Re: late ’80’s 9.9/15 flat plastic top carburetor

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June 19, 2018 at 9:32 pm #78189
DAN ANDERSON
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    I give this a shot, but I not positive on this answer. The top has a lot of different parts (improvements?, needles for 10 & 14hp as well as 9.9 &15hp). That explains part of its $124 price. Still pretty high for CPS part. Look at the tech info on MarineEngine.com
    The reason the sleeves are there is for tuning. The same top is used on the 5 thru 8hp motor. Notice the sleeves are different on those motors. Easier (cheaper for OMC/BRP) to change sleeves than make different tops. I’m pretty sure that’s the reason. Fleetwin would be a better source. Hope he comes back soon!

    Dan in TN