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  1. #1
    SMLaker's Avatar
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    Aftermarket high/low speed adjusters (t-handle)

    Want to make sure I do this right and see if anyone has done it differently. I am replacing the stock high/low
    speed adjusters on my Mikuni I-body carbs with aftermarket T-handle adjusters and would like to know if folks have used (see pic) parts #9 o-ring and #27 aluminum washers to encapsulate the spring, or if just the needle and spring would be ok. If just the spring, it will go past the threads inside the seat. With the washers and o-ring I suspect it will keep the spring above the internal threads inside the seat. Is this correct? I'm wondering if using the washers and o-ring inhibit the needle from bottoming out before I back them out to 1.5 turns. If you have replaced stock adjusters with t-handles, please share your experience. Thanks
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  2. #2

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    I have rebuilt 7 GPR/XLT 1200 carb sets in the last year and have not seen the #27 washers on any of them, and they were all original and untouched. The o-ring is necessary to seal from air and fuel leaks. The spring bottoms in the hole, and seats on a raised place on the needle.
    If the spring fits over the threads on the needle adjuster, then it CANNOT fit inside the threads in the carb.

  3. #3
    SMLaker's Avatar
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    Quote Originally Posted by LT1GMC View Post
    I have rebuilt 7 GPR/XLT 1200 carb sets in the last year and have not seen the #27 washers on any of them, and they were all original and untouched. The o-ring is necessary to seal from air and fuel leaks. The spring bottoms in the hole, and seats on a raised place on the needle.
    If the spring fits over the threads on the needle adjuster, then it CANNOT fit inside the threads in the carb.
    Thanks, that's what I suspected. The t-handles have an o-ring near the top of the "t" that sits in a
    recessed area of the needle. Should I use another o-ring lower down where the threads on the needle stop?

  4. #4

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    No, the one is all that is needed.

  5. #5
    Moderator OsideBill's Avatar
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    you need the aftermarket ones like Riva sells these will not work wrong style carb
    buy these http://www.4-tecperformance.com/inde...roducts_id=548

  6. #6
    SMLaker's Avatar
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    Quote Originally Posted by OsideBill View Post
    you need the aftermarket ones like Riva sells these will not work wrong style carb
    buy these http://www.4-tecperformance.com/inde...roducts_id=548
    Thanks Bill, I'm using the ones shown in your link RY1220 for both low and high speed.

    http://www.atlanticjetsport.com/inde..._detail&p=3218

  7. #7
    Moderator OsideBill's Avatar
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    They come as a set of six, 3 low, 3 high, that's all you need. then you need the correct springs you are missing item #37 on this page http://www.boats.net/parts/search/Ya...TOR/parts.html

  8. #8
    SMLaker's Avatar
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    Thanks, I plan to re-use the springs that came with the stock high speed adjusters and have ordered 3 new springs from AJS for the low speed adjusters. Q? When using water socks on aftermarket FA's do I need to slightly lean-out the recommended 1.5 high 1.0 low turns out to like 1.25 and .75?

  9. #9
    Moderator OsideBill's Avatar
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    Yes you will need to lean out the screws a bit for water socks.
    and if you ordered the spring from the diagram in the first post, that one is incorrect. you will need to order the one I put in the link earlier in this thread.

  10. #10
    SMLaker's Avatar
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    I ordered #28 from this link. http://www.atlanticjetsport.com/inde..._detail&p=3839
    From what I have read in other posts, they are all the same. Never believe it though.

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