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  #1  
Old 09-13-2008
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Raw water impeller

Lost a vane on my raw water impeller and it has moved in to the system Engine:Yanmar 3ym30. Impeller:Johnson, model 810b. Piece is about 7/8" x 1/4" Engine seems to be running at the right temperature and water is moing through the system. Should I take start taking things apart until I find it, or hope it has moved through.
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Old 09-13-2008
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Cool

I would not try to find the piece by disassembling anything major. If the piece were to get stuck in an undesireable place, it would probably be in the thermostat itself. If you've put several hours on the enine since the impeller change with no problems noted you're probably in the clear.

The missing piece will probably only make itself available at the worst possible time. Heat exchangers and thermostats usually catch the missing parts. A resulting problem may or may not be immediately apparent.

I'm sure there will be some more advise given shortly that may relieve your anxiety.

Good Luck!
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Old 09-14-2008
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If it ain't broke don't fix it. Wait until you're going to do a heat exchanger clean-up or thermostat replacement before searching for the errant piece of rubber impeller.
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