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115 Mercury Outboard Powerhead Pull and Teardown - Why Does it Knock?
This Mercury 115 HP, 4 cylinder, 2 stroke engine has developed a very audible knock that seems the worst at idle. The engine runs fine otherwise and has been running like this for a while, except that the noise is increasing. Diagnostic work has been done to rule out as much as possible, so the time has come to remove the powerhead and ...
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