Thread: Replacing impeller

Originally Posted by DonDon

How to Replace a Water Pump on a 25 hp Yamaha Outboard - YouTube

2001 is probably a 2 Stroker!!!

Yes, it is a 2 stroke. Is there a difference in changing a 2 and 4 stroke motor? Im going to watch youtube videos today then try it. I watch the 25 hp video that also changed some sort of a sealed gascatte and the only part I bought was the impeller. I hope I'm not missing something.

Just be careful when taking it apart and putting back together, there are a couple of gaskets and sometimes a rubber ring on top of the housing. 99% of the time these are fine to re-use.

I bought the kit for mine. It had a big flat gasket ad well. Mines a merc though

Hey macpappy, if for some reason that isn't the problem? Don't let any dealer tell you that the "bladder" under the power head got froze up and needs to be replaced. There is no such thing as this bladder, I was told that I might have to get mine changed, and another guy was told the same thing. Must be the latest scam going around. Or ask to see a picture of it on the spec sheet.

Originally Posted by Crappie 1

Hey macpappy, if for some reason that isn't the problem? Don't let any dealer tell you that the "bladder" under the power head got froze up and needs to be replaced. There is no such thing as this bladder, I was told that I might have to get mine changed, and another guy was told the same thing. Must be the latest scam going around. Or ask to see a picture of it on the spec sheet.

That sounds like a joke to me....bad bladder low flow lol

And I won't tell you where it was that told him that--I was surprised--but crappie1 knows the place to go from now on!!

While you are in there put the whole kit in. It comes with the bottom plate with seal and all gaskets. Only 4 extra bolts to remove