04-22-2017, 06:17 PM
I have the same engines in my Tiara 2900. The engine manual says to change the raw water pump impellers every 50 hours. A local mechanic said to change them every 200 hours. I changed one of the engine impellers at about 150 hours and put in a new one. The old one looked good as new so I kept it as a spare and have not changed the other engine's impeller.


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