{"product_id":"quadboss-air-cut-off-valve-kit-for-yamaha-yfm250-yfm350-yfm400-yfm660-part-number-420588","title":"QuadBoss Air Cut-Off Valve Kit for Yamaha YFM250\/YFM350\/YFM400\/YFM660, Part Number 420588","description":"Improperly functioning air cut-off valves can stick open or closed, causing poor running conditions and popping during deceleration. Air Cut-Off Valve Kit includes O-rings, diaphragm, spring and screws necessary to rebuild the air cut-off valve circuit.\n\u003cul\u003e\n  \u003cli\u003eComplete rebuild kit with O-rings, diaphragm, spring, and screws to restore carburetor air cut-off function\u003c\/li\u003e\n  \u003cli\u003eMulti-carb models include components for all carbs; direct OEM replacement for reliable performance\u003c\/li\u003e\n  \u003cli\u003eFixes sticking valves causing poor idle, popping on deceleration, and lean running conditions\u003c\/li\u003e\n  \u003cli\u003eModels with multiple carburetors include components to repair all carburetors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe QuadBoss Air Cut-Off Valve Kit is designed to rebuild the carburetor air cut-off valve circuit on select Yamaha powersports models. It includes the O-rings, diaphragm, spring, and screws necessary to restore air cut-off valve function and address sticking valves that may contribute to poor idle, lean running conditions, or popping during deceleration.\u003c\/p\u003e\u003cp\u003eThis kit is a direct OEM replacement for reliable performance. On models equipped with multiple carburetors, the kit includes components to repair all carburetors. It fits select 2000–2005 Yamaha YFM400 Big Bear 2x4 and 4x4 models and 2001–2005 Yamaha YFM660R Raptor models listed below. Manufacturer part number: 420588. Vendor part number: 420588.\u003c\/p\u003e\u003cp\u003eFitment includes the 2001–2005 Yamaha YFM660R Raptor; 2000–2002 Yamaha YFM400 Big Bear 2x4; and 2000–2002 Yamaha YFM400 Big Bear 4x4. Verify the model and year before ordering.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComplete rebuild kit: Includes O-rings, diaphragm, spring, and screws for rebuilding the carburetor air cut-off valve circuit.\u003c\/li\u003e\n\u003cli\u003eAir cut-off valve restoration: Helps address sticking valves that can cause poor idle, lean running conditions, and popping during deceleration.\u003c\/li\u003e\n\u003cli\u003eMulti-carburetor coverage: Models with multiple carburetors include components to repair all carburetors.\u003c\/li\u003e\n\u003cli\u003eReplacement design: Direct OEM replacement for reliable performance.\u003c\/li\u003e\n\u003cli\u003eFitment: Fits select Yamaha YFM400 Big Bear 2x4, Yamaha YFM400 Big Bear 4x4, and Yamaha YFM660R Raptor models from the listed years.\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 420588.\u003c\/li\u003e\n\u003cli\u003eVendor part number: 420588.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nAir Freight Prohibited: false\u003cbr\u003e\nNot Carb Approved: false\u003cbr\u003e\nLtl Freight Required: false\u003cbr\u003e\nProp 65: Unknown\u003cbr\u003e\nPart Type: powersports\u003cbr\u003e\nEpa: N\/A\u003cbr\u003e\nCarb Acknowledgement Required: false\u003cbr\u003e\nRegular Stock: false\u003cbr\u003e\nUnits Per Sku: 1\u003cbr\u003e\nClearance Item: t\u003cbr\u003e\nFitment:\u003cbr\u003e\n2000 Yamaha YFM400 Big Bear 2x4 Base\u003cbr\u003e\n2000 Yamaha YFM400 Big Bear 4x4 Base\u003cbr\u003e\n2001 Yamaha YFM400 Big Bear 2x4 Base\u003cbr\u003e\n2001 Yamaha YFM400 Big Bear 4x4 Base\u003cbr\u003e\n2001 Yamaha YFM660R Raptor Base\u003cbr\u003e\n2002 Yamaha YFM400 Big Bear 2x4 Base\u003cbr\u003e\n2002 Yamaha YFM400 Big Bear 4x4 Base\u003cbr\u003e\n2002 Yamaha YFM660R Raptor Base\u003cbr\u003e\n2003 Yamaha YFM400 Big Bear 2x4 Base\u003cbr\u003e\n2003 Yamaha YFM400 Big Bear 4x4 Base\u003cbr\u003e\n2003 Yamaha YFM660R Raptor Base\u003cbr\u003e\n2004 Yamaha YFM400 Big Bear 2x4 Base\u003cbr\u003e\n2004 Yamaha YFM400 Big Bear 4x4 Base\u003cbr\u003e\n2004 Yamaha YFM660R Raptor Base\u003cbr\u003e\n2005 Yamaha YFM400 Big Bear 4x4 Base\u003cbr\u003e\n2005 Yamaha YFM660R Raptor Base\u003cbr\u003e\n2006 Yamaha YFM400 Big Bear 4x4 Base\u003cbr\u003e\n2007 Yamaha YFM250 Big Bear Base\u003cbr\u003e\n2007 Yamaha YFM350 Grizzly IRS 4x4 Auto Base\u003cbr\u003e\n2008 Yamaha YFM250 Big Bear Base\u003cbr\u003e\n2008 Yamaha YFM350 Grizzly IRS 4x4 Auto Base\u003cbr\u003e\n2009 Yamaha YFM250 Big Bear Base\u003cbr\u003e\n2009 Yamaha YFM350 Grizzly IRS 4x4 Auto Base\u003cbr\u003e\n2010 Yamaha YFM350 Grizzly IRS 4x4 Auto Base\u003cbr\u003e\n2011 Yamaha YFM350 Grizzly IRS 4x4 Auto Base","brand":"QuadBoss","offers":[{"title":"Default Title","offer_id":68303053062379,"sku":"677885","price":29.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/81cb52dd68307d31892f41b01195f086L.jpg?v=1793253590","url":"https:\/\/ctracingservices.com\/products\/quadboss-air-cut-off-valve-kit-for-yamaha-yfm250-yfm350-yfm400-yfm660-part-number-420588","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}