{"product_id":"812647t1-carburetor-for-mercury-mariner","title":"812647T1 Carburetor for Mercury Mariner | JLM Marine","description":"\u003ch2\u003eCarburetor for Mercury Mariner 2-Stroke 4HP 5HP Outboard Engines\u003c\/h2\u003e\n\n\u003cp\u003eThis high-quality aftermarket carburetor is designed to fit \u003cstrong\u003eMercury Mariner 2-stroke outboard engines rated at 4HP and 5HP\u003c\/strong\u003e. Engineered to meet OEM specifications, this carburetor ensures reliable fuel delivery and optimal engine performance for your outboard motor.\u003c\/p\u003e\n\n\u003cp\u003eThis carburetor directly replaces OEM part numbers \u003cstrong\u003e812647T1\u003c\/strong\u003e, \u003cstrong\u003e3303-812647T1\u003c\/strong\u003e, and \u003cstrong\u003e3303-812648T\u003c\/strong\u003e, providing a cost-effective alternative to factory parts without sacrificing quality or reliability.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete carburetor assembly ready for installation\u003c\/li\u003e\n\u003cli\u003eCompatible with 2-stroke gasoline engines\u003c\/li\u003e\n\u003cli\u003ePrecision-manufactured for accurate fuel-air mixture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e812647T1\u003c\/td\u003e\n\u003ctd\u003eOEM Carburetor Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e3303-812647T1\u003c\/td\u003e\n\u003ctd\u003eOEM Reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e3303-812648T\u003c\/td\u003e\n\u003ctd\u003eOEM Reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e4HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e3303-812647T1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e5HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e3303-812647T1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003e100% Brand New\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Position\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Power\u003c\/td\u003e\n\u003ctd\u003e4HP \/ 5HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e812647T1, 3303-812647T1, 3303-812648T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eYour purchase includes:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 x Outboard Engine Carburetor\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the fuel line\u003c\/strong\u003e from the old carburetor and ensure the engine is completely cool before beginning work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove the engine cover\u003c\/strong\u003e to access the carburetor assembly. Take note of all linkage positions and orientations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the throttle and choke linkages\u003c\/strong\u003e from the old carburetor carefully to avoid bending or damaging them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnbolt the old carburetor\u003c\/strong\u003e from the intake manifold using the appropriate wrench or socket. Keep all mounting hardware for reuse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean the mounting surface\u003c\/strong\u003e on the intake manifold thoroughly, removing any old gasket material or debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the new gasket\u003c\/strong\u003e (if included or using a new one) on the intake manifold surface to ensure a proper seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the new carburetor\u003c\/strong\u003e onto the intake manifold and hand-tighten the mounting bolts initially.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque the mounting bolts\u003c\/strong\u003e to manufacturer specifications in a criss-cross pattern to ensure even seating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect the throttle and choke linkages\u003c\/strong\u003e in their original positions, ensuring smooth operation without binding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAttach the fuel line\u003c\/strong\u003e securely to the carburetor inlet and check for proper connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrime the fuel system\u003c\/strong\u003e by squeezing the primer bulb until firm, then check for any fuel leaks around connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart the engine and adjust idle settings\u003c\/strong\u003e as needed for smooth operation. Reinstall the engine cover once testing is complete.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this carburetor fits my Mercury Mariner engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify your engine is a 2-stroke 4HP or 5HP Mercury Mariner outboard. Cross-reference your existing carburetor's part number with 812647T1, 3303-812647T1, or 3303-812648T. You can also use the Mercury serial number guide and parts diagrams linked above to confirm compatibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my carburetor needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include difficulty starting, rough idling, poor acceleration, black smoke from the exhaust, excessive fuel consumption, or engine stalling. If cleaning the carburetor doesn't resolve these issues, replacement is recommended.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace or service my carburetor?\u003c\/strong\u003e\u003cbr\u003e\nA: Carburetors don't have a fixed replacement interval. Regular cleaning and maintenance after every 50-100 hours of operation can extend lifespan. Replace when cleaning no longer restores performance or if internal components are damaged or corroded.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will this work exactly like my original Mercury carburetor?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this aftermarket carburetor is manufactured to OEM specifications and designed to deliver equivalent performance. It uses comparable-grade materials and is tested to ensure proper fuel delivery and engine operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to adjust the carburetor after installation?\u003c\/strong\u003e\u003cbr\u003e\nA: Minor idle and mixture adjustments may be necessary after installation to optimize performance for your specific engine. Refer to your engine's service manual for proper adjustment procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part or aftermarket?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":49581569016121,"sku":"19CA48T","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Carburetor_for_Mercury_4HP_5HP__812648T_-_JLM_MARINE-8288076.jpg?v=1755400122","url":"https:\/\/jlmmarine.com\/products\/812647t1-carburetor-for-mercury-mariner","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}