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Thread: 86 250SX valve adjustment

  1. #1
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
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    86 250SX valve adjustment

    I feel silly asking this guys, but I don't know how to find the manual for my machine on here even after being here all these years. I need to adjust my valves on my 86 SX and I don't know the specs. I'm assuming I do it when the trike is warmed up as well. Any help?
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

  2. #2
    Join Date
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    Is this a joke?

    http://www.oscarmayer.net/atc/manual...vicemanual.pdf

    Valves are always adjusted cold in case you are serious

    Rob
    Last edited by rdlsz24; 04-03-2012 at 12:45 PM.

  3. #3
    Big Mike's Avatar
    Big Mike is offline Part time collector of phallic shaped objects. Arm chair racerJust too addicted
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    Fabio I got the PDF for the 250sx manual, I will try to email it to you.
    Currently Own:
    1985 ATC 250sx
    1986 ATC 350x
    1986 Polaris Scrambler 250R/ES (P3)

    Projects/Parts machines:
    1980 ATC 185S

    My Feedback Thread: http://www.3wheelerworld.com/showthread.php/124667-Feedback-for-Big-Mike?highlight=Feedback+for+Big+Mike

  4. #4
    Join Date
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    Set the gap cold Fabio..the gap is to compensate for valve expansion with heat. Set it warm and your gap will be way over on cold start..
    Current toys..
    1986 Honda 350X..trail bomb!
    1985 Honda 250SX..my main mudder
    1985 Honda 250ES..Back in Black Trike
    Current non-trike toys:
    1990 Honda TRX300FW
    1995 Seadoo GTX
    1998 Polaris Indy Lite 340(Nearly new looking)
    1998 Polaris Touring 500
    1998 Club Car (electric)

  5. #5
    Big Mike's Avatar
    Big Mike is offline Part time collector of phallic shaped objects. Arm chair racerJust too addicted
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    Click image for larger version. 

Name:	250sx valve specs.JPG 
Views:	111 
Size:	131.0 KB 
ID:	144380

    Here is a picture of the page from the manual. If you need more I can do pictures, the manual is too big to email.
    Currently Own:
    1985 ATC 250sx
    1986 ATC 350x
    1986 Polaris Scrambler 250R/ES (P3)

    Projects/Parts machines:
    1980 ATC 185S

    My Feedback Thread: http://www.3wheelerworld.com/showthread.php/124667-Feedback-for-Big-Mike?highlight=Feedback+for+Big+Mike

  6. #6
    Big Mike's Avatar
    Big Mike is offline Part time collector of phallic shaped objects. Arm chair racerJust too addicted
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    Click image for larger version. 

Name:	250sx valve adjustment.JPG 
Views:	156 
Size:	96.4 KB 
ID:	144381

    Actual valve adjustment page
    Currently Own:
    1985 ATC 250sx
    1986 ATC 350x
    1986 Polaris Scrambler 250R/ES (P3)

    Projects/Parts machines:
    1980 ATC 185S

    My Feedback Thread: http://www.3wheelerworld.com/showthread.php/124667-Feedback-for-Big-Mike?highlight=Feedback+for+Big+Mike

  7. #7
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
    Join Date
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    Thanks to everyone! Job is done! I'm still used to wrenching on pingers for the last few years I guess!
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

  8. #8
    Big Mike's Avatar
    Big Mike is offline Part time collector of phallic shaped objects. Arm chair racerJust too addicted
    Join Date
    May 2010
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    Hanson, MA
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    Want to do mine next? HAHA. Gotta do my sx too.
    Currently Own:
    1985 ATC 250sx
    1986 ATC 350x
    1986 Polaris Scrambler 250R/ES (P3)

    Projects/Parts machines:
    1980 ATC 185S

    My Feedback Thread: http://www.3wheelerworld.com/showthread.php/124667-Feedback-for-Big-Mike?highlight=Feedback+for+Big+Mike

  9. #9
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
    Join Date
    Jun 2008
    Location
    The woods
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    It took 20 minutes Mike, and that was taking my time. I didn't open the hole for the "T" mark, I just found TDC by myself. Plenty of room to get in and out of there.
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

  10. #10
    Join Date
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    Glad you got her done... now, try doing a 350x.......... What a pita.
    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
    Yamaha tri zinger
    Yamaha 4 zinger
    Brap braaaap

    http://www.youtube.com/user/3wheelsoffroad

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