open, worn through or no longer seating properly\u003c\/li\u003e\n\u003cli\u003eBright wear marks or grooves where the spring rubs another part\u003c\/li\u003e\n\u003cli\u003eA setting no longer holds or the movement feels weak\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFit it in the same position and hook it the same way, then check the force of the setting it controls.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eWhere the name carries a mark such as upper, lower or light, keep the same one. Springs with different marks are made for different positions or forces. One Kansai Special number can serve several related models, so compare the part with the old one.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-87-1000-0-bolt\"\u003eKansai Special 87-1000-0 Bolt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-4160-0-needle-guard\"\u003eKansai Special 19-4160-0 Needle Guard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-4290-0-upper-knife\"\u003eKansai Special 05-4290-0 Upper Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-02-4940-0-rear-puller\"\u003eKansai Special 02-4940-0 Rear Puller\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSame group: \u003ca href=\"\/collections\/kansai-special-springs\"\u003eSprings\u003c\/a\u003e. Same maker: \u003ca href=\"\/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":51105711390885,"sku":"KAN-05-377","price":5.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"},{"product_id":"kansai-special-05-4470-0-leaf-spring","title":"Kansai Special 05-4470-0 Leaf Spring","description":"\u003ch2\u003eKansai Special 05-4470-0 Leaf Spring\u003c\/h2\u003e\n\u003cp\u003eKansai Special 05-4470-0 is a leaf spring, an elastic metal part that stores force when it is bent, stretched or compressed and gives it back. This part appears in the Kansai Special parts books for FX.\u003c\/p\u003e\n\u003cp\u003eThe force of a spring depends on its wire or strip, its length and its shape. A spring that is weaker or stronger than the right one changes the pressure or tension wherever it acts, and adjusting cannot fully make up for it.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e05-4470-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Leaf Spring\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 05-447\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eOn a flat or leaf spring, the curve and the bend positions count as much as the length, so check the shape against the old spring.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe relaxed spring is shorter or flatter than a new one\u003c\/li\u003e\n\u003cli\u003eBright wear marks or grooves where the spring rubs another part\u003c\/li\u003e\n\u003cli\u003eRust or pitting on the wire or strip of the spring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInstall it in the same position and hook it the same way as the old spring, and check the adjustment that depends on it afterwards.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-87-1000-0-bolt\"\u003eKansai Special 87-1000-0 Bolt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-3930-0-plate\"\u003eKansai Special 05-3930-0 Plate\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-4160-0-needle-guard\"\u003eKansai Special 19-4160-0 Needle Guard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-4200-0-seal\"\u003eKansai Special 05-4200-0 Seal\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I stretch or shorten a spring to adjust it?\u003c\/strong\u003e\u003cbr\u003eNo. A modified spring will not give the force the mechanism was designed for. Replace it with the correct part.\u003c\/p\u003e\n\u003cp\u003eMore in this group: \u003ca href=\"\/collections\/kansai-special-springs\"\u003eKansai Special springs\u003c\/a\u003e. Everything from this maker: \u003ca href=\"\/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":51105711620261,"sku":"KAN-05-447","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"},{"product_id":"kansai-special-05-5490-0-leaf-spring-upper","title":"Kansai Special 05-5490-0 Leaf Spring (Upper)","description":"\u003ch2\u003eKansai Special 05-5490-0 Leaf Spring (Upper)\u003c\/h2\u003e\n\u003cp\u003eLeaf Spring (Upper), Kansai Special part number 05-5490-0. This is one of the springs that return a lever, press a part or hold a thread under tension. This part appears in the Kansai Special parts books for FX.\u003c\/p\u003e\n\u003cp\u003eThe force of a spring depends on its wire or strip, its length and its shape. A spring that is weaker or stronger than the right one changes the pressure or tension wherever it acts, and adjusting cannot fully make up for it.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e05-5490-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Leaf Spring (Upper)\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 05-549\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eSprings differ in length, wire thickness and force even when they look alike, so match the part number rather than the look.