{"product_id":"main-jet-63-for-sha-shb-carbs-for-scooters-mopeds","title":"Main Jet #63 for SHA\/SHB Carbs for Scooters \u0026 Mopeds","description":"\u003ch2\u003eMain Jet #63 for Small Frame Vespa Scooters and Mopeds\u003c\/h2\u003e\u003cp\u003eThis main jet is built for small frame Vespas that run 16mm and 19mm carburetors, along with PHBG carburetors. It handles fuel delivery in the carburetor, which helps the engine perform better. Like other \u003ca href=\"\/collections\/scooter-carburetors\"\u003escooter carburetors \u0026amp; jets\u003c\/a\u003e, it is simple to swap out during routine service. Picking the correct jet size matters if you want your scooter tuned the way you intend.\u003c\/p\u003e\u003ch3\u003eHow Main Jets Work\u003c\/h3\u003e\u003cp\u003eThe main jet regulates how much fuel reaches the engine at higher speeds. Small frame Vespas use two jets: a main jet and an idle jet. Main jets come in sizes from 37 to 88, so choosing the right one is key for adjusting performance and keeping the engine running well.\u003c\/p\u003e\u003ch3\u003eSigns It's Time to Change the Main Jet\u003c\/h3\u003e\u003cp\u003eYou may need to replace the main jet if the scooter starts to hesitate or loses acceleration. Getting the jetting right often takes some trial and error, since it depends on your setup and how you ride. For guidance on jetting procedures and getting the best performance, check the available resources.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e #63\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Main Jet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Small Frame Vespas with 16mm and 19mm SHA\/SHB carbs, and PHBG carbs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eCompatible with:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVespa small frame (16mm and 19mm SHA\/SHB carbs)\u003c\/li\u003e\n\u003cli\u003ePHBG carbs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Check the jet size stamped on your old jet or the size listed for your carburetor. #63 is one size within the 37-88 range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/scooter-carburetors\"\u003eScooter Carburetors \u0026amp; Jets\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"Default Title","offer_id":51138506817593,"sku":"TT-25809","price":3.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/main-jet-63-for-sha-shb-carbs-1.jpg?v=1794375506","url":"https:\/\/www.trendtimes.com\/products\/main-jet-63-for-sha-shb-carbs-for-scooters-mopeds","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}