I have a need to replace the prop (damaged due to accident) on a 9.9 High Trust <br />(so I am told by a dealer) 4 st. 1986 Yamaha long shaft that I use as a kicker.<br /> It had <br />11 3/4 x 9 1/4 plastic prop; but it seemed to be ventilating when I go pass 1/2 <br />on the throttle. ( or was it laboring with lower RPM than what the engine was<br /> intended for; I am not sure -no RPM gauge). I understand that a lower pitch<br /> (like some refers to is "High Trust") prop would enable the motor to go at <br />or close to its max potential RPM at WOT .<br /><br /> Questions:<br /> -Does anyone know if the prop I had was a High Trust prop?<br /> -If its not, whats the correct Yamaha part number for it? <br />Thanks for your input!<br />ps. Boat = 1982 17ft central console BW, main= 1982 90hp i6 Merc.
