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  1. #1

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    40 hp merc 4 stroke carb setting

    Just wondering if the same technique to setting carbs would also work on my outboard motor, the same as the mukuni carbs on a jet ski. That is to set the main carb to idle and use a feeler gauge to set the others the same?? I think these are mukuni carbs, but I will find out for sure before I do it. This will actually be a bench setting. I'm going to rebuild the carbs myself as the dealer wants $600.00 for the job. thanks, Jerry


  2. #2
    ph2ocraft's Avatar
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    That's how I used to set mine, you can also eyeball the plates for closure. I used to make my final adjustments with mercury sticks, some guys use that cool tool that sits on top the carb opening.

  3. #3

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    Quote Originally Posted by ph2ocraft View Post
    That's how I used to set mine, you can also eyeball the plates for closure. I used to make my final adjustments with mercury sticks, some guys use that cool tool that sits on top the carb opening.
    What are mercury sticks, and the cool tool?? I have a morgan carb tune that I used last summer but it was kind erratic and I couldn't get a good reading. Thanks, Jerry

  4. #4
    ph2ocraft's Avatar
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    Mine are sort of like this, great for balancing the carbs.
    Last edited by ph2ocraft; 01-12-2007 at 08:58 PM.

  5. #5
    Moderator beerdart's Avatar
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    Or that.
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  6. #6
    ph2ocraft's Avatar
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    That's what I use on the watercraft as there are no vacuum fittings on the intakes for the carb sticks.

  7. #7
    I'm feeling naturally aspirated today pirate33's Avatar
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    Quote Originally Posted by beerdart View Post
    Or that.
    I was all into that carb talk-and then I saw that BASS towel-Its Friday night and I think a "Black and Tan" would be just great -to the store I go

  8. #8
    ph2ocraft's Avatar
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    LOL, that's funny, I had a couple of drinks with dinner and am "thirsty" for some ALE myself.

  9. #9
    I'm feeling naturally aspirated today pirate33's Avatar
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    Got back from the store-noticed me and Beer think alike, well sort of

    my ski towel and beer synchronization tool
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