{"product_id":"carburetor-assembly-set-fits-yamaha-90hp-replaces-6h1-14301-04-00-6h1-14302-02-00-6h1-14303-05-00","title":"Carburetor Assembly Set – Fits Yamaha 90HP (Replaces 6H1-14301-04-00, 6H1-14302-02-00, 6H1-14303-05-00)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eCarburetor Assembly Set – Fits Yamaha 90HP (Replaces 6H1-14301-04-00, 6H1-14302-02-00, 6H1-14303-05-00)\u003c\/strong\u003e is designed for Yamaha 90HP 2-stroke outboard engines. The three-piece carburetor set includes top, middle, and bottom assemblies engineered to deliver reliable fuel atomization and throttle response across the complete carburetor bank.\u003c\/p\u003e\n\u003cp\u003eThis aftermarket assembly directly replaces OEM part numbers 6H1-14301-04-00 (top), 6H1-14302-02-00 (middle), and 6H1-14303-05-00 (bottom), offering complete carburetor bank replacement in a single package.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum alloy construction for durability and long-term performance\u003c\/li\u003e\n  \u003cli\u003eLightweight design simplifies installation and handling\u003c\/li\u003e\n  \u003cli\u003eComplete three-carburetor set for full bank replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePosition\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\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eTop\u003c\/td\u003e\n        \u003ctd\u003e6H1-14301-04-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eMiddle\u003c\/td\u003e\n        \u003ctd\u003e6H1-14302-02-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eBottom\u003c\/td\u003e\n        \u003ctd\u003e6H1-14303-05-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine Compatibility\"\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\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eOutboard\u003c\/td\u003e\n        \u003ctd\u003e90HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6H1-14301\/14302\/14303\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eItem Type\u003c\/dt\u003e\n  \u003cdd\u003eOutboard boat carburetor assembly set\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n  \u003cdd\u003eAluminum alloy\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n  \u003cdd\u003eApprox. 1945g \/ 68.6oz\u003c\/dd\u003e\n  \u003cdt\u003eConfiguration\u003c\/dt\u003e\n  \u003cdd\u003e3-piece set (top, middle, bottom)\u003c\/dd\u003e\n  \u003cdt\u003eOE Number\u003c\/dt\u003e\n  \u003cdd\u003e6H1-14301\/14302\/14303\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3× Carburetor\u003c\/strong\u003e (top, middle, bottom assemblies)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and fuel supply before beginning work.\u003c\/li\u003e\n  \u003cli\u003eRemove the engine cowling and locate the existing carburetor bank.\u003c\/li\u003e\n  \u003cli\u003eDisconnect throttle linkages, fuel lines, and choke cables from each carburetor.\u003c\/li\u003e\n  \u003cli\u003eUnbolt the old carburetors from the intake manifold, noting the position of each unit (top, middle, bottom).\u003c\/li\u003e\n  \u003cli\u003eClean the manifold mating surfaces and inspect for cracks or damage.\u003c\/li\u003e\n  \u003cli\u003eInstall new gaskets on each carburetor flange.\u003c\/li\u003e\n  \u003cli\u003eMount the new carburetors in the correct order: top (6H1-14301-04-00), middle (6H1-14302-02-00), bottom (6H1-14303-05-00).\u003c\/li\u003e\n  \u003cli\u003eTorque mounting bolts evenly to manufacturer specifications.\u003c\/li\u003e\n  \u003cli\u003eReconnect fuel lines, throttle linkages, and choke cables, ensuring all connections are secure.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery and open the fuel supply.\u003c\/li\u003e\n  \u003cli\u003ePrime the fuel system and check for leaks before starting the engine.\u003c\/li\u003e\n  \u003cli\u003eStart the engine and adjust idle mixture and synchronization as needed per service manual.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know which carburetor is top, middle, or bottom?\u003c\/summary\u003e\n  \u003cp\u003eThe carburetors are typically labeled or differentiated by part number. Top is 6H1-14301-04-00, middle is 6H1-14302-02-00, and bottom is 6H1-14303-05-00. Refer to your engine's service manual or original carburetor positions for confirmation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I replace just one carburetor instead of all three?\u003c\/summary\u003e\n  \u003cp\u003eWhile individual replacement is possible, replacing the entire set ensures uniform performance and fuel delivery across all cylinders. Mismatched carburetors can cause rough running and poor throttle response.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need to synchronize the carburetors after installation?\u003c\/summary\u003e\n  \u003cp\u003eYes. After installation, synchronize the carburetors to ensure even airflow and fuel mixture across all cylinders. Use a synchronization tool or follow your service manual's procedure for best results.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are signs that my carburetors need replacement?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include hard starting, rough idle, poor acceleration, excessive fuel consumption, black smoke from exhaust, and uneven engine performance. Visible damage, fuel leaks, or severe corrosion also indicate replacement is needed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should carburetors be cleaned or replaced?\u003c\/summary\u003e\n  \u003cp\u003eClean carburetors annually or more frequently if you use ethanol-blended fuel or store your boat for extended periods. Replace carburetors when cleaning no longer resolves performance issues or if internal components are worn or damaged.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWill these carburetors work with ethanol fuel?\u003c\/summary\u003e\n  \u003cp\u003eThese carburetors are compatible with modern marine fuels, including those containing ethanol. However, ethanol can accelerate wear and deposit buildup, so regular maintenance and fuel stabilizer use are recommended.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":51025605525819,"sku":"23CA477","price":215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/12_0438fc9b-4d38-42d3-94ca-3188b8e8e9ab.jpg?v=1772928035","url":"https:\/\/seasierra.com\/products\/carburetor-assembly-set-fits-yamaha-90hp-replaces-6h1-14301-04-00-6h1-14302-02-00-6h1-14303-05-00","provider":"SeaSierra","version":"1.0","type":"link"}