{"title":"Yamaha 2-Stroke 75-300HP Outboard","description":"\u003csection id=\"hero\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003cp\u003eThis landing page is for Yamaha 2-Stroke 75–300HP outboard engines. Use it to find compatible parts and service information, including maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse our main Yamaha collection. Scroll to the bottom of this page to start browsing parts for this engine, and on the collection page use the “Filter \u0026amp; Sort” controls to narrow results by horsepower, year range, and part category\/section.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block; padding:10px 16px; background:#1a73e8; color:#fff; text-decoration:none; border-radius:4px;\"\u003eBrowse All Yamaha Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 75–300HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the model\/serial plate on the transom bracket (port side) or swivel bracket. The same data is often repeated on a sticker under the engine cowling.\u003c\/li\u003e\n    \u003cli\u003eRead the full model code and suffix. For Yamaha 2‑Stroke models, letters typically indicate shaft length (e.g., L=20, X=25), control\/trim configuration, and a year\/region suffix.\u003c\/li\u003e\n    \u003cli\u003eConfirm platform by cylinder count and induction: 75–90HP are commonly inline‑3, 115–130HP inline‑4, and 150–300HP V6. Some V6 models used direct fuel injection (e.g., HPDI) while others are carbureted.\u003c\/li\u003e\n    \u003cli\u003eNote gearcase size and shaft length when ordering water pump kits, seals, and propellers, as these parts are gearcase‑specific.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"platforms\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eInline‑3 (75–90HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInline‑3 carbureted 2‑Stroke outboards (typical for 75\/85\/90HP).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e75\/85\/90HP 2‑Stroke family (various shaft lengths and control types).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLightweight, simple maintenance, strong low‑to‑midrange torque.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWater pump kits and propellers depend on gearcase size and shaft length; ignition and carburetor parts vary by model code.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eInline‑4 (115–130HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin-top:12px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInline‑4 carbureted 2‑Stroke outboards (115\/130HP class).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e115\/130HP 2‑Stroke family (various shaft lengths and control types).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eBalanced weight, broad torque curve, straightforward service routine.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCarb kits, reeds, and ignition components differ by year; gearcase parts (seals\/impellers) depend on housing diameter.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV6 (150–300HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin-top:12px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eV6 2‑Stroke outboards (carbureted, EFI, or direct‑injected variants such as HPDI).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e150\/175\/200\/225\/250\/300HP 2‑Stroke V6 families across multiple year ranges.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eHigh output with strong mid‑to‑top‑end performance; proven offshore durability when maintained.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel system parts vary widely: carb\/EFI\/HPDI components are not interchangeable. Water pump, anodes, and gearcase seals depend on specific gearcase and shaft length.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for Yamaha 2‑Stroke outboards. Always follow the official service manual for your exact model and operating conditions.\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eChange more often for heavy use or if water intrusion is suspected. Inspect magnet for metal.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\"\u003eYamaha Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect every 50 hrs; replace 100–200 hrs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGap and heat range vary by model; replace if fouled or worn.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eReplace sooner if contaminated fuel is suspected. HPDI\/EFI systems may have additional fine filters.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect annually; replace 2–3 years (or sooner in sandy\/silty water)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMaintain proper cooling and tell‑tale stream; kit selection depends on gearcase.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-water-pump-repair-kits\"\u003eYamaha Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAnodes (sacrificial)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect 50 hrs; replace when 50% consumed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eUse correct alloy for your water (salt\/brackish\/fresh). Keep electrical bonding intact.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-anodes\"\u003eYamaha Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eOil injection system check (2‑Stroke)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify tank screens\/filters, pump operation, and delivery lines. Do not run oil‑starved.