{"product_id":"juki-a4145335000-lower-knife","title":"JUKI A4145335000 Lower Knife","description":"\u003ch2\u003eJUKI A4145335000 Lower Knife\u003c\/h2\u003e\n\u003cp\u003eJUKI spare part A4145335000: Lower Knife. This is a cutting knife of the machine.\u003c\/p\u003e\n\u003cp\u003eKnives cut the thread, trim the fabric edge on overlock and similar machines, or cut the slit of a buttonhole. They work as a pair: a moving knife against a fixed (counter) knife, an upper knife against a lower knife on an overlock machine, or a buttonhole knife against its cutting block. The cut is clean only when both edges are sharp and meet with light pressure, so knives are regular wear items. On an overlock machine the lower knife is the fixed blade that the moving upper knife shears against.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eJUKI part number: \u003cstrong\u003eA4145335000\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name in the JUKI catalog: Lower Knife\u003c\/li\u003e\n\u003cli\u003eType: Knives\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eJUKI lists this part under the number above, but we do not show a list of machines for it yet. Tell us your machine model and serial number and we will confirm that it fits before you order.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThreads are not cut cleanly or are left hanging\u003c\/li\u003e\n\u003cli\u003eThe fabric edge frays or is cut unevenly\u003c\/li\u003e\n\u003cli\u003eThere are chips or nicks along the cutting edge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen you replace one knife, check the partner (the fixed or lower knife, or the cutting block on a buttonhole machine). If its edge is chipped, rounded or burred, replace both. Set the knife pressure and timing as the JUKI Engineer's Manual for your model 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 trimmer or overlock mechanism, and many are handed (left or right, upper or lower). On buttonhole machines the size in the name, for example 5\/8, is the buttonhole length the knife cuts. Spare parts are supplied to order; contact us for current availability.\u003c\/p\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWill JUKI A4145335000 fit my machine?\u003c\/strong\u003e\u003cbr\u003eSend us your machine model and serial number and we will check it against the JUKI parts list before you order.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I replace both knives at once?\u003c\/strong\u003e\u003cbr\u003eOften, yes. The moving (upper) knife usually wears first, but a new knife against a chipped or rounded partner cuts poorly and wears faster. If the partner's edge is still clean and sharp, replacing one knife is fine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I order the right part?\u003c\/strong\u003e\u003cbr\u003eOrder by the JUKI part number A4145335000. Part numbers in the JUKI catalog are exact, so the number identifies the part.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":50679062429861,"sku":"JUK-A4145335000","price":4.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/knife.png?v=1791205959","url":"https:\/\/prizzisewing.com\/products\/juki-a4145335000-lower-knife","provider":"PRIZZI SEWING MACHINE CO.","version":"1.0","type":"link"}