Evidently the Pitot tube (if in fact that is the type of speedo I have), is located in the lower end of of my Yahama 90 hp outboard, because the speedo stopped working the day I backed into a stump and bent the prop... How do I locate this tube in order to repair it? I mainly use the RPM gauge when boating, but would like for the speedometer to be working in case I decided to sell the boat. lch