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnds that are bent open, worn through or no longer seating properly\u003c\/li\u003e\n\u003cli\u003eThe relaxed spring is shorter or flatter than a new one\u003c\/li\u003e\n\u003cli\u003eBright wear marks or grooves where the spring rubs another part\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHold the new spring next to the old one before fitting. Note which end goes where, and make sure each hook seats fully on its post or in its slot.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-5480-0-lower-knife\"\u003eKansai Special 05-5480-0 Lower Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-87-1000-0-bolt\"\u003eKansai Special 87-1000-0 Bolt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-3930-0-plate\"\u003eKansai Special 05-3930-0 Plate\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-4160-0-needle-guard\"\u003eKansai Special 19-4160-0 Needle Guard\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a spring that looks fine still need replacing?\u003c\/strong\u003e\u003cbr\u003eIt can. A spring may keep its shape and still have lost force. If a setting drifts after adjustment and the rest of the mechanism is sound, a tired spring is a likely cause.\u003c\/p\u003e\n\u003cp\u003eRelated: \u003ca href=\"\/collections\/kansai-special-springs\"\u003eSprings\u003c\/a\u003e | \u003ca href=\"\/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":51105711718565,"sku":"KAN-05-549","price":14.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"},{"product_id":"kansai-special-26-6390-0-spring","title":"Kansai Special 26-6390-0 Spring","description":"\u003ch2\u003eKansai Special 26-6390-0 Spring\u003c\/h2\u003e\n\u003cp\u003eKansai Special 26-6390-0 is a spring, an elastic metal part that stores force when it is bent, stretched or compressed and gives it back. This part appears in the Kansai Special parts books for NFS and FSX.\u003c\/p\u003e\n\u003cp\u003eCoil springs push, pull or twist, while flat and leaf springs bend. The type follows the movement it controls, so one kind cannot stand in for another.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e26-6390-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Spring\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 26-639\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NFS, FSX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eSprings differ in length, wire thickness and force even when they look alike, so match the part number rather than the look. One Kansai Special number can serve several related models, so compare the part with the old one.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRattling or buzzing from the spring area while the machine runs\u003c\/li\u003e\n\u003cli\u003eTension or pressure drifts even after adjustment\u003c\/li\u003e\n\u003cli\u003eThe relaxed spring is shorter or flatter than a new one\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSwitch the machine off and unplug it first, and wear eye protection when you hook or unhook a spring that is under load, because it can slip and fly off.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/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=\"\/products\/kansai-special-07-6310-0-upper-knife\"\u003eKansai Special 07-6310-0 Upper Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-6190-0-looper\"\u003eKansai Special 19-6190-0 Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-6170-0-spreader-looper\"\u003eKansai Special 19-6170-0 Spreader Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I stretch or shorten a spring to adjust it?\u003c\/strong\u003e\u003cbr\u003eNo. A modified spring will not give the force the mechanism was designed for. Replace it with the correct part.\u003c\/p\u003e\n\u003cp\u003eMore in this group: \u003ca href=\"\/collections\/kansai-special-springs\"\u003eKansai Special springs\u003c\/a\u003e. Everything from this maker: \u003ca href=\"\/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":51105715617957,"sku":"KAN-26-639","price":28.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"},{"product_id":"kansai-special-41-1050-0-spring-post","title":"Kansai Special 41-1050-0 Spring Post","description":"\u003ch2\u003eKansai Special 41-1050-0 Spring Post\u003c\/h2\u003e\n\u003cp\u003eThe Kansai Special 41-1050-0 is listed as a spring post. It is a part of a thread tension unit. The same part number is used across many Kansai Special machine families, for example FX, DFB and NW\/NL.\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\u003e41-1050-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Spring Post\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 41-105\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX, DFB, NW\/NL and 21 more\u003c\/li\u003e\n\u003c\/ul\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\u003eThe adjusting nut or knob turns freely but the tension does not change\u003c\/li\u003e\n\u003cli\u003eThread breaks, or the stitch is uneven although the settings are correct\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWipe the discs clean before you thread the machine, since oil or lint on them gives an uneven hold. Start with a light setting and raise it in small steps until the seam looks balanced.