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    Replace piston, or just the rings?

    Hi, need some advice. I'm in the process of rebuilding my 1991 Force 90hp and finally got the powerhead down to the pistons. #1 and #2 look good (I think), but #3 looks a little iffy (both piston and cylinder wall) and I would like to hear your thoughts on whether to repair (new rings and...
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    1991 Force 90HP - What Special Tools Are Required?

    Hi All, New to the forum, and about to completely tear down and rebuild a 90HP 1991 Force OB (906F91A) - both the powerhead and lower unit. My question: what 'special tools' are absolutely necessary and why? Some background: compression-tested the cylinders and got 100-70-70. Oil drain on...
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