2003 Yamaha F225

[johnfbushjr]

Just curious, about how many hours do you think I can put on this engine before it would be time to re-power it. Its got 800 right now, was used in saltwater for 2 seasons then freshwater ever since? I suppose it comes down to when it starts losing compression. Just looking for a rough estimate so I can start saving up.

 

[Brent]

Several thousands with regular maintenance, avoid lugging the motor, carrying too much load and hot rodding.


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[Brent]

Has it been inspected for dry exhaust corrosion?


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[johnfbushjr]

No it hasn't been inspected for that but I am aware of the issue. I usually troll for a couple of hours then shut the engine off to stow gear before I make the run back to port. When I restart I do notice something that looks like oil on the water's surface, I think that is a sign of the corrosion issue so I think I have the problem. My plan was to inspect for it during the next off season when its time for another water impeller kit.

 

[Brent]

Scoping the mid section is helpful and SIM has a kit and expect others do, too. Additional parts may be needed depending if it needs repairs. One unknown is if there is damage to power head


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[johnfbushjr]

You lost me with "damage to the powerhead". What can happen to the powerhead? Do you mean damage caused by running the engine with a low oil level in the crankcase? I'm not really sure what problem with corrosion causes.

 

[Brent]

Corrosion can enter the powerhead.


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[mheltunen]

Here is a link to a detailed discussion on the f225 corrosion problem: https://www.thehulltruth.com/boating-fo ... st12639145


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[Brent]

I was lucky and only mid section and oil pan was bad , and needed a Speedy sleeve in the oil,pan.

Pull both thermostats, replace and check housing for corrosion.

I also checked all anodes including ones in the head and only the trim one was replaced

Buy the Yamaha manual either hard copy or digital

Search CP - “corrosion”


Google
yamaha f225 exhaust corrosion power head

Many articles with pics


Still burns my biscuits


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[Mpellet]

Just curious, about how many hours do you think I can put on this engine before it would be time to re-power it. Its got 800 right now, was used in saltwater for 2 seasons then freshwater ever since? I suppose it comes down to when it starts losing compression. Just looking for a rough estimate so I can start saving up.

I got 1862 hours out of my 2005 Yamaha F225. I ran the engine pretty hard most of it’s life, stayed current on oil changes and such. Midsection was replaced at 700 hours. I think corrosion ultimately killed it with water intrusion into the oil resulting in a dropped valve....