{"title":"Makara Marine 2-Stroke Outboard Engine Parts (3-250HP)","description":"\u003csection id=\"hero\" style=\"max-width: 980px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003cp\u003eThis page is for Makara Marine 2‑Stroke outboard engines in the 3–250HP range. Use it to find compatible parts and service information, including maintenance tips, common replacement parts, and troubleshooting guidance. Because many Makara 2‑stroke models cross‑reference with Yamaha platforms, you can also browse our main Yamaha collection for compatible components. Scroll to the bottom to start browsing parts for this engine, and remember you can use the Filter \u0026amp; Sort controls on the collection page to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0a5;border-radius:6px;text-decoration:none;color:#0a5;\"\u003eBrowse Yamaha Outboard Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width: 980px; margin: 0 auto; padding: 8px 12px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 3–250HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eFind the nameplate\/serial tag on the transom bracket or swivel bracket. Record the full model code, serial number, and any suffix letters.\u003c\/li\u003e\n    \u003cli\u003eDecode suffixes: S\/L\/XL often indicate shaft length; M\/E can indicate manual vs. electric start; R denotes remote steering vs. tiller. A trailing year\/series letter may indicate the production run.\u003c\/li\u003e\n    \u003cli\u003eOil system: many small 2‑strokes are premix (e.g., 50:1) while mid\/high‑power models may have an oil‑injection tank. Identify which your engine uses before ordering service parts.\u003c\/li\u003e\n    \u003cli\u003ePlatform cues: compact single\/twin cylinders (3–15HP), inline triple\/quad (20–90HP), and V4\/V6 blocks (115–250HP). Cowling size and cylinder head layout help distinguish platforms.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"platforms\" style=\"max-width: 980px; margin: 0 auto; padding: 8px 12px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003ePortable 3–15HP\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;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eSingle or twin‑cylinder, carbureted 2‑stroke; tiller steer; lightweight portables.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eMakara 3–4HP, 5–6HP, 8–9.9HP, 15HP 2‑stroke families.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eVery light, easy starting, simple cooling\/fuel systems.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eVerify premix vs. oil‑injection delete. Impellers and spark plugs are routine wear items.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eMidrange 20–90HP\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;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eInline‑3 or inline‑4 2‑stroke; carbureted with conventional ignition.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eMakara 20–30HP, 40–60HP, 70–90HP 2‑stroke families.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eStrong mid‑range torque, straightforward service, widely supported parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eCooling components and many service parts cross‑reference Yamaha patterns; confirm by model code and dimensions.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eHigh‑Power 115–250HP\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;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eV4 or V6 2‑stroke; multi‑carb induction; oil‑injection on many variants.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eMakara 115\/130\/150\/175\/200\/225\/250HP 2‑stroke families.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eHigh output, durable gearcases, robust charging systems.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eThermostats, impellers, and anodes are critical for longevity; match components to your exact model\/serial and temperature spec.\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: 980px; margin: 0 auto; padding: 8px 12px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 2‑stroke outboards. Always follow your engine’s official service manual and adjust for heavy use, silt, or saltwater operation.\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;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd\u003eInspect for water contamination (milky oil). Replace seals if intrusion detected.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd\u003eInspect every 50 hrs; replace ~100 hrs\u003c\/td\u003e\n        \u003ctd\u003eUse correct heat range and gap. Fouling indicates mixture or oiling issues.\u003c\/td\u003e\n        \u003ctd\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\u003eFuel filter \/ in‑line filter\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd\u003eReplace more often with ethanol fuel or debris in tank. Check primer bulb condition.