{"product_id":"check-spring-20","title":"Check Spring 66774 for Singer 1200, 1200-1 \u0026 More Sewing Machines","description":"\u003cp\u003eOEM-compatible tension part designed to restore proper upper thread control. Worn tension assemblies cause looping, thread breaks, and unbalanced stitching.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e\u003cbr\u003e1200, 1200-1, 1247, 1263, 1280, 1288, 1802, 1803, 1812, 1852, 1853, 1862, 1872, 1873, 201, 221, 222, 223, 237, 239, 240Srs., 2404, 2430, 247AP, 250Srs, 2712, 2718, 2722, 2724, 2730, 2732, 288, 301, 3101, 3102, 3103, 3105, 327, 328, 329, 337, 338, 347, 348, 353, 354, 360, 362, 366, 367, 401, 403, 404, 413k, 416k, 417, 418, 4522, 4525, 4526, 4528, 4530, 4538, 457, 466, 476, 477, 478, 4825, 4828, 4830, 500, 502, 503, 507, 509, 513, 514, 518, 522, 527, 533, 534, 538, 560, 600, 6011, 6012, 6021, 603, 604, 6102, 6104, 6105, 6106, 6110, 6120, 6130, 6136, 6146, 6152, 6156, 6174, 6184, 620, 625, 626, 628, 629, 6201, 6202, 620E31, 6211, 6212, 6214, 6215, 6217, 6221, 630E, 630E31, 635, 636, 638, 639, 640E, 645, 646, 648, 649, 6513, 6548, 6606, 7015, 7021, 7025, 7101, 7102, 7104, 7105, 7106, 7108, 7110, 7136, 7174, 8002, 8007, 8019, 8100, 8200, 8500, 8600, 8774, 9500, 9600, 9900, DL17,\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAccurate fit for listed machine models\u003c\/li\u003e\n\u003cli\u003eConsistent spring pressure for reliable tension\u003c\/li\u003e\n\u003cli\u003eEasy installation during repair or maintenance\u003c\/li\u003e\n\u003cli\u003eCompatible with original tension adjustment system\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e1 × CHECK SPRING (Part #: 66774)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHandling \u0026amp; Shipping:\u003c\/strong\u003e\u003cbr\u003eShips from USA stock when available. Professional packaging for safe delivery during transit.\u003c\/p\u003e","brand":"Universal\/Generic","offers":[{"title":"buy-now","offer_id":48490593747193,"sku":"66774","price":1.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/6733\/3113\/files\/66774_1_2ec5bfcf-9b4b-45c9-af70-3ee6a2125f3c.jpg?v=1780734162","url":"https:\/\/empenzoamericas.com\/products\/check-spring-20","provider":"Empenzo Americas Corp.","version":"1.0","type":"link"}