{"product_id":"yamaha-water-pump-repair-kit-61a-w0078-a4-00-see-description-for-applicable-engine-models","title":"Yamaha - Water Pump Repair Kit for Select Outboard Engines - 61A-W0078-A4-00","description":"\u003ch2\u003eYamaha Water Pump Repair Kit for Select Outboard Engines - 61A-W0078-A4-00\u003c\/h2\u003e\n\u003cp\u003eShop Yamaha Water Pump Repair Kit 61A-W0078-A4-00 for compatible Yamaha outboard engines. This genuine Yamaha water pump repair kit is designed to help restore proper cooling system performance, maintain water flow, and protect the engine from overheating during operation.\u003c\/p\u003e\n\u003cp\u003eYamaha 61A-W0078-A4-00 is an OEM Yamaha water pump repair kit part number. The safest way to confirm fitment is to match the full part number, Yamaha outboard model, horsepower, and serial-number range before purchasing.\u003c\/p\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct name:\u003c\/strong\u003e Yamaha Water Pump Repair Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e 61A-W0078-A4-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Yamaha outboard water pump repair kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Yamaha\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Outboard cooling system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Compatible Yamaha outboard engines where 61A-W0078-A4-00 is specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSearch variants:\u003c\/strong\u003e 61A W0078 A4, 61A-W0078-A4-00, Yamaha water pump kit, Yamaha water pump repair kit, Yamaha outboard water pump kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat Yamaha 61A-W0078-A4-00 Is Used For\u003c\/h3\u003e\n\u003cp\u003eYamaha 61A-W0078-A4-00 is a genuine Yamaha water pump repair kit used to rebuild or service the water pump assembly on compatible Yamaha outboards. The water pump circulates cooling water through the engine to help regulate temperature and prevent overheating.\u003c\/p\u003e\n\u003cp\u003eUse this Yamaha water pump repair kit when your parts diagram or service guidance specifies this OEM part number for the cooling-system service:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe impeller is worn or damaged\u003c\/li\u003e\n\u003cli\u003eCooling water flow is weak\u003c\/li\u003e\n\u003cli\u003eThe engine is running hotter than normal\u003c\/li\u003e\n\u003cli\u003eThe outboard is due for scheduled water pump service\u003c\/li\u003e\n\u003cli\u003eThe lower unit has been removed for maintenance\u003c\/li\u003e\n\u003cli\u003eA Yamaha parts diagram lists 61A-W0078-A4-00\u003c\/li\u003e\n\u003cli\u003eThe existing pump components show wear\u003c\/li\u003e\n\u003cli\u003eCooling system performance has decreased\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause Yamaha water pump parts can vary by engine model and production range, part-number confirmation is important before ordering.\u003c\/p\u003e\n\u003ch3\u003eWhy the Yamaha Water Pump Repair Kit Matters\u003c\/h3\u003e\n\u003cp\u003eThe water pump is one of the most important cooling system components on a Yamaha outboard. It moves water through the engine so the motor can maintain proper operating temperature under load, at idle, and during extended running.\u003c\/p\u003e\n\u003cp\u003eA worn water pump can lead to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReduced cooling water flow\u003c\/li\u003e\n\u003cli\u003eWeak telltale stream\u003c\/li\u003e\n\u003cli\u003eEngine overheating\u003c\/li\u003e\n\u003cli\u003eOverheat alarms\u003c\/li\u003e\n\u003cli\u003eHigher operating temperatures\u003c\/li\u003e\n\u003cli\u003eDamage to related pump components\u003c\/li\u003e\n\u003cli\u003eIncreased risk during long runs\u003c\/li\u003e\n\u003cli\u003eExpensive engine repairs if ignored\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplacing worn pump components during scheduled service helps restore cooling efficiency and supports long-term Yamaha outboard reliability.