guys i just can't figure this out. i need to replace the prop on my yamaha. it has these numbers on it. y-2 g 14. i'm guessing that 14 is the pitch. what is y-2 and g? I know i can measure, but my props a three blade so it's hard for me to tell the exact diameter. my owner's manual isn't much help by the way. i just know the diamter is about 10 inches. but i don't want "about" to mess me up.