{"product_id":"youxmoto-spindle-assembly-for-46-mower-decks-replaces-mtd-618-06989-918-06989-174-2mm-height-159mm-pulley","title":"Youxmoto Spindle Assembly for 46\" Mower Decks — Replaces MTD 618-06989\/918-06989, 174.2mm Height \u0026 159mm Pulley","description":"\u003cp\u003e\u003cstrong\u003eYouxmoto 618-06989 \/ 918-06989 is a direct-fit spindle assembly engineered to replace worn spindles on 46\" lawn mower decks used by Troy-Bilt, MTD and related models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen a mower deck starts producing uneven cuts, loud bearing noise, or excessive vibration, the spindle assembly is often the root cause. This replacement spindle is dimensioned and drilled to match factory specifications—174.2 mm overall height and a 159 mm pulley outer diameter—so it restores deck geometry and blade alignment without machine modification. It’s sold as a complete assembly for straightforward swap-in service on a long list of compatible model numbers.\u003c\/p\u003e\n\n\u003ch3\u003eWhich mower models will this spindle assembly fit?\u003c\/h3\u003e\n\u003cp\u003eThe Youxmoto spindle is made to match MTD and Troy-Bilt 46\" deck applications across many production variants. It lists compatibility by reference numbers and common model families so you can confirm fit by cross-referencing your machine’s part number or service manual.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces MTD part numbers 618-06989 and 918-06989.\u003c\/li\u003e\n  \u003cli\u003eFits MTD models such as T1500, T1600, T1700, T1900, T2600, T2700, LT4600 and CLT46CVT variants.\u003c\/li\u003e\n  \u003cli\u003eCompatible with Troy-Bilt and Horse series bronco\/horse 46 models, including TB46 and Bronco 46 variants.\u003c\/li\u003e\n  \u003cli\u003eMatch by service code or stamped part number for final confirmation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do the spindle’s measurements matter when replacing a worn unit?\u003c\/h3\u003e\n\u003cp\u003eCorrect dimensions ensure the blade sits at the original radius and the belt alignment remains true. This Youxmoto assembly duplicates critical sizes so pulley alignment, blade height and belt tracking behave like new parts did from the factory.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOverall height: 174.2 mm (6 6\/7 inches) to preserve deck clearance and blade geometry.\u003c\/li\u003e\n  \u003cli\u003ePulley outer diameter: 159 mm (6 1\/4 inches) for correct belt wrap and tension.\u003c\/li\u003e\n  \u003cli\u003eCenter mounting: 6-point star center hole matching the OEM interface for secure fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and service benefits can I expect after installing this spindle?\u003c\/h3\u003e\n\u003cp\u003eReplacing a failing spindle typically reduces vibration, restores a level cut, and stops bearing noise. Because the assembly arrives preassembled, it reduces installation steps and lets you get the deck back into service faster.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces blade wobble and returns an even, professionally trimmed swath.\u003c\/li\u003e\n  \u003cli\u003eStops grinding or rumbling caused by worn bearings or shaft play.\u003c\/li\u003e\n  \u003cli\u003ePreassembled unit simplifies installation—no separate bearing or housing press-fit required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there installation notes or compatibility checks I should perform?\u003c\/h3\u003e\n\u003cp\u003eBefore installing, compare your original spindle’s overall height, pulley diameter and mounting hole pattern to the replacement. Also inspect blade bolts, belt condition and deck spindle mounts for wear to avoid premature failure of the new unit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify part numbers 618-06989 or 918-06989 on the old spindle or mower parts diagram.\u003c\/li\u003e\n  \u003cli\u003eCompare the 174.2 mm height and 159 mm pulley diameter to your original spindle.\u003c\/li\u003e\n  \u003cli\u003eReplace worn belts and blades at the same time for best cutting results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This Youxmoto spindle assembly is aimed at owners and technicians of 46\" deck lawn tractors from MTD, Troy-Bilt and related brands who need a direct replacement for a failing spindle. It suits DIYers comfortable with basic deck removal and bolt torque work, as well as repair shops that require a dependable OEM-equivalent assembly to restore smooth, level cutting performance without modifying the deck.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this spindle replace part number 618-06989?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — this Youxmoto assembly is a direct replacement for MTD part 618-06989 and compatible variants.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will the pulley fit my existing belt?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The pulley OD is 159 mm (6 1\/4\"); check belt wrap and tension against your original pulley for compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Youxmoto","offers":[{"title":"Default Title","offer_id":56799276597588,"sku":"B09NQ4LZKX","price":92.24,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/youxmoto-spindle-front-assembly.jpg?v=1786730441","url":"https:\/\/gardenluxe.co.uk\/products\/youxmoto-spindle-assembly-for-46-mower-decks-replaces-mtd-618-06989-918-06989-174-2mm-height-159mm-pulley","provider":"Gardenluxe Uk","version":"1.0","type":"link"}