How often to change impeller on mercruiser. IMPORTANT: Marine Coo

How often to change impeller on mercruiser. IMPORTANT: Marine Cooling System MerCruiser Diagrams: See various part diagrams for Alpha Sterndrive models with water pump impeller located in the lower unit as well as the Bravo Sterndive models where the Sea Water Pump Impeller is mounted within the engine mounted Sea Water pump. of a 2007 Mercruiser 350 MAG MPI with a Bravo 3 with The maintenance schedule for your Mercruiser Alpha One sterndrive is specific. So either way it goes bad. Jun 13, 2009 · MERCRUISER 5. The good news is Mar 28, 2023 · I want to replace the raw water impeller in my 2003, 350 5. Since you don’t know when the impeller was last changed you’ll be changing it to get your baseline. Digging deeper, I found that both pump bearings were compromised with seawater, and were close to failure. The PO had just had the drive gone through and had the boat serviced by a merc repair shop. You mileage may vary. I have maybe put 20 hours on the boat since i have owned it. Full impeller and housing replacement. You should change your Mercruiser Impeller replacement on a Alpha one Generation 1. Oct 17, 2007 · The manual says every other year. Dale Jan 27, 2015 · The impeller is a completely different animal to the impeller in an Alpha One. I boat in somewhat brackish water and the boat stays on a lift. Unlike many of Mercury's larger motors, the lower unit found on this model is equipped with a water pump housing that uses a replaceable cartridge Jun 13, 2025 · Generally, it is recommended to replace the impeller every 100 hours of operation or every one to three years, depending on the specific guidelines from your boat’s manufacturer. Take the whole pump out, because if you think getting at the pump is fun, wait until you try to get the new impeller in the pump housing Apr 25, 2012 · I bought my tri toon in 08'. You're supposed to inspect your water pump every 100 hours of operation or annually, whichever milestone occurs first. Best regards, Frank Feb 5, 2011 · For example, this year, I noticed a drip under one pump, and found that the impeller driveshaft seal had failed, allowing seawater into the bearing housing. Step #1: Verify that the temperature gauge is reading accurately. Yes, Alpha One impellers need to be changed every other year, at least. For instance, MerCruiser systems often have a longer lifespan for their impellers, suggesting a change every three years. They replaced the water pump / impeller in the drive at this time. com Links Below: I discuss frequency of replacement of the delicate rubber water pump impeller in a Mercruiser Inboard Engine. Before diving into the water pump impeller replacement process, it’s important to take a few preparatory steps to ensure a smooth and successful procedure. 7L MAG MPI w/ a Bravo 3. Oct 20, 2024 · Step 1: Preparation. It can take a long time to clock 100 hours, so we also recommend that the impeller is replaced every other year for the majority of outboards and sterndrives. So, I am rebuilding both pumps this year, in addition to an impeller change. May 31, 2012 · Hi All: I want to replace the impeller on my 2000 Bravo 1, and iBoats lists just one such impeller. I show you how to replace and change your impeller on your boat with a Mercury Mercruiser Alpha 1 or 2 Generation sterndrive outdrive. As a little background, I just purchased this boat, and. View Diagrams . Mar 31, 2010 · Re: how often do you change your impeller? So here is the real deal. Bad gauges The maintenance schedule for the 150-hp Mercury outboard motor calls for replacing the water pump's impeller after every 100 hours of operation, or once a year. But when I had my accursed Alpha drive, the impeller always went bad 3/4 of the way though the second year. 3 days ago · The procedure is pretty much the same thing as what you would have to do in order to do an impeller change. How to replace your alpha one lower end impeller water pu Dec 14, 2008 · How often should you replace the water pump impellers on outdrives? I have Bravo III's with 100 hrs on them in two seasons. The not-so-good news is that if the impeller has missing or damaged blades, you have to replace it. It has never given me any problems at all, but i am curious how often i should replace the impeller. Regular inspections are also crucial. Nov 5, 2018 · I try to go for 2 years or 100 hours on the Bravo impellers. After two such occurrences I decided it was cheaper to replace it annually. But the Gen II impeller is a long vane or 'floppy' impeller and has a considerably longer life. Most will last the 3 years recommended service interval without any problem whatsoever. The design of these units extends the life of impellers. If you use your boat the impeller wears, needs replacing. 0L MPI BR3 (260 PHP) How often should you replace the impeller? I've not done mine yet and it's been 7 years but only 200 hours on engine. My manual does not state a part number, and I want to ascertain I get the right one. I thought there were two different types. See full list on boatingbasicsonline. Does the entire pump have to be removed or can I remove just the impeller housing/ pulley, replace the impeller and re-install ? The impeller has been changed only once in 650 hours ( about 300 hours ago ) - all original other than the impeller. The one exception to this rule would be MerCruiser systems. Suggested replacement interval is every other year. Definitely a PITA to access. MerCruiser impellers should be replaced every three years. If you don't use your boat the impeller sits in the housing with the blades bent over and looses it's elasticity. jycfw lapyo phqm myla gzfbo pzrxu fxm cecdfkk hkgghd qzgt