{"product_id":"carburetor-set-fits-yamaha-85hp-2-stroke-replaces-688-14301-40-688-14302-40-688-14303-40","title":"Carburetor Set – Fits Yamaha 85HP 2-Stroke (Replaces 688-14301-40, 688-14302-40, 688-14303-40)","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 Set\u003c\/strong\u003e is engineered for Yamaha 3-cylinder 85HP 2-stroke outboard motors, delivering reliable fuel metering across all three positions: top, middle, and lower. Compatible with engine models using part numbers 688-14301\/02\/03, this complete set ensures balanced performance and smooth operation across the full RPM range.\u003c\/p\u003e\n\u003cp\u003eThis aftermarket replacement directly interchanges with OEM part numbers 688-14301-40, 688-14302-40, 688-14303-40 and their respective superseded references 692-14301-36, 692-14302-36, and 692-14303-36.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete 3-carburetor assembly for synchronized fuel delivery\u003c\/li\u003e\n  \u003cli\u003eIncludes gaskets for each carburetor position\u003c\/li\u003e\n  \u003cli\u003eDirect bolt-on fitment for specified Yamaha 85HP 2-stroke models\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\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eSuperseded By\u003c\/th\u003e\n        \u003cth\u003ePosition\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\u003e688-14301-40\u003c\/td\u003e\n        \u003ctd\u003e692-14301-36\u003c\/td\u003e\n        \u003ctd\u003eTop carburetor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e688-14302-40\u003c\/td\u003e\n        \u003ctd\u003e692-14302-36\u003c\/td\u003e\n        \u003ctd\u003eMid carburetor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e688-14303-40\u003c\/td\u003e\n        \u003ctd\u003e692-14303-36\u003c\/td\u003e\n        \u003ctd\u003eDown carburetor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e688-14301-08\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eUP\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e688-14302-08\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eMiddle\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e688-14303-08\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eDown\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 \u0026amp; Model 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 motor 3 cylinder\u003c\/td\u003e\n        \u003ctd\u003e85HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e688-14301\/02\/03\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\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eYamaha 3-cylinder 85HP 2-stroke outboard motors\u003c\/dd\u003e\n  \u003cdt\u003eQuantity\u003c\/dt\u003e\n  \u003cdd\u003e3 carburetors (top, middle, lower)\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003e688-14301\/02\/03-40\u003c\/dd\u003e\n  \u003cdt\u003eIncluded Gaskets\u003c\/dt\u003e\n  \u003cdd\u003eYes, one per carburetor\u003c\/dd\u003e\n  \u003cdt\u003eReplacement Type\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eCarburetor with gasket 3522 × 3\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and close the fuel valve before beginning work.\u003c\/li\u003e\n  \u003cli\u003eRemove the engine cowling and air intake assembly to access the existing carburetors.\u003c\/li\u003e\n  \u003cli\u003eLabel and disconnect fuel lines, linkage rods, and electrical connections from each carburetor.\u003c\/li\u003e\n  \u003cli\u003eUnbolt and remove the old carburetors, noting the position: top (688-14301), middle (688-14302), and lower (688-14303).\u003c\/li\u003e\n  \u003cli\u003eClean mounting surfaces on the intake manifold and ensure no debris enters the ports.\u003c\/li\u003e\n  \u003cli\u003eInstall the new gaskets onto each carburetor position as supplied.\u003c\/li\u003e\n  \u003cli\u003eMount each carburetor in the correct position and torque fasteners to manufacturer specifications.\u003c\/li\u003e\n  \u003cli\u003eReconnect fuel lines, throttle\/choke linkages, and electrical connections in the reverse order of removal.\u003c\/li\u003e\n  \u003cli\u003eOpen the fuel valve and check all connections for leaks before starting the engine.\u003c\/li\u003e\n  \u003cli\u003eStart the engine and allow it to warm up; adjust idle 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\u003csummary\u003eWill this set fit my Yamaha 85HP 2-stroke?\u003c\/summary\u003e\u003cp\u003eYes, if your engine uses OEM part numbers 688-14301\/02\/03-40 or the superseded 692-14301\/02\/03-36. Confirm your engine is a 3-cylinder 2-stroke model before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need to synchronize the carburetors after installation?\u003c\/summary\u003e\u003cp\u003eYes, carburetor synchronization is essential for balanced performance. Use a vacuum gauge or follow your service manual's procedure to ensure all three carburetors open evenly and deliver consistent fuel flow.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre the gaskets pre-installed or separate?\u003c\/summary\u003e\u003cp\u003eEach carburetor comes with its own gasket included in the package. Install a fresh gasket at each mounting position to prevent vacuum leaks.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I identify top, middle, and lower positions?\u003c\/summary\u003e\u003cp\u003eThe top carburetor is 688-14301-40, middle is 688-14302-40, and lower is 688-14303-40. Label your fuel lines and linkages during removal to ensure correct reassembly.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I replace just one carburetor instead of all three?\u003c\/summary\u003e\u003cp\u003eWhile individual replacement is technically possible, replacing all three ensures consistent metering and performance. Mixing old and new units may lead to synchronization issues and uneven power delivery.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs my carburetors need replacement?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include rough idling, poor acceleration, excessive fuel consumption, difficulty starting, or visible fuel leaks. Worn internal components such as jets, needles, or diaphragms often necessitate full replacement.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\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\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\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\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":51025605493051,"sku":"23CA107","price":308.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/12_514dbbc5-5964-4f32-ab6b-554982e52f21.jpg?v=1772928034","url":"https:\/\/seasierra.com\/products\/carburetor-set-fits-yamaha-85hp-2-stroke-replaces-688-14301-40-688-14302-40-688-14303-40","provider":"SeaSierra","version":"1.0","type":"link"}