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Old 15-05-2011, 07:12   #16
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Re: When do you change your impeller?

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I think everybody should carry a spare, but have to agree that off brand impellers may not be of the same quality as the manufacturer of the engine.
Right. They may be better or worse--I just don't know. OEM impeller failures don't seem all that uncommon.

My guess is running the pump dry before it's primed contributes to the risk of delamination at the hub. That is one reason I like to put some silicon grease inside the pump housing before starting the engine first time after changing the impeller or after the boat is launched.
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Old 15-05-2011, 07:56   #17
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Re: When Do You Change Your Impeller ?

Also carrry some soare screws for the cover and wrap them in a piece of duct tape. Swapping out a impeller blade in ten foot seas provides its own challanges.
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Old 15-05-2011, 09:06   #18
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Re: When do you change your impeller?

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T but have to agree that off brand impellers may not be of the same quality as the manufacturer of the engine.
Exactly which engine manufacturers also make impellers?

Impellers are made by pump manufacturers, not engine manufacturers.
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Old 15-05-2011, 09:19   #19
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Re: When Do You Change Your Impeller ?

I've had two engines which just seemed to like impellers for breakfast...and others that seem to go forever. I would say , the less you use your boat...the more often you should change your impellor. Has anyone ever tried a small seastrainer downstream to catch the debris before the heat exchanger?
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