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  1. W

    Compression on 1988 Yamaha 90

    Owner did a compression check, and readings came in 110-115 psi on all three cyls. Is this below, avg, or above what a motor of this age shld have. This board is great, thanks for your help.
  2. W

    replacing tilt/trim seals Yamaha 90

    They are slowly leaking. How much should one expect to fix this problem?. Any guidance in appreciated.
  3. W

    1988 Yamaha 90

    I am looking at an Aquasport 170 with an 88 Yammy 90hp. This is my first boat (for me and my 2 boys). I did a visual inspection. I know nothing about outboards. What should the compression readings being on this motor (owner says hours are 300-400 hrs). What other problem areas should I be...
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