\u003c\/td\u003e\n        \u003ctd\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\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd\u003eEvery 2 seasons (sooner in sandy\/silty water)\u003c\/td\u003e\n        \u003ctd\u003eWeak tell‑tale or overheat warnings often trace to a worn impeller.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eWater Pump Impeller Rebuild Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eThermostat\u003c\/td\u003e\n        \u003ctd\u003eInspect every 2 seasons; replace 3–5 years\u003c\/td\u003e\n        \u003ctd\u003eStuck‑open runs cold and smokes; stuck‑closed overheats. Match temp spec to your model.\u003c\/td\u003e\n        \u003ctd\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\u003eAnodes (internal \u0026amp; external)\u003c\/td\u003e\n        \u003ctd\u003eInspect every 3 months; replace when ~50% depleted\u003c\/td\u003e\n        \u003ctd\u003eEssential in salt\/brackish water. Clean contact areas for continuity.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePremix ratio \/ oil‑injection service\u003c\/td\u003e\n        \u003ctd\u003eCheck every service\u003c\/td\u003e\n        \u003ctd\u003eConfirm correct premix (commonly 50:1) or service injection tank, screen, and hoses.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eHoses\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePropeller \u0026amp; hardware\u003c\/td\u003e\n        \u003ctd\u003eInspect every 50 hrs\u003c\/td\u003e\n        \u003ctd\u003eCheck for bent blades and spun hubs; verify cotter pin and nut torque.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGearcase seals (if water in oil)\u003c\/td\u003e\n        \u003ctd\u003eAs needed\u003c\/td\u003e\n        \u003ctd\u003ePressure\/vac test after reseal. Replace shift\/prop seals and driveshaft seals as required.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\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: 980px; margin: 0 auto; padding: 8px 12px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service – \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System – \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eWater Pump Impeller Rebuild Kits\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\u003eIgnition \/ Electrical – \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropellers \u0026amp; Hubs – \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase \u0026amp; Seals – \u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection – \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width: 980px; margin: 0 auto; padding: 8px 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;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeak tell‑tale or overheat alarm\u003c\/td\u003e\n        \u003ctd\u003eInspect water inlet screens, tell‑tale hose, impeller wear, thermostat operation.\u003c\/td\u003e\n        \u003ctd\u003eWater pump kit, thermostat, intake screen, anodes.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd\u003eCheck propeller for damage or spun hub; replace fuel filter; inspect plugs and carb settings.\u003c\/td\u003e\n        \u003ctd\u003ePropeller, fuel filter, spark plugs, carburetor rebuild kit.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd\u003eVerify primer bulb and fuel lines, choke\/enrichment function, plug condition and gap.\u003c\/td\u003e\n        \u003ctd\u003eFuel pump\/primer bulb, hoses, spark plugs, carburetor kit.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eExcessive smoke (2‑stroke)\u003c\/td\u003e\n        \u003ctd\u003eConfirm premix ratio, check oil‑injection delivery, ensure thermostat isn’t stuck open.\u003c\/td\u003e\n        \u003ctd\u003eHoses, spark plugs, thermostat.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGearcase noise \/ metal in oil\u003c\/td\u003e\n        \u003ctd\u003eCheck gear oil level\/condition; inspect prop shaft for fishing line; perform pressure\/vac test.\u003c\/td\u003e\n        \u003ctd\u003eLower unit seal kit, bearings, gear oil.\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: 980px; margin: 0 auto; padding: 8px 12px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable across different years or between Makara and Yamaha?\u003c\/summary\u003e\n    \u003cp\u003eMany Makara 2‑stroke models follow Yamaha patterns, but interchange varies by horsepower and platform. Always confirm by model\/serial plate and compare the original part’s dimensions\/specification before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, replace every two seasons, or sooner for heavy use or sandy\/silty water. If the tell‑tale is weak or you’ve had an overheat alarm, service the full water pump kit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change gear oil?\u003c\/summary\u003e\n    \u003cp\u003eChange lower‑unit gear oil every 100 hours or annually. If the drained oil looks milky or has metal debris, investigate seals and internal wear before further use.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm compatibility?