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-service-maintenance-kits\"\u003eYamaha Service \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLower unit seals (inspection)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect at each gear oil change\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMilky gear oil indicates water intrusion; reseal as needed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-lower-unit-seal-kits\"\u003eYamaha Lower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePropeller and hardware check\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 50–100 hrs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect hub for damage; remove prop to clear fishing line and grease the shaft.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-propellers\"\u003eYamaha Propellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service – \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-service-maintenance-kits\"\u003eYamaha Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System – \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-water-pump-repair-kits\"\u003eYamaha Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eLower Unit Seals – \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-lower-unit-seal-kits\"\u003eYamaha Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection – \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-anodes\"\u003eYamaha Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Spark – \u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System – \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion – \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-propellers\"\u003eYamaha Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWeak tell‑tale stream \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect intake screens, thermostat, and impeller condition. Verify water pump housing is not scored.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWater pump kit, thermostat, intake screen, anodes (for corrosion‑related blockages)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck fuel quality, filters, spark plugs, and compression. For HPDI\/EFI, verify high‑pressure filters and injector condition.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel filters, spark plugs, fuel pump, injector service, reed valves (where applicable)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfirm primer bulb firmness, choke\/enrichment operation, and carb synchronization (carb models).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSpark plugs, fuel filter, carb kits, enrichment valve\/solenoid, fuel lines\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eExcessive smoke (2‑Stroke)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify oil injection setting and line integrity; ensure correct 2‑Stroke oil and no fuel pooling in intake.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eOil injection filter\/lines, reed valves, carb kits\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGearcase noise \/ metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck prop shaft for fishing line, verify proper gear oil level, inspect for water intrusion.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLower unit seal kit, carrier seals, shims\/bearings (as specified by service manual)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable across different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eNot always. 2‑Stroke families span inline‑3, inline‑4, and V6 platforms with carb, EFI, or direct‑injection fuel systems. Many components (ignition, fuel, gearcase, gaskets) are model‑year and platform specific. Always confirm by full model code and serial number.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the impeller?\u003c\/summary\u003e\n    \u003cp\u003eInspect annually and replace every 2–3 years, or sooner if you operate in sandy\/silty water or observe a weak tell‑tale stream or overheat alerts.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change the gear oil?\u003c\/summary\u003e\n    \u003cp\u003eChange every 100 hours or once per season. If the oil looks milky (water intrusion) or metallic, service immediately and inspect seals and bearings.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003ePlease provide the full model code and serial number, shaft length, control type (tiller\/remote), cylinder count (I‑3\/I‑4\/V6), and whether your engine is carbureted, EFI, or HPDI. Photos of the nameplate and the part to be replaced are very helpful.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003cp\u003eReady to find parts for your Yamaha 2‑Stroke 75–300HP outboard? Browse the main Yamaha collection and filter by horsepower, year, and model to locate compatible components.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block; padding:10px 16px; background:#1a73e8; color:#fff; text-decoration:none; border-radius:4px;\"\u003eShop Yamaha Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; color:#555;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"water-pump-repair-kit-fits-yamaha-75-250hp-replaces-61a-w0078-a3-00-61a-w0078-a4-00","title":"Water Pump Repair Kit Without Housing for Yamaha Outboards – Replaces 61A-W0078-A3-00 and 61A-W0078-A4-00","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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis Water Pump Repair Kit is an aftermarket replacement service kit for selected Yamaha outboard cooling-system applications. The kit is supplied without the water-pump housing and is intended to renew the impeller, insert, wear plate, gaskets, O-rings, dowel pins, key, and related pump hardware during water-pump service.