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Set leanrich on DT 140 hp suzuki 1987

john66

New member
does anyone know how to set the lean on 1987 140 suzuki this motor turns to the right to rich. I have tried 1 1/2 as a start point but I get blowback untill I get to 2 1/2 towards lean my heat is ok at this setting and motor runs fine very little smoke but I was told this setting would hurt motor or is my motor not the only thing blowing smoke THANKS
 
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