{"product_id":"carburetor-rebuild-kit-fits-yamaha-40-50-hp-2-stroke-replaces-6h4-w0093-04-00","title":"Carburetor Rebuild Kit – Fits Yamaha 40-50 HP 2-Stroke (Replaces 6H4-W0093-04-00)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\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\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\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 comprehensive \u003cstrong\u003eCarburetor Rebuild Kit – Fits Yamaha 40-50 HP 2-Stroke Outboards\u003c\/strong\u003e contains all the necessary components to service all three carburetors on compatible Yamaha 2-Stroke 40 HP and 50 HP outboard engines manufactured between 1989 and 2009.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Yamaha OEM parts 6H4-W0093-03-00 and 6H4-W0093-04-00, as well as Sierra 18-7768 and Mallory 9-37503.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for direct OEM-equivalent fit and function.\u003c\/li\u003e\n\u003cli\u003eIncludes all gaskets, O-rings, floats, and needle valves for a complete 3-carburetor overhaul.\u003c\/li\u003e\n\u003cli\u003eRestores proper fuel delivery and engine performance.\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 suppliers.\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\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\u003e6H4-W0093-04-00\u003c\/td\u003e\n        \u003ctd\u003eCurrent OEM Part\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6H4-W0093-03-00\u003c\/td\u003e\n        \u003ctd\u003eSuperseded by 6H4-W0093-04-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-7768\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory\u003c\/td\u003e\n        \u003ctd\u003e9-37503\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\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 and year in the table below to ensure proper fitment.\u003c\/p\u003e\n\u003cp\u003eThis carburetor rebuild kit is confirmed to fit the following Yamaha outboard models:\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\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\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\u003e40HP 2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e40\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1989–2009\u003c\/td\u003e\n        \u003ctd\u003e6H4-W0093-04-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 6H4-W0093-03-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e50HP 2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e50\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1989–2006\u003c\/td\u003e\n        \u003ctd\u003e6H4-W0093-04-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 6H4-W0093-03-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eP40\u003c\/td\u003e\n        \u003ctd\u003e40\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1989–2009\u003c\/td\u003e\n        \u003ctd\u003e6H4-W0093-04-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 6H4-W0093-03-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eC40\u003c\/td\u003e\n        \u003ctd\u003e40\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1989–2009\u003c\/td\u003e\n        \u003ctd\u003e6H4-W0093-04-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 6H4-W0093-03-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eP50\u003c\/td\u003e\n        \u003ctd\u003e50\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1989–2006\u003c\/td\u003e\n        \u003ctd\u003e6H4-W0093-04-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 6H4-W0093-03-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eC50\u003c\/td\u003e\n        \u003ctd\u003e50\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1989–2006\u003c\/td\u003e\n        \u003ctd\u003e6H4-W0093-04-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 6H4-W0093-03-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003ePRO50\u003c\/td\u003e\n        \u003ctd\u003e50\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1989–2006\u003c\/td\u003e\n        \u003ctd\u003e6H4-W0093-04-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 6H4-W0093-03-00\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\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eCarburetor Repair Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eKit Contents\u003c\/dt\u003e\n\u003cdd\u003eIncludes float assembly, gaskets, O-rings, needle valve assembly, clips, pins, and screws for three carburetors\u003c\/dd\u003e\n  \u003cdt\u003ePackage Dimensions\u003c\/dt\u003e\n\u003cdd\u003e18 × 15 × 3 cm\u003c\/dd\u003e\n  \u003cdt\u003ePackage Weight\u003c\/dt\u003e\n\u003cdd\u003e40 g (0.09 lb)\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cp\u003eThis kit includes all components required to service \u003cspan style=\"color:#d0021b;\"\u003eall 3 (THREE) carburetors\u003c\/span\u003e on compatible engines.