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Recent content by Alex007

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    Squeal/Chirping noise from motor?

    My fairly old but excellent running 25hp Mercury has started making an occasional very loud squeal/chirp noise when idiling. Very disconcerting! I thought it was some sort of overheating alarm but there is a good stream of "tell tale" water. Can anybody tell me what this could be and how to...
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    Spark Plug Gap?

    I have recently bought a boat with a really old 25hp Mercury outboard (Probably 1970's) in wonderful condition and runs like a dream. I decided to check the spare spark plugs in the tool kit and they looked like the originals plugs. Old and dirty so I bought a new set. They are NGK 5110 B7HS...
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