Yamaha OX66 225s- Tell me everything

[spareparts]

look near the back of the prop hub, right where it flares out, if they are Yamaha Props(looks like it), it will have something like 17M embossed in the prop. Do what Ferm said, pull them both and carry them to a reputable prop shop and have them checked

[THEFERMANATOR]

I can tell from the pics that the starboard prop has a good bit more cup to it. The cupping is one of the 1st parts to wear off, and can make or break how some props perform. Those aren't quite a semi-cleaver blade as they're rounded instead of squared, but I would say they look like Yamaha props as they use blades with a semi cleaver design alot as they allow the boat to plane easier and give better low end performance. They also lift the stern really well which is the main reason they perform so well down low. That blade design NEEDS a good cup to the blade tip or else they blow out.