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eTension units and their parts differ by machine and thread type. 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=\"\/products\/kansai-special-41-1170-0-thread-guide\"\u003eKansai Special 41-1170-0 Thread Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-41-7020-0-spring-light\"\u003eKansai Special 41-7020-0 Spring (Light)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy will the tension not stay at the set value?\u003c\/strong\u003e\u003cbr\u003eA weak or rusted spring, grooved discs and a worn adjusting nut can each stop the unit from holding its setting. Clean the discs and check these parts before you change other settings.\u003c\/p\u003e\n\u003cp\u003eRelated: \u003ca href=\"\/collections\/kansai-special-springs\"\u003eSprings\u003c\/a\u003e | \u003ca href=\"\/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":51105715814565,"sku":"KAN-41-105","price":0.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"},{"product_id":"kansai-special-41-7020-0-spring-light","title":"Kansai Special 41-7020-0 Spring (Light)","description":"\u003ch2\u003eKansai Special 41-7020-0 Spring (Light)\u003c\/h2\u003e\n\u003cp\u003eKansai Special spare part 41-7020-0: Spring (Light). This is a coil, flat or leaf spring made to give a set force over a fixed travel. The same part number is used across many Kansai Special machine families, for example FX, DFB and NW\/NL.\u003c\/p\u003e\n\u003cp\u003eCoil springs push, pull or twist, while flat and leaf springs bend. The type follows the movement it controls, so one kind cannot stand in for another.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e41-7020-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Spring (Light)\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 41-702\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX, DFB, NW\/NL and 18 more\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eTwo springs of the same size can have different strength. Use the part number to get the force the mechanism was designed for.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA setting no longer holds or the movement feels weak\u003c\/li\u003e\n\u003cli\u003eRattling or buzzing from the spring area while the machine runs\u003c\/li\u003e\n\u003cli\u003eEnds that are bent open, worn through or no longer seating properly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFit it in the same position and hook it the same way, then check the force of the setting it controls.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-41-1170-0-thread-guide\"\u003eKansai Special 41-1170-0 Thread Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-41-1050-0-spring-post\"\u003eKansai Special 41-1050-0 Spring Post\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I stretch or shorten a spring to adjust it?\u003c\/strong\u003e\u003cbr\u003eNo. A modified spring will not give the force the mechanism was designed for. Replace it with the correct part.\u003c\/p\u003e\n\u003cp\u003eRelated: \u003ca href=\"\/collections\/kansai-special-springs\"\u003eSprings\u003c\/a\u003e | \u003ca href=\"\/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":51105716600997,"sku":"KAN-41-702","price":0.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"},{"product_id":"kansai-special-79-4270-0-spring","title":"Kansai Special 79-4270-0 Spring","description":"\u003ch2\u003eKansai Special 79-4270-0 Spring\u003c\/h2\u003e\n\u003cp\u003ePart 79-4270-0 in the Kansai Special parts list is a spring. It is an elastic metal part that stores force when it is bent, stretched or compressed and gives it back. The same part number is used across many Kansai Special machine families, for example FX, DFB and DLR.\u003c\/p\u003e\n\u003cp\u003eA spring supplies the force that a lever, a foot or a thread control needs. When it tires, the setting drifts even though the adjustment looks right.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e79-4270-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Spring\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 79-427\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX, DFB, DLR, FBX, WFB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe spring is stretched, bent, kinked or broken\u003c\/li\u003e\n\u003cli\u003eTension or pressure drifts even after adjustment\u003c\/li\u003e\n\u003cli\u003eA lever or part does not return fully after it is moved\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHold the new spring next to the old one before fitting. Note which end goes where, and make sure each hook seats fully on its post or in its slot.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eSprings differ in length, wire thickness and force even when they look alike, so match the part number rather than the look. One Kansai Special number can serve several related models, so compare the part with the old one.