Honda BF9.9A to 15A

Barry359

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Apr 26, 2010
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I have a 1995 BF9.9A and noticed that the throttle has a screw stop on the carb keeping it from opening all the way. If you remove the screw you gain a noticable amount of power. This can't be the only difference between the 9.9 and 15 hp? Does it hurt anything to run with the screw out? What would be the proper way to upgrade to 15hp?

Thanks
Barry
 
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