{"product_id":"lawn-mower-trimmer-gear-box-head-cutter-strimmer-grass-replacement-for-stihl-fs36-fs40-fs44-fs55-fs72-fs74-fs75-fs76-weed-eater","title":"Lawn Mower Trimmer Gear Box Head Cutter Strimmer Grass Replacement for Stihl FS36 FS40 FS44 FS55 FS72 FS74 FS75 FS76 Weed Eater","description":"\u003ch3 data-path-to-node=\"1\"\u003e\u003cb data-path-to-node=\"1\" data-index-in-node=\"0\"\u003eKey Features\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul data-path-to-node=\"2\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"2,0,0\"\u003e\u003cb data-path-to-node=\"2,0,0\" data-index-in-node=\"0\"\u003eHigh-Grade Aluminum Alloy Construction:\u003c\/b\u003e The gearbox housing is manufactured from premium aluminum alloy, offering excellent thermal dissipation, corrosion resistance, and lightweight durability for reduced operator fatigue.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"2,1,0\"\u003e\u003cb data-path-to-node=\"2,1,0\" data-index-in-node=\"0\"\u003eSmooth Power Transfer:\u003c\/b\u003e Features precision-engineered internal gears designed to deliver high torque and consistent RPM transfer from the drive shaft to the cutting head under heavy landscaping loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"2,2,0\"\u003e\u003cb data-path-to-node=\"2,2,0\" data-index-in-node=\"0\"\u003eComplete Replacement Combo:\u003c\/b\u003e Includes both the heavy-duty gear case and a matching trimmer head, allowing you to completely refresh your equipment’s lower drive system in one go.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"2,3,0\"\u003e\u003cb data-path-to-node=\"2,3,0\" data-index-in-node=\"0\"\u003ePrecision Factory Tolerance:\u003c\/b\u003e Designed to meet or exceed original equipment standards for a secure fit, minimizing shaft vibration and maximizing tool operating life.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"4\"\u003e\u003cb data-path-to-node=\"4\" data-index-in-node=\"0\"\u003e\u003c\/b\u003e\u003c\/h3\u003e\n\u003ch3 data-path-to-node=\"4\"\u003e\u003cb data-path-to-node=\"4\" data-index-in-node=\"0\"\u003eCrucial Fitment \u0026amp; Drive Shaft Notice\u003c\/b\u003e\u003c\/h3\u003e\n\u003cblockquote data-path-to-node=\"5\"\u003e\n\u003cp data-path-to-node=\"5,0\"\u003e\u003cb data-path-to-node=\"5,0\" data-index-in-node=\"0\"\u003ePlease Read Before Purchasing:\u003c\/b\u003e To ensure proper installation and prevent component damage, you must verify your equipment's drive shaft shape.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cul data-path-to-node=\"6\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,0,0\"\u003e\u003cb data-path-to-node=\"6,0,0\" data-index-in-node=\"0\"\u003eDrive Shaft Requirement:\u003c\/b\u003e This gearbox is engineered exclusively for \u003cb data-path-to-node=\"6,0,0\" data-index-in-node=\"68\"\u003eRound Drive Shafts\u003c\/b\u003e. It \u003cb data-path-to-node=\"6,0,0\" data-index-in-node=\"91\"\u003eWILL NOT FIT\u003c\/b\u003e square drive shafts. Please inspect your trimmer's flex or solid shaft tip before ordering.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"7\"\u003e\u003cb data-path-to-node=\"7\" data-index-in-node=\"0\"\u003e\u003c\/b\u003e\u003c\/h4\u003e\n\u003ch4 data-path-to-node=\"7\"\u003e\u003cb data-path-to-node=\"7\" data-index-in-node=\"0\"\u003eOfficial Application Matrix\u003c\/b\u003e\u003c\/h4\u003e\n\u003ctable data-path-to-node=\"8\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMake\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Trim \u0026amp; Brushcutter Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Drive Configurations\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,0,0\"\u003e\u003cb data-path-to-node=\"8,1,0,0\" data-index-in-node=\"0\"\u003eStihl\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,1,0\"\u003eFS36, FS40, FS44, FS65, FS72, FS74, FS75, FS76, FS80, FS80R, FS85\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,2,0\"\u003e\u003cb data-path-to-node=\"8,1,2,0\" data-index-in-node=\"0\"\u003eRound Shaft Models Only\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,0,0\"\u003e\u003cb data-path-to-node=\"8,2,0,0\" data-index-in-node=\"0\"\u003eStihl\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,1,0\"\u003eFR130, FR220, FR350, FR450, FR480\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,2,0\"\u003e\u003cb