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Correct gas cap gaskets needed for 1973 TX650

Discussion in 'The Garage' started by velocejoe, Feb 10, 2019.

  1. velocejoe

    velocejoe XS650 Member

    I replied in a thread I started over the seat foam which is a one year only.....but figured I would start a new thread for the gas cap gaskets.

    My 1973 TX650 is in need of the gas cap gaskets, the one "long" o-ring type thing and the one that goes around the metal disc that touches the tank. I am assuming the 1973 is a ONE YEAR ONLY gas cap...just like the seat. I cannot tell if the 1972 TX650 has the same gas cap or not.

    DogBunny posted the TX650 specific parts manual showing the correct seat with part numbers. He also posted along with it the fuel tank section....but part numbers not included. I would love a link or a pdf if someone has it of the TX650 specific parts manual. Tired of banging my head against the wall every time I need something.
     
    Paul Sutton likes this.
  2. velocejoe

    velocejoe XS650 Member

    AWESOME AWESOME AWESOME!!!!
     
    Paul Sutton and TwoManyXS1Bs like this.
  3. GLJ

    GLJ Ran through life like my hair was on fire 650 time Top Contributor

    TwoManyXS1Bs likes this.
  4. TwoManyXS1Bs

    TwoManyXS1Bs BBQ Hunter Top Contributor

    Last edited: Feb 10, 2019
    Paul Sutton and GLJ like this.
  5. velocejoe

    velocejoe XS650 Member

    Those won't work on my 73 I don't think. Looks like I might be missing some parts to my gas cap??? gas cap1.JPG gas cap2.JPG
     

    Attached Files:

    Paul Sutton likes this.
  6. velocejoe

    velocejoe XS650 Member

    I ordered the KDI Reproduction kit once I found the correct part numbers. I've done some CT3 and LT2 caps before....seems like I remember more parts to the cap and parts manual shows more as well.
     
  7. velocejoe

    velocejoe XS650 Member

    Heres a close up of last pic gas cap3.JPG
     
  8. GLJ

    GLJ Ran through life like my hair was on fire 650 time Top Contributor

    Contact the guy. Explain to him what you have.
     
    Paul Sutton likes this.
  9. DogBunny

    DogBunny Motorcychologist

    There is a huge lip that is supposed to be on the underside of the gasket in your pics that is missing, but the cap works without, and your cap is otherwise complete.
    What really matters is the part of the gasket that contacts the neck on the tank, and that part on the gasket in your pictures is in perfectly usable condition, and will probably out-last the reproduction that you just ordered from eBay.
     
    Paul Sutton and gggGary like this.
  10. velocejoe

    velocejoe XS650 Member

    That existing gasket on my cap is hard as a brick. Gas stains on tank from previous owner. The cap does not seem to shut down very tight....I'm afraid it will leak, even with new gaskets. That "lip" you are talking about is for the 1974 versions. I believe there is a whole "nother" disc that goes on top of the base disc that helps push the whole assy down onto the tank flange. I might just be able to get a thicker gasket/O-ring and get it sealed up that way.
     
  11. velocejoe

    velocejoe XS650 Member

    I contacted the guy who sells the complete caps on ebay (though he is out).....sent him pics. His response "I'm not familiar with that kind of cap. Good luck."
     
  12. velocejoe

    velocejoe XS650 Member

    Anyone willing to take there 1973 cap apart and post pics of what all it's supposed to have?
     
    Paul Sutton likes this.
  13. velocejoe

    velocejoe XS650 Member

    Just want to at least have a basis on what I have vs what I'm supposed to have. Man, these one year only bikes can get the best of you. 3 hours of research so far just on the cap.
     
  14. velocejoe

    velocejoe XS650 Member

    A good 5-7 hrs researching and building replacement seat foam :(
     
    gggGary likes this.
  15. DogBunny

    DogBunny Motorcychologist

    You might be right about your old gasket being hard and leaking. But 1973-1975 caps are all the same. You aren't missing anything, just the big, non-critical lip I mentioned.
    The thumbnail below has the part numbers for that 1973 seat diagram that included the gas cap that I posted in your seat thread. You should find that the parts and numbers are identical to the 1974 Partzilla diagram link that I provided.
     

    Attached Files:

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  16. 650Skull

    650Skull Dogonit Top Contributor

    73-75 TX/XS650........73-75 TX/XS500..........73-74 TX750 all have the same gas caps.........

    I'm sure the 73-75 RD250/350 Gas caps are the same as well

    74 TXA-75XSB Parts manual102.jpg 74 TXA-75XSB Parts manual103.jpg 74 TXA-75XSB Parts manual105.jpg
     
    Paul Sutton likes this.
  17. 650Skull

    650Skull Dogonit Top Contributor

    TwoManyXS1Bs and Paul Sutton like this.
  18. joebgd

    joebgd XS650 Addict

    228
    32
    28
    NY
    You can get gasket material and make your own.
     
    TwoManyXS1Bs likes this.
  19. velocejoe

    velocejoe XS650 Member

    I ordered the Viton orings. Going to give that a shot. I'm also going to try them as exhaust gaskets on another bike I have!! They are rated to 500 degrees.
     

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