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  1. W

    passing 15hp up to 20hp

    Hi all, im sure this has been asked before, but I couldn't find it in any searches so Im gonna throw it out there again. I have a 2006 15hp 4 stroke serial# 1b351432 that I would like to get a few more ponies out of. Ive heard that the 15 and 20 use the same powerhead and the only difference is...
  2. W

    Mercury 9.9 2 stroke 3 blade vs 4 blade

    Hi I'm new to the site and have a question regarding prop selection for my merc 9.9. I recently purchased a Tracker Grizzly 1448 all weld. I put a 1993 mercury 9.9 2 stroke on it for now, saving for a 15hp 4 stroke. I took it out today and was very disappointed in its performance. I could barely...
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