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Yamaha OEM kit\u003c\/strong\u003e – manufactured to Yamaha factory specifications for proper fit and dependable performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestores cooling system efficiency\u003c\/strong\u003e – helps maintain proper water circulation through the engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete water pump service solution\u003c\/strong\u003e – includes essential parts needed for water pump assembly service\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine-grade materials\u003c\/strong\u003e – designed for heat, friction, continuous water exposure, and harsh marine conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling-system protection\u003c\/strong\u003e – helps reduce the risk of overheating caused by worn pump components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart-number-specific fitment\u003c\/strong\u003e – supports accurate ordering when 61A-W0078-A4-00 is listed for your engine\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Confirm This Yamaha Water Pump Kit Fits\u003c\/h3\u003e\n\u003cp\u003eConfirm fitment before ordering Yamaha Water Pump Repair Kit 61A-W0078-A4-00. Water pump repair kits can vary by Yamaha outboard model, horsepower, lower-unit design, and serial-number range.\u003c\/p\u003e\n\u003cp\u003eBefore buying, check:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYamaha outboard model\u003c\/li\u003e\n\u003cli\u003eEngine horsepower\u003c\/li\u003e\n\u003cli\u003eSerial number or production range\u003c\/li\u003e\n\u003cli\u003eExisting water pump part number\u003c\/li\u003e\n\u003cli\u003eYamaha parts diagram\u003c\/li\u003e\n\u003cli\u003eService manual recommendations\u003c\/li\u003e\n\u003cli\u003eWhether 61A-W0078-A4-00 is listed for your engine\u003c\/li\u003e\n\u003cli\u003eWhether related seals, gaskets, plates, or housing components are also needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your parts diagram or service information lists 61A-W0078-A4-00, this is the correct product page to review.\u003c\/p\u003e\n\u003ch3\u003eWhen to Service a Yamaha Outboard Water Pump\u003c\/h3\u003e\n\u003cp\u003eService a Yamaha outboard water pump during routine maintenance or whenever cooling performance decreases. Water pump components wear over time from heat, friction, water exposure, sand, silt, and debris.\u003c\/p\u003e\n\u003cp\u003eCommon signs to inspect the water pump and cooling system include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWeak telltale stream\u003c\/li\u003e\n\u003cli\u003eEngine running hotter than normal\u003c\/li\u003e\n\u003cli\u003eOverheat warning\u003c\/li\u003e\n\u003cli\u003eInconsistent cooling water output\u003c\/li\u003e\n\u003cli\u003eWorn, cracked, or stiff impeller\u003c\/li\u003e\n\u003cli\u003eReduced water pressure\u003c\/li\u003e\n\u003cli\u003eUnknown water pump service history\u003c\/li\u003e\n\u003cli\u003eOperation in sand, mud, or shallow water\u003c\/li\u003e\n\u003cli\u003eLong storage period before returning to use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf the engine has overheated, inspect the full water pump assembly and related cooling-system parts before returning to the water.\u003c\/p\u003e\n\u003ch3\u003eYamaha Water Pump Repair Kit vs. Impeller-Only Replacement\u003c\/h3\u003e\n\u003cp\u003eA Yamaha water pump repair kit is usually more complete than replacing the impeller alone. While an impeller-only service may be enough in some situations, a repair kit helps refresh more of the pump assembly at the same time.\u003c\/p\u003e\n\u003cp\u003eUse a water pump repair kit when:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe pump has not been serviced recently\u003c\/li\u003e\n\u003cli\u003eThe impeller shows wear or cracking\u003c\/li\u003e\n\u003cli\u003eThe housing or plate needs inspection\u003c\/li\u003e\n\u003cli\u003eCooling performance has decreased\u003c\/li\u003e\n\u003cli\u003eThe engine has experienced overheating\u003c\/li\u003e\n\u003cli\u003eYou want a more complete cooling-system service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse an impeller-only replacement only when the rest of the water pump assembly is in good condition and the service procedure allows it.\u003c\/p\u003e\n\u003ch3\u003eBasic Yamaha Water Pump Service Process\u003c\/h3\u003e\n\u003cp\u003eAlways follow the Yamaha service manual for your exact outboard model. Water pump service usually requires removing the lower unit, replacing the pump components, and reinstalling the lower unit correctly.