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Thread: 1985 250SX carburator Question

  1. 05-11-2012, 06:29 PM #1
    sp8twn's Avatar
    sp8twn
    sp8twn is offline Roostin' Away Arm chair racerRoostin Away
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    1985 250SX carburator Question

    My brother just pick up a 85 SX he hasent got it running yet,,, took the carb apart today and notice that this screw was broken off!!! So he calls his little brother to ask what is that screw?????? i was thinking the air screw,, but not sure??? i dont know anything about SX carbs It's hard to say when you live 500miles away!!!LOL!!! ,,,,,told him i would ask around!!!! here's wat he sent me!!!Click image for larger version.  Name: carbu2.jpg  Views: 22  Size: 82.7 KB  ID: 146739 Thanks
    Last edited by sp8twn; 05-11-2012 at 08:29 PM.
    1986 Honda 350X
    1985 Yamaha Tri-Z 250
    2006 Honda TRX400ex,,,(YA! YA!,,,,,I KNOW IT'S ONE OF THEM 4 WHEEL THINGS!!!!!)

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  2. 05-11-2012, 07:31 PM #2
    ZacH_GrifF's Avatar
    ZacH_GrifF
    ZacH_GrifF is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Yep thatd be the air/fuel screw.
    1. 83 185s: (the money pit) xr200 cam, 200cc cylinder, 10.25:1 piston, 83 250r front end, 450r hubs, full suspension
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  3. 05-11-2012, 07:52 PM #3
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    shortline10
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    Thats the air fuel mix screw but its not broken off in your pic thats the way its supposed to look .
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  4. 05-11-2012, 07:57 PM #4
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    Jason125m
    Jason125m is offline Power User Got the holeshot
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    Thats the air/fuel screw as stated above. Also it doesn't look broken, but i'm sure he just sent you a general 250sx carb picture to show you the screw.
    Anywho, he should be fine running it like that, aslong as he isnt doing any upgrades, such as a pipe, etc. Should be in the stock position, and should run just fine as soon as the carbs cleaned.

    The one on my 350x snapped when i tried to turn it, i guess sitting in a shed for 15 years does that to a poor lil brass screw.
    1985 Honda 250r x2
    1986 Honda 250r
    1986 Honda 250sx
    1985 Honda 250sx x2
    1985 Honda 350x x2
    1986 Honda 350x
    1984 Honda 125m x4
    1983 Honda atc 70 w/ Lifan 125
    1984 Honda atc 70
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  5. 05-11-2012, 08:47 PM #5
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    badass350x
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    Ask Fabio he loves to work on those carbs!!!


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