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-79-5220-0-spring\"\u003eKansai Special 79-5220-0 Spring\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-79-9120-0-spring\"\u003eKansai Special 79-9120-0 Spring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I stretch or shorten a spring to adjust it?\u003c\/strong\u003e\u003cbr\u003eNo. A modified spring will not give the force the mechanism was designed for. Replace it with the correct part.\u003c\/p\u003e\n\u003cp\u003eRelated: \u003ca href=\"\/collections\/kansai-special-springs\"\u003eSprings\u003c\/a\u003e | \u003ca href=\"\/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":51105717354661,"sku":"KAN-79-427","price":2.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"},{"product_id":"kansai-special-79-9120-0-spring","title":"Kansai Special 79-9120-0 Spring","description":"\u003ch2\u003eKansai Special 79-9120-0 Spring\u003c\/h2\u003e\n\u003cp\u003eThe Kansai Special 79-9120-0 is listed as a spring. It is an elastic metal part that stores force when it is bent, stretched or compressed and gives it back. Kansai Special lists this part in the books of many machine families, among them FX, NR and RX.\u003c\/p\u003e\n\u003cp\u003eA spring supplies the force that a lever, a foot or a thread control needs. When it tires, the setting drifts even though the adjustment looks right.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e79-9120-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Spring\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 79-912\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX, NR, RX and 7 more\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBright wear marks or grooves where the spring rubs another part\u003c\/li\u003e\n\u003cli\u003eEnds that are bent open, worn through or no longer seating properly\u003c\/li\u003e\n\u003cli\u003eRattling or buzzing from the spring area while the machine runs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInstall it in the same position and hook it the same way as the old spring, and check the adjustment that depends on it afterwards.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eTo check a coil spring, measure the free length, the wire diameter and the outer diameter of the old one, and count its coils. A stretched or broken spring gives a false length, so rely on the part number in that case. The part number is the safest check: the same number can be used on more than one model.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-79-5220-0-spring\"\u003eKansai Special 79-5220-0 Spring\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-79-4270-0-spring\"\u003eKansai Special 79-4270-0 Spring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/kansai-special-springs\"\u003eKansai Special springs\u003c\/a\u003e, or see \u003ca href=\"\/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":51105717616805,"sku":"KAN-79-912","price":2.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"},{"product_id":"kansai-special-79-5220-0-spring","title":"Kansai Special 79-5220-0 Spring","description":"\u003ch2\u003eKansai Special 79-5220-0 Spring\u003c\/h2\u003e\n\u003cp\u003ePart 79-5220-0 in the Kansai Special parts list is a spring. It is a coil, flat or leaf spring made to give a set force over a fixed travel. The same part number is used across many Kansai Special machine families, for example FX, DFB and BX.\u003c\/p\u003e\n\u003cp\u003eCoil springs push, pull or twist, while flat and leaf springs bend. The type follows the movement it controls, so one kind cannot stand in for another.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e79-5220-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Spring\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 79-522\u003c\/li\u003e\n\u003cli\u003eType: Springs\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX, DFB, BX, DLR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eTwo springs of the same size can have different strength. Use the part number to get the force the mechanism was designed for. 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\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTension or pressure drifts even after adjustment\u003c\/li\u003e\n\u003cli\u003eRust or pitting on the wire or strip of the spring\u003c\/li\u003e\n\u003cli\u003eEnds that are bent open, worn through or no longer seating properly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFit it in the same position and hook it the same way, then check the force of the setting it controls.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-79-4270-0-spring\"\u003eKansai Special 79-4270-0 Spring\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-79-9120-0-spring\"\u003eKansai Special 79-9120-0 Spring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRelated: \u003ca href=\"\/collections\/kansai-special-springs\"\u003eSprings\u003c\/a\u003e | \u003ca href=\"\/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":51105718042789,"sku":"KAN-79-522","price":2.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_spring_v2.png?v=1793912248"}],"url":"https:\/\/prizzisewing.com\/collections\/kansai-special-springs.oembed","provider":"PRIZZI SEWING MACHINE CO.","version":"1.0","type":"link"}