{"product_id":"6j8-w006a-00-maintenance-kit-for-yamaha-30hp-2-stroke-3-cylinder-jlm-marine","title":"6J8-W006A-00 Maintenance Kit for Yamaha 30HP 2-Stroke 3-Cylinder | JLM Marine","description":"\u003ch2\u003e6J8-W006A-00 Maintenance Kit for Yamaha 30HP 2-Stroke 3-Cylinder | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive \u003cstrong\u003emaintenance kit\u003c\/strong\u003e is engineered for \u003cstrong\u003eYamaha 30HP 2-Stroke 3-Cylinder outboard engines\u003c\/strong\u003e manufactured between \u003cstrong\u003e1990 and 2016\u003c\/strong\u003e. It provides all essential components needed for routine service intervals, including water pump parts, thermostats, fuel filtration, and drain gaskets.\u003c\/p\u003e\n\n\u003cp\u003eDesigned as a \u003cstrong\u003edirect replacement for OEM part number 6J8-W006A-00\u003c\/strong\u003e, this kit ensures your engine maintains optimal cooling, fuel delivery, and lubrication performance. Each component meets or exceeds original specifications for reliable operation.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete service package with \u003cstrong\u003eimpeller, gaskets, thermostat, fuel filter, and gear oil pump\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCovers all critical maintenance components in one convenient kit\u003c\/li\u003e\n\u003cli\u003eFits Yamaha 30HP 2-Stroke 3-Cylinder models from 1990 to 2016\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\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\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\u003e6J8-W006A-00\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 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\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\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\u003e30HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1990-2016\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\"\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 Part Number\u003c\/td\u003e\n\u003ctd\u003e6J8-W006A-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e2-Stroke 3-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower\u003c\/td\u003e\n\u003ctd\u003e30HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eYamaha Outboard Maintenance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Type\u003c\/td\u003e\n\u003ctd\u003eComprehensive Service Kit\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\u003eThis maintenance kit includes the following components:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e663-44322-00\u003c\/strong\u003e - Cup, Insert × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90280-03024\u003c\/strong\u003e - Key × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6H4-44352-02\u003c\/strong\u003e - \u003cspan style=\"color:red;\"\u003eImpeller × 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e663-44315-A0\u003c\/strong\u003e - Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e663-44323-00\u003c\/strong\u003e - Plate, Wear × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e663-44324-A0\u003c\/strong\u003e - Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e663-44316-A0\u003c\/strong\u003e - Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90119-08M13\u003c\/strong\u003e - Bolt × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90119-08M34\u003c\/strong\u003e - Bolt × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e61N-24560-00\u003c\/strong\u003e - \u003cspan style=\"color:red;\"\u003eFuel Filter × 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6E5-12411-30\u003c\/strong\u003e - \u003cspan style=\"color:red;\"\u003eThermostat × 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6J8-12414-A0\u003c\/strong\u003e - Thermostat Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90430-08020\u003c\/strong\u003e - Drain Gasket × 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e91490-30025\u003c\/strong\u003e - Cotter Pin × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24OP149\u003c\/strong\u003e - \u003cspan style=\"color:red;\"\u003eGear Oil Pump × 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003eDisconnect the engine and allow it to cool completely before beginning any maintenance work. Gather all necessary tools including screwdrivers, wrenches, and a clean workspace.\u003c\/li\u003e\n\u003cli\u003eRemove the lower unit according to your engine's service manual to access the water pump housing. Carefully detach the water pump cover and set aside the old gaskets and components.\u003c\/li\u003e\n\u003cli\u003eClean the water pump housing thoroughly, removing any debris, old gasket material, or corrosion. Inspect the housing for cracks or damage that may require additional repair.