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First recorded activity by BoatBanter: Jun 2007
Posts: 1,635
Default when to change raw water impeller

trainfan1 wrote:
Chad wrote:
How often do you change your raw water impellers for your motors?


1973 Evinrude 115: Last changed in 1992.

1981 Evinrude 115: Last changed prior to my purchase in 1997.

1972 Johnson 6: Never changed since new. This one gets the most use.

1973 Correct Craft Ford inboard(~45 hrs./yr): Last changed before my
purchase in 1998.

All used in a sandy bottom shallow lake.

Rob



On the latest Yamahas and I assume on other brands, you can get a
cooling water pressure display on your multi-function gauges. My guess
is that if you know what your pressure usually is under varying
conditions, you will be able to tell when something is amiss, such as an
impeller going tits up. Maybe. :}

An inspection port would be nice.