\u003c\/summary\u003e\n    \u003cp\u003ePlease provide the model and serial from the nameplate, shaft length, control type (tiller\/remote), and any numbers stamped on the old part. Photos of the part and mounting area are also helpful.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"max-width: 980px; margin: 0 auto; padding: 12px;\"\u003e\n  \u003cp\u003eReady to find parts? Browse our Yamaha collection by horsepower, year, and model to locate compatible components for Makara 2‑stroke outboards.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0a5;border-radius:6px;text-decoration:none;color:#0a5;\"\u003eBrowse Yamaha Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px;color:#444;\"\u003eIf you’re unsure about your model, send us a clear 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":"thermostat-50-c-fits-yamaha-2-stroke-3hp-250hp-outboards-replaces-6e5-12411-688-12411-10-6h3-12411","title":"50°C Thermostat for Yamaha 2-Stroke Outboards – 25N, 30D, 40V, 225G, 250A\/B","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\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis 50°C (122°F) replacement thermostat is designed for specified Yamaha 2-stroke outboard applications. It helps regulate engine operating temperature within the intended cooling-system range and is listed for Yamaha models including the 25N from 1994 onward, 30D, 40V, 225G, 250A, and 250B.\u003c\/p\u003e\n  \u003cp\u003eThe thermostat is identified by Yamaha OEM reference \u003cstrong\u003e6E5-12411-30\u003c\/strong\u003e and supersedes \u003cstrong\u003e688-12411-10\u003c\/strong\u003e and \u003cstrong\u003e688-12411-11\u003c\/strong\u003e. Confirm the complete engine model and year before ordering, because thermostat fitment can vary between otherwise similar outboards.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e50°C (122°F) operating temperature rating.\u003c\/li\u003e\n    \u003cli\u003eReplacement thermostat for specified Yamaha 2-stroke outboards.\u003c\/li\u003e\n    \u003cli\u003eUse the model and year information below together with your engine service information to confirm fitment.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eThese are the documented manufacturer references for this thermostat.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003ePart Number\u003c\/th\u003e\n          \u003cth\u003eReference\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\u003e6E5-12411-30\u003c\/td\u003e\n          \u003ctd\u003eCurrent listed reference\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e688-12411-10\u003c\/td\u003e\n          \u003ctd\u003eSuperseded reference\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e688-12411-11\u003c\/td\u003e\n          \u003ctd\u003eSuperseded reference\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 \u0026amp; Model Compatibility\u003c\/h2\u003e\n  \u003cp\u003eThe company fitment record identifies the following Yamaha two-stroke applications. Model, year, horsepower, and stroke conditions should be treated together when checking compatibility.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Yamaha Engine and 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\u003eYear condition\u003c\/th\u003e\n          \u003cth\u003eOEM reference\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\u003e25N\u003c\/td\u003e\n          \u003ctd\u003e25 HP\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1994 onward\u003c\/td\u003e\n          \u003ctd\u003e6E5-12411-30\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e30D\u003c\/td\u003e\n          \u003ctd\u003e30 HP\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003eVerify engine year\u003c\/td\u003e\n          \u003ctd\u003e6E5-12411-30\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e40V\u003c\/td\u003e\n          \u003ctd\u003e40 HP\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003eVerify engine year\u003c\/td\u003e\n          \u003ctd\u003e6E5-12411-30\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e225G\u003c\/td\u003e\n          \u003ctd\u003e225 HP\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003eVerify engine year\u003c\/td\u003e\n          \u003ctd\u003e6E5-12411-30\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e250A\u003c\/td\u003e\n          \u003ctd\u003e250 HP\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003eVerify engine year\u003c\/td\u003e\n          \u003ctd\u003e6E5-12411-30\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e250B\u003c\/td\u003e\n          \u003ctd\u003e250 HP\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003eVerify engine year\u003c\/td\u003e\n          \u003ctd\u003e6E5-12411-30\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp\u003eDo not assume compatibility with other Yamaha, Parsun, Makara, or non-Yamaha engines solely because the horsepower or thermostat temperature is similar. Check the full model designation and compare the original thermostat reference before ordering.