data-path-to-node=\"8,2,2,0\" data-index-in-node=\"0\"\u003eRound Shaft Models Only\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,3,0,0\"\u003e\u003cb data-path-to-node=\"8,3,0,0\" data-index-in-node=\"0\"\u003eStihl\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,3,1,0\"\u003eFS-KM (KombiSystem Attachments)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,3,2,0\"\u003e\u003cb data-path-to-node=\"8,3,2,0\" data-index-in-node=\"0\"\u003eRound Shaft Models Only\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003e\u003c\/b\u003e\u003c\/h3\u003e\n\u003ch3 data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eProduct Specifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003ePart Type:\u003c\/b\u003e Trimmer Working Gear Head \/ Gearbox Assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eHousing Material:\u003c\/b\u003e Die-Cast Aluminum Alloy\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-path-to-node=\"11,2,0\" data-index-in-node=\"0\"\u003eShaft Spline Receiver:\u003c\/b\u003e Round Configuration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,3,0\"\u003e\u003cb data-path-to-node=\"11,3,0\" data-index-in-node=\"0\"\u003eCondition:\u003c\/b\u003e 100% Brand New\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eInterchange Reference Part Number:\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul data-path-to-node=\"13\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,0,0\"\u003e\u003cb data-path-to-node=\"13,0,0\" data-index-in-node=\"0\"\u003eFactory OE Number:\u003c\/b\u003e 4137 640 0100\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"15\"\u003e\u003cb data-path-to-node=\"15\" data-index-in-node=\"0\"\u003e\u003c\/b\u003e\u003c\/h3\u003e\n\u003ch3 data-path-to-node=\"15\"\u003e\u003cb data-path-to-node=\"15\" data-index-in-node=\"0\"\u003ePackage Includes\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul data-path-to-node=\"16\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"16,0,0\"\u003e\u003cb data-path-to-node=\"16,0,0\" data-index-in-node=\"0\"\u003e1 × Premium Gearbox Head Assembly\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"16,1,0\"\u003e\u003cb data-path-to-node=\"16,1,0\" data-index-in-node=\"0\"\u003e1 × Matching Line Trimmer Head\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"18\"\u003e\u003cb data-path-to-node=\"18\" data-index-in-node=\"0\"\u003e\u003c\/b\u003e\u003c\/h3\u003e\n\u003ch3 data-path-to-node=\"18\"\u003e\u003cb data-path-to-node=\"18\" data-index-in-node=\"0\"\u003eImportant Mechanical \u0026amp; Installation Notes\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul data-path-to-node=\"19\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"19,0,0\"\u003e\u003cb data-path-to-node=\"19,0,0\" data-index-in-node=\"0\"\u003eIsolate Power Before Servicing:\u003c\/b\u003e Ensure the engine is completely turned off and the spark plug wire is disconnected before removing the old gear head or installing the replacement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"19,1,0\"\u003e\u003cb data-path-to-node=\"19,1,0\" data-index-in-node=\"0\"\u003eCheck Factory Lubrication:\u003c\/b\u003e While pre-greased during manufacturing, it is highly recommended to verify internal grease levels using a high-quality lithium-based gear grease prior to its initial high-RPM operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"19,2,0\"\u003e\u003cb data-path-to-node=\"19,2,0\" data-index-in-node=\"0\"\u003eSecure Clamp Bolts Evenly:\u003c\/b\u003e When sliding the new gearbox onto the outer shaft housing, tighten the clamping bolts evenly in an alternating sequence to prevent cracking the aluminum collar or stripping the threads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Labworkauto","offers":[{"title":"Default Title","offer_id":48892164178179,"sku":"F8-014806","price":28.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0356\/2589\/4024\/files\/2_242214bb-0470-47e9-ac1f-d12675dfa1b8.jpg?v=1782722553","url":"https:\/\/labworkauto.com\/products\/lawn-mower-trimmer-gear-box-head-cutter-strimmer-grass-replacement-for-stihl-fs36-fs40-fs44-fs55-fs72-fs74-fs75-fs76-weed-eater","provider":"Labworkauto","version":"1.0","type":"link"}