{"product_id":"966674401-t25-tap-trimmer-advance-head","title":"128LD T25 Trimmer Head - Fits Husqvarna 124L, 125L, 128L, 128LD - Replaces 966674401","description":"\u003ch2\u003e128LD Trimmer Head T25\u003c\/h2\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Efficiency Tap 'N Go Feed:\u003c\/strong\u003e Specifically designed for entry-level and mid-range trimmers, the T25 head provides reliable line advancement with a simple tap on the ground, allowing for continuous operation without stopping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy-Reload Open Eyelets:\u003c\/strong\u003e Features a simplified spool design with open eyelets that make reloading trimmer line faster and less prone to tangling compared to traditional closed-loop heads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinforced Blue Bump Knob:\u003c\/strong\u003e The signature blue knob is manufactured from high-density, wear-resistant polymer to ensure a long lifespan even when used on abrasive surfaces like gravel or dry soil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Centrifugal Balance:\u003c\/strong\u003e Engineered to reduce vibration and shaft wobble, which protects the trimmer's flexible drive cable and reduces user fatigue during extended yard work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Wound Performance Line:\u003c\/strong\u003e Usually comes pre-loaded with premium 0.080\" or 0.095\" diameter line, offering an aggressive cut and high durability for residential trimming and edging.\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\"\u003e966674401\u003c\/li\u003e\n\u003cli\u003e537338306\u003c\/li\u003e\n\u003cli\u003e537338310\u003c\/li\u003e\n\u003cli\u003e5373383-02\u003c\/li\u003e\n\u003cli\u003e578446101\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eThis \"T25\" head is the standard replacement for Husqvarna's lightweight and consumer-grade straight-shaft trimmers. Key compatible models include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHusqvarna 120 Series:\u003c\/strong\u003e 122L, 124L, 125L, 125C, 125LDX, 128L, 128LD, 128LDX, 128R, 128RJ, 129L, 129LD.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHusqvarna 200 \u0026amp; 300 Series:\u003c\/strong\u003e 223L, 223R, 322C, 323C, 325C, 325CX.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Specification:\u003c\/strong\u003e Fits models utilizing an \u003cstrong\u003eM10 x 1.25 LHF\u003c\/strong\u003e (Left Hand Female) arbor thread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e While designed for straight-shaft trimmers, it is also compatible with specific Husqvarna curved-shaft models that use the M10 thread.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorn-Through Bump Surface:\u003c\/strong\u003e The blue center knob has ground down from pavement contact to the point where the internal spring is visible or the line no longer advances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCracked Outer Housing:\u003c\/strong\u003e Visible fractures or chips in the black plastic shell, which can lead to the head shattering at high RPMs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine Overlapping\/Welding:\u003c\/strong\u003e The internal spool or divider is damaged, causing the line to melt together or jam inside the head during use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyelet Failure:\u003c\/strong\u003e The metal line exits (eyelets) are missing or have developed deep grooves, causing the trimmer line to snap off inside the head repeatedly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcessive Vibration:\u003c\/strong\u003e The head is no longer balanced due to uneven wear, putting undue stress on the gear head and the trimmer's motor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeft-Hand Threads:\u003c\/strong\u003e This head is \u003cstrong\u003eLeft-Hand Threaded\u003c\/strong\u003e. To tighten it onto the trimmer, you must turn the head \u003cstrong\u003eCounter-Clockwise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLock the Shaft:\u003c\/strong\u003e Insert a small hex key or the factory locking pin into the gear head hole to hold the shaft stationary while you spin the old head off and the new one on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpool Direction:\u003c\/strong\u003e When reloading line, follow the arrows molded into the internal spool. Winding the line in the wrong direction will prevent the Tap 'N Go mechanism from functioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoak Your Line:\u003c\/strong\u003e To extend the life of your trimmer line, soak the spool in water for 24 hours. This keeps the nylon flexible and much more resistant to snapping at the eyelet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean the Housing:\u003c\/strong\u003e Every time you reload the line, shake out any dirt or grass trapped inside the head to ensure the internal spring and spool move freely.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BlueStarsParts","offers":[{"title":"Default Title","offer_id":45371209842877,"sku":"AZ00165870","price":14.04,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2576\/7548\/files\/AZ00165870_1_c3bae4ca-5beb-4490-bef6-35e001b65f00.jpg?v=1762246294","url":"https:\/\/bluestarspartstrend.com\/products\/966674401-t25-tap-trimmer-advance-head","provider":"BlueStars Parts","version":"1.0","type":"link"}