\u003c\/p\u003e\n\u003cp\u003eBasic process:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eTurn off the engine and secure the boat or motor.\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery if required by the service procedure.\u003c\/li\u003e\n\u003cli\u003eRemove the lower unit according to Yamaha service guidance.\u003c\/li\u003e\n\u003cli\u003eRemove the water pump housing.\u003c\/li\u003e\n\u003cli\u003eInspect the old impeller, key, housing, plate, gaskets, and seals.\u003c\/li\u003e\n\u003cli\u003eReplace the water pump repair kit components.\u003c\/li\u003e\n\u003cli\u003eLubricate parts where the service manual requires it.\u003c\/li\u003e\n\u003cli\u003eReassemble the water pump housing.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit carefully.\u003c\/li\u003e\n\u003cli\u003eRefill or check lower-unit gear lube if needed.\u003c\/li\u003e\n\u003cli\u003eRun the engine with proper water supply.\u003c\/li\u003e\n\u003cli\u003eConfirm strong telltale flow and normal operating temperature.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eDo not run the engine without water supply. Even brief dry running can damage a new impeller.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions About Yamaha 61A-W0078-A4-00\u003c\/h3\u003e\n\u003ch4\u003eWhat is Yamaha 61A-W0078-A4-00?\u003c\/h4\u003e\n\u003cp\u003eYamaha 61A-W0078-A4-00 is a genuine Yamaha water pump repair kit part number used for compatible Yamaha outboard cooling system service.\u003c\/p\u003e\n\u003ch4\u003eWhat does a Yamaha water pump repair kit do?\u003c\/h4\u003e\n\u003cp\u003eA Yamaha water pump repair kit replaces worn pump components, such as the impeller, seals, gaskets, or related parts, to help restore cooling water circulation through the engine.\u003c\/p\u003e\n\u003ch4\u003eHow do I know if 61A-W0078-A4-00 fits my Yamaha outboard?\u003c\/h4\u003e\n\u003cp\u003eConfirm fitment by checking your Yamaha outboard model, horsepower, serial number, parts diagram, and existing part number. If your diagram lists 61A-W0078-A4-00, this is the correct product page to review.\u003c\/p\u003e\n\u003ch4\u003eIs 61A-W0078-A4-00 an OEM Yamaha part number?\u003c\/h4\u003e\n\u003cp\u003eYes, 61A-W0078-A4-00 is an OEM Yamaha part number for a genuine Yamaha water pump repair kit. Always match the full part number before ordering.\u003c\/p\u003e\n\u003ch4\u003eWhen should I replace my Yamaha water pump repair kit?\u003c\/h4\u003e\n\u003cp\u003eReplace or service your Yamaha water pump components during scheduled maintenance or if you notice weak water flow, overheating, an overheat alarm, reduced water pressure, or visible pump wear.\u003c\/p\u003e\n\u003ch4\u003eCan I install a Yamaha water pump repair kit myself?\u003c\/h4\u003e\n\u003cp\u003eMechanically experienced boat owners may be able to install a Yamaha water pump repair kit, but professional installation is recommended if you are not comfortable removing the lower unit or following Yamaha service procedures.\u003c\/p\u003e\n\u003ch4\u003eWhat are signs of a worn Yamaha water pump?\u003c\/h4\u003e\n\u003cp\u003eSigns of a worn Yamaha water pump include weak telltale flow, engine overheating, inconsistent cooling water output, reduced water pressure, cracked impeller vanes, or an overheat warning.\u003c\/p\u003e\n\u003ch4\u003eShould I replace the full water pump kit or only the impeller?\u003c\/h4\u003e\n\u003cp\u003eUse the Yamaha service manual and product details to confirm whether your repair requires a complete water pump repair kit or an impeller-only replacement. A full kit is appropriate for complete water pump service. An impeller-only replacement is appropriate only when the remaining water pump components are confirmed to be reusable and compatible with Yamaha service guidance.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":45626468008227,"sku":"61A-W0078-A4-00","price":70.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/61a-w0078-a3-00_1.jpg?v=1698807448","url":"https:\/\/partsvu.com\/en-au\/products\/yamaha-water-pump-repair-kit-61a-w0078-a4-00-see-description-for-applicable-engine-models","provider":"PartsVu","version":"1.0","type":"link"}