{"product_id":"moto1988-starter-clutch-kit-for-yamaha-350-400-atvs-one-way-bearing-gear-idler-gasket","title":"MOTO1988 Starter Clutch Kit for Yamaha 350–400 ATVs — One-Way Bearing, Gear Idler \u0026 Gasket","description":"\u003cp\u003e\u003cstrong\u003eMOTO1988 starter clutch kit bundles the one-way bearing, gasket, gear idler, needle bearing and bolts you need to restore reliable starting on compatible Yamaha ATV models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis complete replacement assembly is designed to match OEM fitment (manufacturer part 5KM-15590-00-00, replacement 1UY-15517-01-00) for a range of Yamaha four-wheelers built between 1987 and 2014. The kit includes the starter one-way bearing, gasket, gear idler, needle bearing and six mounting bolts so you get the major service items together for a quicker install. Use it to address slipping starts, unusual starter noise, or to proactively replace worn starting components during an engine service.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Yamaha models and years will this starter kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis kit is engineered to fit many popular Yamaha ATVs, including Big Bear, Kodiak, Moto 4, Raptor and Warrior models across several model years. Confirm compatibility by checking the part numbers and model designations before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBig Bear 350 YFM350FW \/ YFM350U (1990–1998)\u003c\/li\u003e\n  \u003cli\u003eKodiak 400 YFM400FW (1994–1998)\u003c\/li\u003e\n  \u003cli\u003eMoto 4 YFM350ER (1988–1995)\u003c\/li\u003e\n  \u003cli\u003eRaptor 350 YFM350R \/ RSE \/ RSE2 (2005–2013; some 2005–2007 special editions)\u003c\/li\u003e\n  \u003cli\u003eWarrior 350 YFM350X (1987–2004)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will replacing the starter one-way bearing and gear idler help my ATV?\u003c\/h3\u003e\n\u003cp\u003eWorn starter bearings or idler gears commonly cause grinding, free-spinning, or failure to engage the engine during starting. Replacing these components restores the intended engagement between the starter motor and crank, reducing noise and preventing starter motor damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores crisp starter engagement and reduces grinding sounds\u003c\/li\u003e\n  \u003cli\u003ePrevents starter motor overrun and excessive wear\u003c\/li\u003e\n  \u003cli\u003eIncludes gasket and bolts for a proper reseal and secure mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the kit and are the parts OEM-equivalent?\u003c\/h3\u003e\n\u003cp\u003eThe package contains a one-way starter bearing, a gasket, a gear idler, a needle bearing and six bolts, supplying the key items needed for a starter system refresh. The kit lists the manufacturer part number 5KM-15590-00-00 and replacement part 1UY-15517-01-00, intended as a direct-fit aftermarket replacement for those OEM references.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1x starter one-way bearing and 1x needle bearing for rotation support\u003c\/li\u003e\n  \u003cli\u003e1x gear idler to transfer starter drive motion correctly\u003c\/li\u003e\n  \u003cli\u003e1x gasket and 6x bolts for proper sealing and secure installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there installation notes or support options after purchase?\u003c\/h3\u003e\n\u003cp\u003eBefore installing, compare the kit parts and OEM numbers against the parts currently on your ATV to ensure fit. MOTO1988 provides customer support via email and offers a one-year product service period; they recommend reviewing model compatibility, pictures and OEM numbers prior to purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck part numbers and images against your machine before ordering\u003c\/li\u003e\n  \u003cli\u003eUse standard hand tools; follow torque specs in your service manual\u003c\/li\u003e\n  \u003cli\u003eContact MOTO1988 customer support for fitment or after-sale questions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This starter clutch and idler gear kit is aimed at Yamaha ATV owners, home mechanics and professional shops maintaining Big Bear, Kodiak, Moto 4, Raptor or Warrior models from the late 1980s through the 2010s. It’s suitable for riders fixing starter engagement problems, performing preventative maintenance, or rebuilding the starter assembly to restore reliable starting performance.\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 kit replace the OEM part 5KM-15590-00-00?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the kit lists manufacturer part 5KM-15590-00-00 and replacement 1UY-15517-01-00 as the intended OEM-equivalent fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install this kit myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, a competent DIYer with basic tools can install it; follow your service manual torque specs and verify parts before starting.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MOTO1988","offers":[{"title":"Default Title","offer_id":48083075104926,"sku":"B0BYZ2YPXJ","price":57.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/moto1988-starter-clutch-kit-front-packaging.jpg?v=1785823673","url":"https:\/\/northtrailauto.ca\/products\/moto1988-starter-clutch-kit-for-yamaha-350-400-atvs-one-way-bearing-gear-idler-gasket","provider":"North Trail Auto","version":"1.0","type":"link"}