\u003c\/p\u003e\n  \u003cp\u003eThe documented Yamaha reference numbers for this configuration include \u003cstrong\u003e61A-W0078-A3-00\u003c\/strong\u003e and \u003cstrong\u003e61A-W0078-A4-00\u003c\/strong\u003e. Because Yamaha used different pump configurations across engine families, confirm the complete engine model, year, stroke, shaft configuration, and original water-pump reference before ordering.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eAftermarket water-pump repair kit for selected Yamaha outboards.\u003c\/li\u003e\n    \u003cli\u003eSupplied without the water-pump housing.\u003c\/li\u003e\n    \u003cli\u003eIncludes an impeller, impeller key, insert cup, wear plate, gaskets, O-rings, dowel pins, and pump fasteners.\u003c\/li\u003e\n    \u003cli\u003eDesigned for cooling-system service when the existing housing is reusable and within service limits.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eReference Numbers\u003c\/h2\u003e\n  \u003cp\u003eThese numbers are manufacturer or aftermarket catalog references associated with this water-pump kit family. They are provided for identification only; verify the application against your engine before installation.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Reference Numbers\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eApplication Note\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n\u003ctd\u003eWater-pump kit reference used on selected Yamaha 2-stroke applications.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A4-00\u003c\/td\u003e\n\u003ctd\u003eWater-pump repair-kit reference used on selected Yamaha 4-stroke applications.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3396-1\u003c\/td\u003e\n\u003ctd\u003eAftermarket catalog reference associated with the Yamaha water-pump kit family; confirm housing configuration before purchase.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-48618\u003c\/td\u003e\n\u003ctd\u003eAftermarket catalog reference; application and contents should be verified against the original part.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n  \u003cp\u003eCatalog records associate the 61A-W0078-A3-00 reference with selected Yamaha 2-stroke engines, including examples from the 150, 175, and 200 hp families. The 61A-W0078-A4-00 reference is documented on selected Yamaha 4-stroke engines, including F150 and F175 variants. The examples below are not a substitute for model and serial-number verification.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Documented Yamaha Compatibility Examples\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel Example\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYear Example\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e150TJRV, 150TLRV, C150TLRV, L150TXRV, S150TLRV\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A2-00\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e200TLRV, L200TXRV, S200TXRV\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A2-00\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eLZ150TXRY, VZ150TLRY, Z150TLRY, Z150TXRY\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eLZ200TXRY, Z200TLRY, Z200TXRY\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e150TXRZ, LX150TXRZ, LZ150TXRZ, SX150TXRZ, VX150TLRZ, VZ150TLRZ\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2001\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF150JB, F150LB, F150LB2, F150LCA, F150LCA2, F150XB, F150XB2, F150XCA, F150XCA2\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2021\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A4-00\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF175LA\u003c\/td\u003e\n\u003ctd\u003e175\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2021\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A4-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The references above occur in different Yamaha model, year, and configuration records. Do not treat a horsepower-only match as confirmed fitment. Check the original pump reference and compare the existing parts before ordering.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater pump repair kit\u003c\/dd\u003e\n    \u003cdt\u003eHousing\u003c\/dt\u003e\n\u003cdd\u003eNot included; supplied without water-pump housing\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eReplacement service part for selected Yamaha outboards\u003c\/dd\u003e\n    \u003cdt\u003eReference Numbers\u003c\/dt\u003e\n\u003cdd\u003e61A-W0078-A3-00 and 61A-W0078-A4-00\u003c\/dd\u003e\n    \u003cdt\u003eConstruction\u003c\/dt\u003e\n\u003cdd\u003eAftermarket replacement components\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Insert cup \/ cartridge insert, Yamaha reference 61A-44322-02-00\u003c\/li\u003e\n    \u003cli\u003e1 x Water-pump gasket, Yamaha reference 6E5-44315-A0-00\u003c\/li\u003e\n    \u003cli\u003e1 x Impeller, Yamaha reference 6E5-44352-01-00\u003c\/li\u003e\n    \u003cli\u003e1 x Wear plate \/ cartridge outer plate, Yamaha reference 6G5-44323-01-00\u003c\/li\u003e\n    \u003cli\u003e4 x Pump bolts with washers\u003c\/li\u003e\n    \u003cli\u003e1 x Woodruff key, Yamaha reference 90280-04M05-00\u003c\/li\u003e\n    \u003cli\u003e1 x O-ring, Yamaha reference 93210-37M67-00\u003c\/li\u003e\n    \u003cli\u003e1 x O-ring, Yamaha reference 93210-86M38-00\u003c\/li\u003e\n    \u003cli\u003e2 x Dowel pins, Yamaha reference 93606-12019-00\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eThe water-pump housing is not included. Reuse the original housing only after checking it for grooves, cracks, distortion, corrosion, and excessive wear.