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Author Topic:   Water pump impeller
prm1177 posted 01-09-2004 12:38 PM ET (US)   Profile for prm1177   Send Email to prm1177  
What is the consensus here about replacing your water pump impeller each season? Should one do it no matter how many hours you have on the engine?
JBCornwell posted 01-09-2004 01:08 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
Industry practice and most manufacturers recommendation is two seasons in fresh water, regardless of hours.

I would expect that one season would be a better idea in salt water or if used in turbid waters, regardless of hours.

I replace mine annually. Even if it only has 20-30 hours in use, it has a year of exposure.

Red sky at night. . .

rwest posted 01-15-2004 03:25 PM ET (US)     Profile for rwest  Send Email to rwest     
I live on the Eastern Shore of VA. Atlantic on one side and Chesapeake Bay on the other. I have the impeller changed every other year. That is what is recommended locally by the folks who are waterman here as well as my Merc dealer. The one I replaced a fter the first 2 seasons looked like it came from the box but still I felt better changing it. I have seen them pulled after several seasons and there was nothing left but little round rubber beads about the size of a pea. I generally run the boat about 150 hrs underway time each year and I flush the engine every time I bring her back home. Having towed in boats that were disabled due to this, I like to play it safe.

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