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n    \u003cdd\u003eThermostat\u003c\/dd\u003e\n    \u003cdt\u003eApplication\u003c\/dt\u003e\n    \u003cdd\u003eSpecified Yamaha 2-stroke outboard engines\u003c\/dd\u003e\n    \u003cdt\u003eOperating Temperature\u003c\/dt\u003e\n    \u003cdd\u003e50°C (122°F)\u003c\/dd\u003e\n    \u003cdt\u003ePrimary OEM Reference\u003c\/dt\u003e\n    \u003cdd\u003e6E5-12411-30\u003c\/dd\u003e\n    \u003cdt\u003eSuperseded References\u003c\/dt\u003e\n    \u003cdd\u003e688-12411-10 and 688-12411-11\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 50°C thermostat\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eA thermostat housing gasket is not listed as included with this product. Inspect the existing gasket and replace it if required by the service procedure or if it is damaged.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eMake sure the outboard is stopped, completely cool, and safely secured before beginning work.\u003c\/li\u003e\n    \u003cli\u003eDisconnect the battery or follow the isolation procedure specified in the engine service manual.\u003c\/li\u003e\n    \u003cli\u003eLocate the thermostat housing and place a suitable drain pan beneath the work area.\u003c\/li\u003e\n    \u003cli\u003eRemove the housing cover carefully and retain the fasteners in their original positions.\u003c\/li\u003e\n    \u003cli\u003eRemove the existing thermostat and note its orientation before installation.\u003c\/li\u003e\n    \u003cli\u003eClean the housing and cover mating surfaces without damaging them.\u003c\/li\u003e\n    \u003cli\u003eInstall the new thermostat in the same orientation as the original part.\u003c\/li\u003e\n    \u003cli\u003eInstall a suitable new housing gasket if required; the gasket is not included with this thermostat.\u003c\/li\u003e\n    \u003cli\u003eReinstall the cover and tighten the fasteners to the torque specified in the service manual.\u003c\/li\u003e\n    \u003cli\u003eRun the engine using the correct water-supply procedure, check for leaks, and confirm normal cooling-system operation before returning the outboard to service.\u003c\/li\u003e\n  \u003c\/ol\u003e\n  \u003cp\u003eInstallation procedures and torque specifications vary by engine model. Use the applicable Yamaha service manual when servicing the thermostat.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat temperature is this thermostat rated for?\u003c\/summary\u003e\n    \u003cp\u003eThis thermostat is rated for 50°C (122°F).\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich Yamaha engines are listed for this thermostat?\u003c\/summary\u003e\n    \u003cp\u003eThe company fitment record lists Yamaha 2-stroke models 25N from 1994 onward, 30D, 40V, 225G, 250A, and 250B. Confirm the complete model and year before installation.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this thermostat include a housing gasket?\u003c\/summary\u003e\n    \u003cp\u003eNo housing gasket is listed as included. Inspect the old gasket and replace it when required by the service manual or when the gasket is damaged.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use a different temperature-rated thermostat?\u003c\/summary\u003e\n    \u003cp\u003eUse the temperature rating specified for your exact engine. Installing a thermostat with a different rating may affect engine temperature regulation and should not be done without confirmation from the applicable service information.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow can I confirm fitment before ordering?\u003c\/summary\u003e\n    \u003cp\u003eCompare your complete engine model and year with the compatibility table, then compare the thermostat reference on your original part or in the service manual. Do not rely on horsepower alone.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAllow the engine to cool completely before removing the thermostat housing.\u003c\/li\u003e\n    \u003cli\u003eFollow the service manual for cooling-system, water-supply, torque, and gasket procedures.\u003c\/li\u003e\n    \u003cli\u003eVerify the complete engine model and year before purchase.\u003c\/li\u003e\n    \u003cli\u003eIf the original part or housing differs, stop and confirm compatibility before installation.\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\u003eWe provide marine replacement parts with fitment information organized around the applicable engine model and service requirements.\u003c\/li\u003e\n    \u003cli\u003eFor the best result, compare the original part reference and full engine identification before ordering.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723966976315,"sku":"24TH502","price":26.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24TH502_1_e75bbef1-e1d8-4dc4-9d9d-7966c0b5be98.jpg?v=1763038657"}],"url":"https:\/\/seasierra.com\/collections\/makara-marine-2-stroke-outboard-engine-parts-3-250hp.oembed","provider":"SeaSierra","version":"1.0","type":"link"}