{"product_id":"carburetor-cv-18mm-w-accelerator-pump-qmb139","title":"You-All 18mm CVK PD18J Carburetor - 139QMB Ruckus","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eRestore consistent power and throttle response on a compatible 50cc scooter with the You-All 18mm CVK PD18J carburetor. Its mechanical accelerator pump helps reduce hesitation during throttle transitions, while the 18 mm venturi supports steady airflow for daily riding and performance builds.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePD18J CVK-style carburetor\u003c\/li\u003e\n\u003cli\u003eMechanical accelerator pump for crisp throttle response\u003c\/li\u003e\n\u003cli\u003e18 mm intake bore\u003c\/li\u003e\n\u003cli\u003ePre-installed #81 main jet and #33 idle jet\u003c\/li\u003e\n\u003cli\u003e40 mm air-filter mount outside diameter\u003c\/li\u003e\n\u003cli\u003eDirect replacement for compatible 139QMB\/GY6 50cc engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eModel: PD18J\u003c\/li\u003e\n\u003cli\u003eType: CVK carburetor\u003c\/li\u003e\n\u003cli\u003eIntake bore: 18 mm\u003c\/li\u003e\n\u003cli\u003eAir-filter mount outside diameter: 40 mm\u003c\/li\u003e\n\u003cli\u003eMain jet: #81\u003c\/li\u003e\n\u003cli\u003eIdle jet: #33\u003c\/li\u003e\n\u003cli\u003eSKU: 1300-1115\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand or application\u003c\/th\u003e\n\u003cth\u003eCompatible models or notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChicago Scooter Co.\u003c\/td\u003e\n\u003ctd\u003ego., go. Max, Bella 50, Nitro Sport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWolf\u003c\/td\u003e\n\u003ctd\u003eRX-50, Islander, Rugby, Blaze, Lucky, Jet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLance\u003c\/td\u003e\n\u003ctd\u003eCali Classic 50, Cabo 50, PCH 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eRuckus and Metropolitan, select 50cc carbureted models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003e139QMB\/GY6 50cc scooters, ATVs, and quads using a compatible PD18J carburetor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMechanic's note:\u003c\/strong\u003e After installation, leave a small amount of throttle-cable freeplay so the accelerator pump can fully reset between throttle inputs. Verify the carburetor model, intake dimensions, and cable\/choke setup before ordering.\u003c\/p\u003e\u003cp\u003eThis product is intended for off-road use only. This product is not intended for use on public roads or land. This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.\u003c\/p\u003e\u003ch2\u003eProduct Diagrams\u003c\/h2\u003e\u003cul class=\"az-content-resources\"\u003e\n\u003cli\u003e\n\u003ca href=\"\/search?view=az-assembly\u0026amp;q=118\"\u003eQMB139 CARBURETOR\u003c\/a\u003e \u003cspan\u003eCallout 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/search?view=az-assembly\u0026amp;q=34\"\u003eBELLA CLASSIC 50 AIRBOX AND CARBURETOR\u003c\/a\u003e \u003cspan\u003eCallout 5\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/search?view=az-assembly\u0026amp;q=88\"\u003eGO MAX CARBURETOR\u003c\/a\u003e \u003cspan\u003eCallout 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"You-All","offers":[{"title":"Default Title","offer_id":67964620702017,"sku":"1300-1115","price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-9945-0-1300-1115_f68b65c1-5f98-4f4e-b096-43d6729f59ad.jpg?v=1792558009","url":"https:\/\/azscooterparts.com\/products\/carburetor-cv-18mm-w-accelerator-pump-qmb139","provider":"AZScooterParts","version":"1.0","type":"link"}