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4HP Mercurymix ratio

  • Thread starter Dave Chamberlain
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D

Dave Chamberlain

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I have a 4HP mercury that smo

I have a 4HP mercury that smokes excessively..any ideas on the correct fuel/oil ratio and year.??. serial # A950622
 
The correct oil mixture for t

The correct oil mixture for the 4 hp mecury is 50:1. However I have been mixing mine at about 40:1 and have had no problems. A mix of 25:1 will definetly cause your motor to smoke.
 
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