Owners of Yamaha F225 outboard engines have been seeing severe corrosion issues leading to expensive repairs. The exhaust tube and oil pan are the parts most likely to fail but damage to other parts, including internal parts, has been reported. Severe corrosion issues are being reported by owners after as little as 450 hours with the majority of problems occurring after 500-700 hours of use. Yamaha is fixing the corrosion on any engine brought in that is still under warranty, but since most boat owners use their boats less than 100 hours a year, the corrosion issues do not become an issue until most engines are out of warranty. Yamaha contends that proper flushing will prevent corrosion problems. However, owners report their F225 outboards are showing severe corrosion even with proper flushing and maintenance. Owners of Yamaha F225 outboard engines whose motors are out of warranty and are showing severe corrosion should consult with a consumer protection attorney in order to recover losses.
It has been alleged that the corrosion, pitting and consequent engine failure typically occurs after only 500 to 700 hours of use. Because recreational boaters will typically use these engines for less than 100 hours per year, it is likely that the engine will fail after Yamaha’s three-year extended warranty has expired. If damage is found early enough, it may be possible to replace only the damaged exhaust pieces. If the corrosion is too advanced, engine replacement may be the only option. If you have any experience, positive or negative, with Yamaha, or with the corroded dryexhaust sections on your Yamaha 225, please report it to BoatUS Consumer Protection.
Corrosion is an unpleasant fact in the marine environment. While saltwater is particularly harsh, even operation in fresh water environments can cause corrosion. Stray electrical currents in the water around docks can increase the risk of corrosion. For that reason, your Yamaha limited warranty does not cover corrosion.
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