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eDisconnect the battery and secure the outboard according to the manufacturer's service procedure.\u003c\/li\u003e\n    \u003cli\u003eRemove the lower unit and drain the gearcase lubricant as required by the service manual.\u003c\/li\u003e\n    \u003cli\u003eRemove the water-pump cover and take out the old impeller, key, gasket, insert, wear plate, O-rings, pins, and related hardware.\u003c\/li\u003e\n    \u003cli\u003eInspect the reusable housing and driveshaft. Do not install the kit if the housing is damaged or excessively worn.\u003c\/li\u003e\n    \u003cli\u003eClean all mating surfaces and install the new gasket, insert, wear plate, key, and impeller in the correct order.\u003c\/li\u003e\n    \u003cli\u003eRotate the driveshaft in the manufacturer's specified direction while seating the impeller vanes in the housing.\u003c\/li\u003e\n    \u003cli\u003eInstall the new O-rings, dowel pins, bolts, and washers. Tighten fasteners to the Yamaha service-manual specification for the exact engine.\u003c\/li\u003e\n    \u003cli\u003eReinstall the lower unit, aligning the driveshaft, shift shaft, and water tube correctly.\u003c\/li\u003e\n    \u003cli\u003eRefill the gearcase with the specified marine lubricant.\u003c\/li\u003e\n    \u003cli\u003eRun the engine only with an adequate water supply and confirm a steady tell-tale stream and normal operating temperature.\u003c\/li\u003e\n  \u003c\/ol\u003e\n  \u003cp\u003eAlways use the service manual for the exact engine model, serial range, torque values, sealants, and adjustment procedures.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I confirm fitment?\u003c\/summary\u003e\n    \u003cp\u003eCompare the complete engine model, year, stroke, shaft configuration, and original water-pump reference with the compatibility information. The strongest confirmation is a match to 61A-W0078-A3-00 or 61A-W0078-A4-00 together with the correct pump configuration. Horsepower alone is not sufficient.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this kit include the water-pump housing?\u003c\/summary\u003e\n    \u003cp\u003eNo. This listing is for a repair kit without the housing. The original housing must be inspected and reused only if it is serviceable.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the symptoms of a worn water pump?\u003c\/summary\u003e\n    \u003cp\u003eCommon symptoms include a weak or intermittent tell-tale stream, overheating alarms, steam, elevated operating temperature, or a damaged, brittle, or cracked impeller.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use the kit on any Yamaha 75–300 hp engine?\u003c\/summary\u003e\n    \u003cp\u003eNo. The kit is not confirmed for every Yamaha engine in that horsepower range. Yamaha water-pump parts vary by model, year, stroke, shaft configuration, and serial range. Verify the exact application before purchase.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this an OEM Yamaha kit?\u003c\/summary\u003e\n    \u003cp\u003eNo. This is an aftermarket replacement kit. Yamaha reference numbers are used only to identify the intended application and cross-reference the original service parts.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the impeller be serviced?\u003c\/summary\u003e\n    \u003cp\u003eInspect the water pump according to the engine manufacturer's maintenance schedule. Replace the impeller sooner when the engine operates in saltwater, sand, silt, or other abrasive conditions, or whenever overheating or reduced tell-tale flow occurs.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I install it without a service manual?\u003c\/summary\u003e\n    \u003cp\u003eProfessional installation is recommended. Correct assembly, torque, sealants, lower-unit alignment, and post-installation cooling-system testing depend on the exact engine model.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eConfirm the engine model, year, stroke, serial range, and original part reference before ordering.\u003c\/li\u003e\n    \u003cli\u003eDo not install the kit if the pump housing, driveshaft, or mating surfaces are damaged or outside service limits.\u003c\/li\u003e\n    \u003cli\u003eNever run an outboard without an adequate water supply.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement part and is not manufactured by Yamaha.\u003c\/li\u003e\n    \u003cli\u003eUse the exact manufacturer's torque and maintenance specifications for your engine.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We supply aftermarket components for routine marine maintenance and repair.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Information\u003c\/strong\u003e — Reference numbers and compatibility details are provided to help match the correct service part.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSupport for Maintenance Work\u003c\/strong\u003e — Review the complete engine information and contact support if you need help comparing the original part.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723783377211,"sku":"23KY723","price":100.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_F75_to_F100_61A-W0078-00_-_JLM_MARINE-8289416.jpg?v=1763031674"}],"url":"https:\/\/seasierra.com\/collections\/yamaha-2-stroke-75-300hp-outboard.oembed","provider":"SeaSierra","version":"1.0","type":"link"}