{"product_id":"688-14301-02-03-40-carburetor-set-for-yamaha-85hp-2-stroke-jlm-marine","title":"688-14301\/02\/03-40 Carburetor Set for Yamaha 85HP 2-Stroke | JLM Marine","description":"\u003ch2\u003eCarburetor Set for Yamaha 85HP 2-Stroke Outboard Motors\u003c\/h2\u003e\n\n\u003cp\u003eThis carburetor set is engineered for Yamaha 3-cylinder 85HP 2-stroke outboard engines. It includes three complete carburetors with gaskets, providing a comprehensive fuel delivery solution for top, middle, and bottom positions on your powerhead.\u003c\/p\u003e\n\n\u003cp\u003eDirectly replaces OEM part numbers 688-14301-40, 688-14302-40, and 688-14303-40, along with their alternates 692-14301-36, 692-14302-36, and 692-14303-36. Also compatible with 688-14301-08 (top), 688-14302-08 (middle), and 688-14303-08 (bottom).\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete set of three carburetors with mounting gaskets\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered for consistent fuel metering across all cylinders\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on replacement for Yamaha 3-cylinder 85HP 2-stroke engines\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 options.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003ePosition\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\u003e688-14301-40\u003c\/td\u003e\n\u003ctd\u003eTop\u003c\/td\u003e\n\u003ctd\u003ePrimary OEM number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e692-14301-36\u003c\/td\u003e\n\u003ctd\u003eTop\u003c\/td\u003e\n\u003ctd\u003eAlternate OEM number\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\u003eTop (UP)\u003c\/td\u003e\n\u003ctd\u003eCompatible variant\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\u003eMiddle\u003c\/td\u003e\n\u003ctd\u003ePrimary OEM number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e692-14302-36\u003c\/td\u003e\n\u003ctd\u003eMiddle\u003c\/td\u003e\n\u003ctd\u003eAlternate OEM number\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\u003eMiddle\u003c\/td\u003e\n\u003ctd\u003eCompatible variant\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\u003eBottom\u003c\/td\u003e\n\u003ctd\u003ePrimary OEM number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e692-14303-36\u003c\/td\u003e\n\u003ctd\u003eBottom\u003c\/td\u003e\n\u003ctd\u003eAlternate OEM number\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\u003eBottom (Down)\u003c\/td\u003e\n\u003ctd\u003eCompatible variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-serial-number-guide-2025\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-parts-diagrams-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\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\u003e3-cylinder outboard motor\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 Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\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\u003eOEM Number\u003c\/td\u003e\n\u003ctd\u003e688-14301\/02\/03-40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eYamaha 3-cylinder 85HP 2-stroke outboard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e3 carburetors (top, middle, bottom)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Gaskets\u003c\/td\u003e\n\u003ctd\u003eYes (3 sets)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eAftermarket replacement\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\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eCarburetor with gasket (Part #3522) × 3 pieces\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eTop carburetor (replaces 688-14301-40 \/ 692-14301-36)\u003c\/li\u003e\n\u003cli\u003eMiddle carburetor (replaces 688-14302-40 \/ 692-14302-36)\u003c\/li\u003e\n\u003cli\u003eBottom carburetor (replaces 688-14303-40 \/ 692-14303-36)\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 battery\u003c\/strong\u003e and remove the engine cowling to access the carburetor assembly. Ensure the fuel line is shut off to prevent spillage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLabel and disconnect\u003c\/strong\u003e all fuel lines, linkage rods, and electrical connections from each carburetor. Take photos for reference during reassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove the mounting bolts\u003c\/strong\u003e securing each carburetor to the intake manifold. Carefully extract the old carburetors from top, middle, and bottom positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean the intake manifold surfaces\u003c\/strong\u003e thoroughly, removing all old gasket material and debris. Inspect for cracks or warping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall new gaskets\u003c\/strong\u003e onto the intake ports, ensuring proper alignment with bolt holes. Do not reuse old gaskets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the top carburetor\u003c\/strong\u003e (688-14301-40 replacement) onto the upper intake port. Hand-tighten mounting bolts first.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the middle carburetor\u003c\/strong\u003e (688-14302-40 replacement) onto the center intake port using the same method.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount the bottom carburetor\u003c\/strong\u003e (688-14303-40 replacement) onto the lower intake port. Ensure all three units are properly seated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque all mounting bolts\u003c\/strong\u003e to manufacturer specifications in a criss-cross pattern to ensure even gasket compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect fuel lines, linkage rods, and electrical connections\u003c\/strong\u003e to all three carburetors, referring to your reference photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurn on the fuel supply\u003c\/strong\u003e and inspect for leaks at all connection points. Address any leaks before proceeding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinstall the engine cowling, reconnect the battery,\u003c\/strong\u003e and perform a test start. 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\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this carburetor set fits my Yamaha engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify that your engine is a Yamaha 3-cylinder 85HP 2-stroke model. Cross-reference your existing carburetor part numbers with those listed in our Part Number Cross-Reference table (688-14301\/02\/03 series). If your current carburetors match any of the OEM numbers listed, this set will fit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the differences between this aftermarket set and OEM Yamaha carburetors?\u003c\/strong\u003e\u003cbr\u003e\nA: This aftermarket set is manufactured to OEM specifications using comparable materials and quality standards. While not produced by Yamaha, it provides equivalent performance and fitment at a more competitive price point. All units are inspected for quality before shipment.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace or rebuild my carburetors?\u003c\/strong\u003e\u003cbr\u003e\nA: Carburetor lifespan depends on fuel quality, usage, and maintenance. If you experience hard starting, rough idle, poor acceleration, or uneven cylinder performance, replacement or rebuild may be needed. Regular cleaning and using fresh fuel with stabilizer can extend carburetor life significantly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to synchronize the three carburetors after installation?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, proper synchronization is critical for smooth engine operation and balanced cylinder performance. After installation, use a carburetor synchronization tool or vacuum gauges to ensure all three carburetors are delivering equal fuel\/air mixture. Consult your Yamaha service manual for the correct procedure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are common signs that my carburetors are failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Symptoms include difficult starting (especially when cold), rough or inconsistent idle, hesitation during acceleration, black smoke from exhaust, excessive fuel consumption, or one cylinder running cooler than others. Carburetor issues often stem from clogged jets, worn gaskets, or varnish buildup from old fuel.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM product 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":51924871938361,"sku":"23CA107","price":308.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_82b1d154-4e65-436e-897a-d43bec9955b5.jpg?v=1770528598","url":"https:\/\/jlmmarine.com\/es\/products\/688-14301-02-03-40-carburetor-set-for-yamaha-85hp-2-stroke-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}