{"product_id":"252-trimmer-head-4002-710-2191-2pack","title":"25-2 AutoCut Trimmer Head - Fits Stihl FS55 FS56 FS70 FS80 - Replaces 4002-710-2191 - 2 Pack","description":"\u003ch2\u003e25-2 AutoCut Trimmer Head 4002-710-2191\u003c\/h2\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSemi-automatic, bump-feed line advance system.\u003c\/li\u003e\n\u003cli\u003eConstructed from high-impact plastic for durability.\u003c\/li\u003e\n\u003cli\u003eDesigned for simplified line reloading without head disassembly.\u003c\/li\u003e\n\u003cli\u003eArbor Size: 10mm x 1.0 Left Hand Female (LHF).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReplaces \/ Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSTIHL:\u003c\/strong\u003e 4002-710-2191, 4002-710-2108, 4002-710-2168, 4002-713-9608\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOregon \/ Stens \/ Rotary:\u003c\/strong\u003e 55-993, 385-861, 385-862, 25-2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eFits specific Stihl string trimmer models including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFS 44, FS 55, FS 55 R, FS 56, FS 56 R, FS 56 CE, FS 56 RC, FS 56 RCE\u003c\/li\u003e\n\u003cli\u003eFS 70, FS 70 R\u003c\/li\u003e\n\u003cli\u003eFS 80, FS 85\u003c\/li\u003e\n\u003cli\u003eFS 90, FS 90 R, FS 91 R, FS 94 R\u003c\/li\u003e\n\u003cli\u003eFS 100 RX, FS 110, FS 111 RX, FS 120, FS 130, FS 131\u003c\/li\u003e\n\u003cli\u003eFS 250\u003c\/li\u003e\n\u003cli\u003eFR 108\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVisible cracks, chips, or significant wear on the head housing.\u003c\/li\u003e\n\u003cli\u003eFailure of the bump-feed mechanism to advance line.\u003c\/li\u003e\n\u003cli\u003eWorn-out line eyelets causing premature line breakage.\u003c\/li\u003e\n\u003cli\u003eExcessive vibration during operation that is not related to the engine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect the spark plug wire before performing any maintenance.\u003c\/li\u003e\n\u003cli\u003eInsert a locking pin or small screwdriver into the designated hole on the gear head to prevent the shaft from turning.\u003c\/li\u003e\n\u003cli\u003eUnscrew the old trimmer head by turning it clockwise.\u003c\/li\u003e\n\u003cli\u003eScrew the new trimmer head on counter-clockwise until it is hand-tight.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BlueStarsParts","offers":[{"title":"Default Title","offer_id":45371210465469,"sku":"AZ17761169","price":22.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2576\/7548\/files\/AZ00137812_1.jpg?v=1764141086","url":"https:\/\/bluestarsparts.com\/products\/252-trimmer-head-4002-710-2191-2pack","provider":"BlueStars Parts","version":"1.0","type":"link"}