\u003c\/li\u003e\n\u003cli\u003eInstall the new \u003cstrong\u003ewear plate (663-44323-00)\u003c\/strong\u003e into the housing, ensuring proper orientation. Place the new \u003cstrong\u003egasket (663-44315-A0)\u003c\/strong\u003e on top of the wear plate.\u003c\/li\u003e\n\u003cli\u003eInsert the new \u003cstrong\u003eimpeller (6H4-44352-02)\u003c\/strong\u003e into the housing, rotating the blades in the correct direction of engine rotation. Install the \u003cstrong\u003ekey (90280-03024)\u003c\/strong\u003e and \u003cstrong\u003einsert cup (663-44322-00)\u003c\/strong\u003e as specified.\u003c\/li\u003e\n\u003cli\u003eApply the new \u003cstrong\u003egaskets (663-44324-A0 and 663-44316-A0)\u003c\/strong\u003e to the pump cover, then secure the cover using the provided \u003cstrong\u003ebolts (90119-08M13 and 90119-08M34)\u003c\/strong\u003e. Torque bolts to manufacturer specifications in a cross pattern.\u003c\/li\u003e\n\u003cli\u003eReplace all four \u003cstrong\u003edrain gaskets (90430-08020)\u003c\/strong\u003e at their respective locations on the lower unit. Ensure each gasket seats properly to prevent oil leaks.\u003c\/li\u003e\n\u003cli\u003eRemove the old thermostat housing and install the new \u003cstrong\u003ethermostat (6E5-12411-30)\u003c\/strong\u003e with the new \u003cstrong\u003ethermostat gasket (6J8-12414-A0)\u003c\/strong\u003e. Secure the housing and verify proper seating.\u003c\/li\u003e\n\u003cli\u003eReplace the \u003cstrong\u003efuel filter (61N-24560-00)\u003c\/strong\u003e by disconnecting fuel lines, removing the old filter, and installing the new one with proper orientation. Reconnect fuel lines securely.\u003c\/li\u003e\n\u003cli\u003eInstall the \u003cstrong\u003ecotter pin (91490-30025)\u003c\/strong\u003e at the designated location as shown in your service manual. Use the included \u003cstrong\u003egear oil pump (24OP149)\u003c\/strong\u003e to refill the lower unit with fresh gear oil to the proper level.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit onto the engine, ensuring all mounting bolts are torqued to specification. Double-check all connections, gaskets, and fasteners.\u003c\/li\u003e\n\u003cli\u003eStart the engine and check for proper water flow from the telltale indicator, verifying the water pump is functioning correctly. Inspect all work areas for leaks and proper operation.\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 maintenance kit fits my Yamaha outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify that your engine is a Yamaha 30HP 2-Stroke 3-Cylinder model manufactured between 1990 and 2016. Cross-reference your original part number (6J8-W006A-00) with the kit, and use the Yamaha Serial Number Guide linked above to confirm your engine specifications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I perform maintenance using this kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Yamaha recommends water pump service every 100 hours of operation or annually, whichever comes first. The thermostat and fuel filter should be inspected during each service and replaced if showing signs of wear, corrosion, or reduced performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak water flow from the telltale, engine overheating, steam from the engine, or reduced cooling efficiency. If your impeller shows cracked blades, missing pieces, or has become hard and brittle, immediate replacement is necessary.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this kit myself or do I need a marine mechanic?\u003c\/strong\u003e\u003cbr\u003e\nA: While experienced DIY mechanics can perform this maintenance with proper tools and a service manual, professional installation is recommended. Incorrect installation can lead to engine overheating, fuel system issues, or lower unit damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between this aftermarket kit and the OEM version?\u003c\/strong\u003e\u003cbr\u003e\nA: This aftermarket kit is manufactured to meet or exceed OEM specifications using comparable-grade materials. All components are produced in ISO9002-certified facilities and undergo rigorous quality inspections to ensure reliable performance at a more competitive price point than OEM alternatives.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part or an aftermarket replacement?\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":52418549186873,"sku":"25KY486-2","price":65.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KY486-2_a9418c16-82c6-41a7-884d-6a27a40379a4.png?v=1776687040","url":"https:\/\/jlmmarine.com\/es\/products\/6j8-w006a-00-maintenance-kit-for-yamaha-30hp-2-stroke-3-cylinder-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}