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Gasket (6H4-14198-09-00)\u003c\/li\u003e\n\u003cli\u003e3 x Cap (679-14966-00-00)\u003c\/li\u003e\n\u003cli\u003e3 x Needle Valve Assembly (6H3-14590-01-00)\u003c\/li\u003e\n\u003cli\u003e3 x Clip (633-14159-00-00)\u003c\/li\u003e\n\u003cli\u003e3 x Pin, Float (676-14186-00-00)\u003c\/li\u003e\n\u003cli\u003e3 x Float (6G1-14985-00-00)\u003c\/li\u003e\n\u003cli\u003e3 x Pin, Float Arm (688-14548-00-00)\u003c\/li\u003e\n\u003cli\u003e3 x O-Ring (6G1-14984-00-00)\u003c\/li\u003e\n\u003cli\u003e3 x Screw, With Washer (97980-04114-00)\u003c\/li\u003e\n\u003cli\u003e3 x O-Ring (93210-04230-00)\u003c\/li\u003e\n\u003cli\u003e3 x Gasket (663-14126-00-00)\u003c\/li\u003e\n\u003cli\u003e3 x Gasket (688-14126-00-00)\u003c\/li\u003e\n\u003cli\u003e3 x Screw, Pilot (692-14923-00-00)\u003c\/li\u003e\n\u003cli\u003e3 x O-Ring (93210-15M52-00)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eShut off the fuel supply and safely disconnect the fuel line from the carburetors.\u003c\/li\u003e\n\u003cli\u003eCarefully remove the carburetors from the engine intake manifold. Note the linkage and hose connections.\u003c\/li\u003e\n\u003cli\u003eDisassemble one carburetor at a time to avoid mixing parts. Lay out all components in order.\u003c\/li\u003e\n\u003cli\u003eThoroughly clean all metal parts with a quality carburetor cleaner. Do not soak rubber or plastic parts.\u003c\/li\u003e\n\u003cli\u003eCarefully inspect all non-replaceable components for wear or damage.\u003c\/li\u003e\n\u003cli\u003eUsing the new kit components, replace the old gaskets, seals, O-rings, needle valve, and float assembly.\u003c\/li\u003e\n\u003cli\u003eEnsure the float height is set to your engine's service manual specifications before closing the bowl.\u003c\/li\u003e\n\u003cli\u003eReassemble the carburetor, ensuring all screws are torqued correctly and moving parts operate smoothly.\u003c\/li\u003e\n\u003cli\u003eRepeat the process for the remaining carburetors.\u003c\/li\u003e\n\u003cli\u003eReinstall the carburetors onto the engine, reconnecting all linkages and fuel lines securely.\u003c\/li\u003e\n\u003cli\u003ePrime the fuel system and check for leaks before starting the engine. Adjust idle mixture and speed as needed.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this kit fits my engine?\u003c\/summary\u003e\u003cp\u003eThis kit is designed for Yamaha 40-50 HP 2-Stroke outboards made from 1989–2009. The most reliable way to confirm fitment is to check the part number on your existing carburetors or consult your service manual. Cross-reference your part numbers with those in our Part Number Matrix.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit rebuild all carburetors on my engine?\u003c\/summary\u003e\u003cp\u003eYes, this is a complete kit containing all the necessary parts to rebuild all three carburetors on the specified Yamaha 3-cylinder engines.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a carburetor that needs a rebuild?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include difficulty starting, rough idling, stalling at low speeds, engine hesitation or sputtering on acceleration, black smoke from the exhaust, and fuel leaks from the carburetor body.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I rebuild my outboard's carburetors?\u003c\/summary\u003e\u003cp\u003eRebuild intervals depend on usage, fuel quality, and storage habits. It is good practice to rebuild every 2-3 years for preventative maintenance, or immediately if you notice performance issues, especially after long-term storage or if fuel was left in the bowls.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat's the difference between this kit and the OEM version?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket kit engineered to meet or exceed OEM specifications for fit, form, and function. The primary difference is that it is not produced by the original engine manufacturer, allowing for a more competitive price point without sacrificing quality.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs professional installation necessary?\u003c\/summary\u003e\u003cp\u003eWhile a skilled DIY mechanic can perform the rebuild, professional installation is recommended. Carburetor synchronization and fine-tuning are often required after a rebuild to ensure optimal engine performance and safety.\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 vs 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\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723972579643,"sku":"W4-DM2X-1505","price":19.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/W4-DM2X-1505.png?v=1763038863","url":"https:\/\/seasierra.com\/products\/carburetor-rebuild-kit-fits-yamaha-40-50-hp-2-stroke-replaces-6h4-w0093-04-00","provider":"SeaSierra","version":"1.0","type":"link"}