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  1. Replacing Impeller on Alpha 1 Gen II - iboats Boating Forums

    Apr 17, 2013 · Re: Replacing Impeller on Alpha 1 Gen II Below is the information from the OEM service manual. Video's are good for getting a rough idea of what you are doing, but you need to make sure …

  2. Grease for impeller? | Boating Forum - iboats Boating Forums

    Apr 2, 2014 · Re: Grease for impeller? ^^ i have to agree! i install the impeller dry, into the housing, align the drive pin , and set the housing down over it. works every time. no need for "ease of installation'.

  3. 25 HP EFI water pump impeller replacement - iboats Boating Forums

    Oct 10, 2016 · Changed impeller (old one was fine aswell) but still no cooling water from water pump indicator hole. Blew compressed air through water pump indicator hole - no blockage.

  4. how often do you change your impeller? - iboats Boating Forums

    Mar 31, 2010 · Re: how often do you change your impeller? So here is the real deal. If you use your boat the impeller wears, needs replacing. If you don't use your boat the impeller sits in the housing with …

  5. Impeller, what are signs it needs replaced? - iboats Boating Forums

    Jun 13, 2014 · With the early style (short stiff vanes) impeller t does need to be replaced at an interval no greater than 2 years, but annual is best. Usually by the time you get the drive pulled apart and the …

  6. How to change out sea water pump impeller - iboats Boating Forums

    Feb 15, 2019 · I have a 2014 5.7 MAG 350 Bravo Mercruiser. I want to change out the sea water impeller for the first time (I am an amateur mechanic). Getting access from the side bottom seems …

  7. 496 Mercruiser HO impeller water pump change - iboats Boating Forums

    Mar 30, 2013 · Re: 496 Mercruiser HO impeller water pump change as with any overheat situation, the first place to look is the impeller you more than likely have the newer style brass pump, you shouldnt …

  8. Impeller lubricant | Boating Forum - iboats Boating Forums

    Jun 24, 2005 · What do you guys use to lubricate the impeller when your changing it. I have seen some people use grease but I don't really want to run that through the engine, unless anybody out there …

  9. Shredded Impeller-How to Backflush? - iboats Boating Forums

    Jul 19, 2008 · Re: Shredded Impeller-How to Backflush? Is it apart, first off take it apart and see if there are missing pieces, maybe you got lucky and the impeller did not tear apart. T-stat, t-stat housing …

  10. Water Pump Impeller replacement intervals? - iboats Boating Forums

    Mar 7, 2011 · Re: Water Pump Impeller replacement intervals? Russian roulette has a 1 in 6 chance, impeller change basically same thing, a lot of people will get lucky, but do you want to be the one …