Like anything else, it depends. I rather have an 04' with 1500 hours than 100 hours. But, specifically, the 2004 Yamaha 225 hp block was one of the years with the dry exhaust corrosion issue. I would see if that motor was definitely in that line, and if so see if the owner had the exhaust replaced already. If not I would not even think of purchasing it without that price negotiated in. The exhaust rebuild for the motor is around $3,500 (corrected, thought it was $1,600) from what I remember. You can have a mechanic check it after that and it would probably be worth the money. You could also get a pressure gauge to test the cylinders yourself, it is very easy. Of course that only checks one thing.
I just repowered my boat but mainly because I take long trips like this past weekend, 90 miles from home and 220 miles overall. But the motors I had before were 2001 Yamaha HPDI 200's and I sold them with 1,000 hours and they are still running strong 2 years later. If they have 1,500 hours and were maintained every year I don't think it would be too bad. Outside of the corrosion issue I think that motor was a good block for Yamaha. Depends how you plan on using it too. If you are going to put 200 hours a year like I do then you may want something with less hours unless you will be ready to repower in a few years.
Last edited by castronova
on August 15th, 2017, 12:32 pm, edited 1 time in total.