{"product_id":"goofound-50cc-gy6-carburetor-for-49cc-50cc-scooters-139qmb-139qma-fit-78-main-jet-electric-choke","title":"GOOFOUND 50CC GY6 Carburetor for 49cc-50cc Scooters — 139QMB\/139QMA Fit, #78 Main Jet \u0026 Electric Choke","description":"\u003cstrong\u003eHigh-performance replacement carburetor engineered for 49cc–50cc GY6 4-stroke scooters and mopeds, supplied with an intake manifold and installation hardware.\u003c\/strong\u003e\n\n\u003cp\u003eIf your GY6-powered scooter struggles to start, idles poorly, or needs a reliable replacement part, this GOOFOUND 50CC carburetor is built to restore smooth operation. Designed for compatibility with 139QMB and 139QMA engines, the unit arrives with a #78 main jet, an electric 2-pin choke, and a full accessory kit so you can swap it in without hunting for extra components.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this carburetor improve starting and idling?\u003c\/h3\u003e\n\u003cp\u003eThe GOOFOUND carburetor uses an upgraded #78 main jet and a calibrated air-fuel pathway to deliver a more consistent mixture at low RPMs. The included 2-pin electric choke helps cold starts by enriching the mixture until the engine warms up, which reduces starter strain and uneven idling.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e#78 main jet for optimized fuel flow\u003c\/li\u003e\n  \u003cli\u003eElectric 2-pin choke for easier cold starts\u003c\/li\u003e\n  \u003cli\u003eTuned pilot circuit to stabilize idle\u003c\/li\u003e\n  \u003cli\u003ePre-installed components to minimize tuning needs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my 49cc–50cc GY6 scooter or moped?\u003c\/h3\u003e\n\u003cp\u003eThis carburetor is made to fit most Chinese-manufactured GY6 49cc and 50cc 4-stroke engines, including popular 139QMB and 139QMA platforms. Check the intake inner diameter and mounting pattern of your existing carburetor to confirm fitment before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIntake inner diameter: 18 mm; outer diameter: 40 mm\u003c\/li\u003e\n  \u003cli\u003eCompatible with GY6 139QMB and 139QMA engines\u003c\/li\u003e\n  \u003cli\u003eTypical fit for many 49cc–50cc scooters and mopeds\u003c\/li\u003e\n  \u003cli\u003eVerify physical measurements and plug type before installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the package and what tools will I need?\u003c\/h3\u003e\n\u003cp\u003eThe kit includes the carburetor, an intake manifold, a spark plug, a fuel filter, and two gaskets so you have the core parts needed for replacement. Basic hand tools and a few minutes of preparation—like labeling hoses and photographing the original setup—will make installation straightforward.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: 1 carburetor, 1 intake manifold, 1 spark plug, 1 fuel filter, 2 gaskets\u003c\/li\u003e\n  \u003cli\u003eMain jet size provided: #78\u003c\/li\u003e\n  \u003cli\u003eRecommended: socket set, screwdrivers, pliers, and hose clamps\u003c\/li\u003e\n  \u003cli\u003eTip: photograph and label vacuum\/fuel lines before removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow simple is installation and are there tuning tips?\u003c\/h3\u003e\n\u003cp\u003eInstallation is designed to be plug-and-play for many GY6-based scooters, with a direct-fit intake and electric choke connector. After mounting, verify choke operation, check for vacuum leaks at the manifold and gaskets, and make minor throttle or idle adjustments as needed for optimal performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlug-and-play electric choke connector for quick hookup\u003c\/li\u003e\n  \u003cli\u003eUse supplied gaskets to prevent intake leaks\u003c\/li\u003e\n  \u003cli\u003eInspect and tighten hose clamps after test run\u003c\/li\u003e\n  \u003cli\u003eAdjust idle and air\/fuel mixture per manufacturer guidance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Riders, mechanics, and DIY scooter owners who need a dependable replacement carburetor for 49cc–50cc GY6 scooters and mopeds will appreciate this complete GOOFOUND kit. It’s suited for anyone replacing a worn or damaged carburetor, upgrading a poorly performing unit, or assembling a simple tune-up using parts that match common GY6 specifications. Confirm engine compatibility and measurements before ordering, and contact GOOFOUND support if you need help identifying the correct model.\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: Is this carburetor compatible with 139QMB engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s designed to fit GY6 139QMB and 139QMA 49cc–50cc 4-stroke engines, but confirm intake diameter and mounting pattern before buying.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include everything needed for installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The package contains the carburetor, intake manifold, spark plug, fuel filter, and two gaskets—basic tools are still required for installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GOOFOUND","offers":[{"title":"Default Title","offer_id":48086215819422,"sku":"B0DFWY2D7H","price":42.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/goofound-carburetor-front-view.jpg?v=1785890074","url":"https:\/\/northtrailauto.ca\/products\/goofound-50cc-gy6-carburetor-for-49cc-50cc-scooters-139qmb-139qma-fit-78-main-jet-electric-choke","provider":"North Trail Auto","version":"1.0","type":"link"}