Its a 1995 Yamaha 55 2 stroke. model number C55TLRT. I don't have an owners manual for the motor (bought it used with the boat) but need to find the manufactures recommended RPMs. I've searched and had no real luck. I also don't have a tach so I'm not even sure what RPMs I'm running as is. (I need a replacement prop is why I need the RPMs) Also if anyone knows the gear ratio that would be great to know as well. I assume its a 1:1 but i really don't know anything about outboards so I can't even make an educated guess.
