{"product_id":"99944200903-speedfeed-450-trimmer-head-1","title":"Echo Trimmer Head 99944200903 - for SRM-266, SRM-266S, SRM-266T, SRM-266U","description":"\u003ch2\u003e99944200903 Speed-Feed 450 Trimmer Head\u003c\/h2\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFeatures a rapid-loading system for trimmer line refills.\u003c\/li\u003e\n\u003cli\u003eBump-feed mechanism advances line with a simple tap on the ground.\u003c\/li\u003e\n\u003cli\u003eHolds up to 20 ft. of 0.095 in. diameter trimmer line.\u003c\/li\u003e\n\u003cli\u003eConstructed with a durable, high-impact housing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReplaces \/ Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e99944200903\u003c\/li\u003e\n\u003cli\u003eX047000940\u003c\/li\u003e\n\u003cli\u003e28820-08000\u003c\/li\u003e\n\u003cli\u003e78890-21001\u003c\/li\u003e\n\u003cli\u003e385-288\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFits various ECHO straight-shaft grass trimmers and brushcutters.\u003c\/li\u003e\n\u003cli\u003eCommonly used on models such as the ECHO SRM266.\u003c\/li\u003e\n\u003cli\u003eRequires a 10 mm x 1.25 mm left-hand (LH) threaded arbor for installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe outer housing is cracked, broken, or excessively worn.\u003c\/li\u003e\n\u003cli\u003eThe bump knob fails to advance the trimmer line upon tapping.\u003c\/li\u003e\n\u003cli\u003eInternal components are worn and can no longer grip or feed the line properly.\u003c\/li\u003e\n\u003cli\u003eLine eyelets are damaged, causing the line to fray or break frequently.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect the spark plug before beginning installation for safety.\u003c\/li\u003e\n\u003cli\u003eLock the gearbox to prevent the head from rotating during removal.\u003c\/li\u003e\n\u003cli\u003eUnscrew the old head by turning it clockwise (it is reverse-threaded).\u003c\/li\u003e\n\u003cli\u003eSecure the new head by threading it on counter-clockwise until snug.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BlueStarsParts","offers":[{"title":"Default Title","offer_id":45860030152893,"sku":"AZ00122742","price":15.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2576\/7548\/files\/AZ00652119_1_d54a28c7-672b-4132-b9e4-816d2364712b.jpg?v=1762245598","url":"https:\/\/bluestarspartstrend.com\/products\/99944200903-speedfeed-450-trimmer-head-1","provider":"BlueStars Parts","version":"1.0","type":"link"}