Recent content by DSMBoater

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    How to tune dual carb setup

    Hey guys I have a question about my '74 merc 650 3 cylinder that has the dual carb setup. I have read the service manual that explains how to tune the idle mixture screw on the carbs- but one important piece of information is left out. Do I have to use 2 screwdrives and simultaneously turn...
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    '74 Mercury 650 Timing adjustments

    Hey guys, I picked up a '74 merc 650 serial # 3401814. It had been sitting a while so I rebuilt both carbs, fuel pump, new fuel lines, fuel tank, plugs and wires. I also cleaned up the cap and rotor. I do have the Seloc manual for it, but the adjustments for spark are kind of confusing. I...
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    Carburetor Kit

    Hello guys, this is my first post here on the I-boats forum. I possibly could have e-mailed customer assistance to answer this Q, but it's kind of a two-in-one. I have a 1974 Mercury 650 65hp Thunderbolt, and as you know it has the twin carb setup. I want to get these rebuilt and running...
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