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  1. #1

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    fuel line restrictor

    Any one know where I can get a return line fuel restrictor, or what I can use for one? My 1993 750 polaris has new fuel lines from previous owner but the restrictor is nowhere to be found.


  2. #2

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    does this work?

    CrazyA says "
    Simple Return Line Restrictor
    This is probably the easiest and best way to make one, or redo one that gets thrown out by accident on the older models where they are in the fuel line.

    1) 1/4" hose barb splicer (I like the brass, but it will work on all three of these examples)

    2) 5 X .75 Tap

    3) Mikuni main jet of appropiate size" will this work?

    The link is,
    http://www.greenhulk.net/forums/show...or+size&page=2

  3. #3

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    hmmm

    Does the 1993 750 even have a fuel line restrictor?

  4. #4
    Connecticut
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    CT.
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    New batch of restrictors

    For those needing restrictors, I made some more of them and they're ready to go. I made them in 2 different versions.

    Straight inline barb connector threaded for the Mikuni Super BN main jets, and a "tee" version for those who might want a permanent fuel pressure port, also pre-threaded for the Mikuni Super BN main jets. This version comes with a rubber push cap and ziptie.

    Both versions come with 1 main jet of your choice, a #60 OR a #90.

    I really only do this to help others who need one and might not want to hunt down the main jet tap. I'm not looking to make any profit, but believe it or not, I need to get about $15 each to cover them WITH shipping to your door in the lower 48.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by CrazyA; 12-18-2010 at 04:54 AM.

  5. #5
    Click my Avatar for signature links, Polaris info
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    VERY nicely done

    I like the way you did the Tee version - very slick

  6. #6

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    Very cool , I've spent more than that chasing parts/ tools.

  7. #7

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    Nice CrazyA

    I can appreciate the work you did, but I don't think I need one. The 1993 750 SL starts fine and runs fine on land. I haven't had it in the water yet but the throttle response is crisp without a load on it. I read they help boost the carb pressure from 1-2 pounds to around 4 pounds and I don't know much about the settings so if I am wrong or they will help I will definitely get one of of you, can you advise?

  8. #8
    Click my Avatar for signature links, Polaris info
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    Quote Originally Posted by Frozen View Post
    I can appreciate the work you did, but I don't think I need one.

    The 1993 750 SL starts fine and runs fine on land.

    I haven't had it in the water yet but the throttle response is crisp without a load on it.

    I read they help boost the carb pressure from 1-2 pounds to around 4 pounds and I don't know much about the settings so if I am wrong or they will help I will definitely get one of of you, can you advise?
    You MUST have a flow restrictor in the fuel return line. It is not optional.

    If your carb doesn't have an internal restrictor (which the 1993 carbs didn't), then you must have one in the return fuel line.

    Without the restrictor, as you apply throttle in the water and the engine works against the water load, the carbs will starve for fuel. The engine will run lean due to low fuel pressure, and you risk piston damage.

    The engine will also run poorly, and will be impossible to tune properly.

    Your carbs are designed to work properly with the correct fuel pressure provided by the restrictor. It is there for a reason.

  9. #9

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    ok so I need one

    I was going by these two threads, so I wasn't sure at all. I figured there must be some difference between 1993 and 1994 carbs as the setting on the highs are so different from each year.
    http://greenhulk.net/forums/showthre...trictor&page=2

    http://greenhulk.net/forums/showthre...ndy+restrictor

    So thanks for the info could you send them to Canada USPS at what ever the extra cost is?

  10. #10
    I wan to make a fuel line restrictor, but I can't find the tap your talking about...5x.75...is that the correct size?

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