Vibration from a NEW 250 four stroker

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I started out with the black Yamaha prop 14 1/2 17 pitch defiantly not the prop for this boat and was getting vibration around 4000 rpm. I called Parker and they indicated that the 19 pitch was the prop shipped with this boat

But ! but! I have a 17 pitch.... No it was sent with a 19 pitch Had a little talk with the dealer who was pointing the finger back at Parker.

In the mist of all this I bought a Michigan Wheel prop 151/2- 17 pitch BIG mistake ...Then upgraded to a powertech prop 4 blader 17 pitch Good prop for me foward but no reverse boat would not back up.... went to a merc Thunder bolt 15 1/2 17 pitch which I though was the pitch for this boat which info I had got from the dealer. Vibration but at 4300rpm getting better not as bad. Now I have a ss Yamaha prop 15 1/4 19 pitch. Top rpm all trimmed right is around 5900/6000 rpm with a full load of fuel Vibration no where near like the past props. GrouperJim gave me a idea to go and have this high speed balanced..which I probably will ....


If some of these words look funney is that my fingers and these keys don't seem to work together
Just BeClaus
 
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