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Posting a reply to: RE: Yamaha F150

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Muskydanno621

Posted 10/18/2016 7:07 AM (#833931 - in reply to #833930)
Subject: RE: Yamaha F150

Posts: 92

I do mine every other year or so. It really varies. I don't run my motor(a 2004 250 hpdi yammie) in sand or anything really without being trimmed up so generally when i pull the impeller it is in really good shape and may have a few stress marks in the rubber and thats about it.
This is using the big motor an average of about 70 hours of run time a year. I ran three seasons once without changing but in the middle of this season found my water pressure slowly going down and upon pulling the lower unit off found one leg of impeller gone...In light of that new data i went back to every other year whether it needs it or not.
Really i think it depends on your usage and the water quality you are running it in.