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40 hp merc. with loud knocking in top, #1 cylinder.

Thread starter Kaw_motocross
Start date Jun 7, 2008

Kaw_motocross

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Thread starter

Jun 7, 2008

I have a 98' mercury 40hp. outboard, it has very low hours and recently it has started a loud knocking noise, in the top cylinder. I think it might be a bearing , any one have any ideas? Thanks

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