Re: Carb Kit
I don't think a carb kit will increase from a 6 to 9.9hp. I think the difference is in a different carb AND exhaust ports. If you find out different, let us know! I have a '82 7.5 merc that uses the same engine as the 9.9 and would love to find an easy way to "pump it up".<br /><br />Good luck!