{"product_id":"carburetor-idle-screw-spring","title":"Universal Carburetor Idle Spring: 50cc QMB139","description":"\u003cp\u003eStop chasing your idle. This \u003cstrong\u003eUniversal Parts Carburetor Idle Screw Spring\u003c\/strong\u003e is the small compression spring that holds your air\/fuel mixture screw in position against engine vibration. When this spring weakens or corrodes, the idle screw creeps out of adjustment, causing stalling, surging, and constant re-tuning. At $1.40 it's one of the easiest fixes on a QMB139-carbureted scooter.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Tension:\u003c\/strong\u003e Engineered to hold screw position under high-RPM vibration without over-tensioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZinc-Plated Finish:\u003c\/strong\u003e Corrosion-resistant coating prevents binding inside the carburetor body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect 10mm Length:\u003c\/strong\u003e Sized specifically for QMB139 and GY6 50cc carburetor idle\/air screw ports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Fits most Chinese 50cc 4-stroke scooter carburetors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 151-199\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e ~10mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Zinc-plated steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Carburetor idle \/ air adjustment screw return spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 50cc 4-stroke (QMB139 \/ GY6)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePopular Models\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeneric GY6 \/ QMB139\u003c\/td\u003e\n\u003ctd\u003eAll 50cc 4-stroke QMB139 carbureted engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBaja\u003c\/td\u003e\n\u003ctd\u003eSC50, BE50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKymco\u003c\/td\u003e\n\u003ctd\u003eAgility 50, People 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTaoTao \/ Bintelli \/ Peace \/ Roketa\u003c\/td\u003e\n\u003ctd\u003eMost 50cc 4-stroke scooter models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGenuine Buddy 50 \/ RoughHouse 50\u003c\/td\u003e\n\u003ctd\u003eQMB139-carbureted variants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Universal Parts","offers":[{"title":"Default Title","offer_id":67964495561025,"sku":"151-199","price":1.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/450143.jpg?v=1792793680","url":"https:\/\/azscooterparts.com\/products\/carburetor-idle-screw-spring","provider":"AZScooterParts","version":"1.0","type":"link"}