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  1. #21
    Wow this surly has turned into the Carb Tuners dream thread....


  2. #22
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    guys

    i have a set of novis on my ski and it has t handles coming out all over it, well i can count 4 with the pipe on but there may be more.

    would it be possible for someone to post a pic of a set of novi's with some info explaining which t handle is for what and which direction they get turned in or out etc...?

    like i have one near what appears to be the throttle cable, is that the idle screw?

    and the three i see coming out from each carb body, are they the highs?

    and where are the lows hiding, is it possible to get to them without taking the pipe off ?

    I am very new to carb tuning so please excuse my ignorance.

  3. #23
    Moderator beerdart's Avatar
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    The low screws are on the bottom. The High speed screw is on top and closest to the FA. The screw near the cable is for idle.
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  4. #24
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    ahh cheers for that, now if i am standing on the left hand side of my ski looking into the engine bay, which way do i turn the high speed t handles to richen it up, clockwise or anti clockwise?

    i assume its closewise like anything else but i want to be sure before i touch anything.

  5. #25
    Quote Originally Posted by izz0 View Post
    ahh cheers for that, now if i am standing on the left hand side of my ski looking into the engine bay, which way do i turn the high speed t handles to richen it up, clockwise or anti clockwise?

    i assume its closewise like anything else but i want to be sure before i touch anything.
    Counter clockwise to richen, righty tighty to lean it down and lefty loosey to richen it up.

  6. #26
    which t handle is for what and which direction they get turned in or out etc...? I have novi's on my 1300 reipple, the top T-handles are for your top end........The T-handles underneath are for take off, the top now, if you screw them in clockwise, thats leaning the carbs out, turning them counter clockwise richens them up, I do not know the trick to tunning, Ben Herman can help you out if you have any other problems.

  7. #27
    Moderator beerdart's Avatar
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    THANKS RANDY!!!

    Start with the screws set at 1 turn out, and tune with the tachometer for peak Rpm, then stop there and count the number of turns on the high speed screws. Write this down on a piece of paper.. Then turn the high speed screws in all the way and open them to 1/4 turn open. (Now you will be testing starts only, so no more big high rpm trips around the course). You are only turning in the high speeds to allow you to easily tune the low speeds.

    Now check the low speed screws and set them at 1 turn and do a practice start; To test the low speed setting pretend that you just jumped the start and you have to start with no holder. Hold the ski by yourself and hold as many Rpm as you can (don't blow it out first for testing) and then nail the throttle hard.... NO FARTHER THAN 50 FEET, as you are only testing the start response

    If it blubbers like a schoolgirl trying to guzzle a quart of beer, then it's too rich on the low speed screws..
    If it falls flat on the line (like someone punched you in the stomach).. It's too lean on the low speed screws.

    When you like the acceleration off the line, stop there and count the number of turns on the low speed screws. Write this down on a piece of paper.. Then re-set your high speed screw where they show the best peak Rpm earlier and try both a start and a peak Rpm run...
    It will probably "blubber" a little off the line... DO NOT turn in the low speed screws... Instead, go back out on the course and fine tune for peak Rpm again.. The blubbering off the line is caused by having too much fuel in the high speed circuit... Write down your new high speed setting on the piece of paper along with the best low speed setting that you found earlier, this will be your base-line carburetor settings.
    If the high or low speed screws are open more than 11/4 turns, then you need to swap to the next bigger jet.
    If the high or low speed screws are closed all the way, then you need to change to the next size smaller jet.

  8. #28
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    sweet now i am getting somehwere, thanks guys

  9. #29
    Moderator OsideBill's Avatar
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    Word of wisdom when adjusting screws, When backing them out always go past what you want, then turn back in to your setting.

  10. #30

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    heres a photo from the PDF explaining the different levels


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