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Mikuni HSR42 choke question

Discussion in 'Motorcycle Tech Talk' started by goliath, Dec 15, 2010.

  1. goliath

    goliath New Member

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    How can i adjust the choke on my Mikuni to prevent the choke knob from sliding back in. I don't have the HD thumb wheel to tighten the choke cable, there must be an adjustment somewhere that will tight the cable so that it will not just release on it's own.
    goliath, Dec 15, 2010
    #1
  3. JohnnyBiker

    JohnnyBiker Well-Known Member

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    hold it???
    JohnnyBiker, Dec 15, 2010
    #2
  4. chucktx

    chucktx Moderator Staff Member

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    the locking thumb ring is the only adjustment on the choke cable. i have used an alligator clip to hold while warming up.....worked ok, not great, but ok......
    chucktx, Dec 15, 2010
    #3
  5. kenfuzed

    kenfuzed Administrator Staff Member

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    Right, +1 what Chuck said. That little plastic thumb nut (for lack of a better name) compresses a collet around the cable. If it or the collet has worn your only other option is to replace the cable.
    kenfuzed, Dec 15, 2010
    #4
  6. goliath

    goliath New Member

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    The choke cable did not come with the "collet" aka the HD choke cable style.

    There must be a way to adjust it. thx for the replies just the same.
    goliath, Dec 16, 2010
    #5
  7. chucktx

    chucktx Moderator Staff Member

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    if you find a way to "adjust" it.......please post it up.....thanks!
    chucktx, Dec 16, 2010
    #6
  8. Lucifer

    Lucifer Well-Known Member

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    Lucifer, Dec 18, 2010
    #7
  9. hotroadking

    hotroadking Super Moderator Staff Member

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    choke cable is about $10 at HD, a CV carb choke cable should fit the Micky Rooney carb.

    Take the carb or current cable off and take it in, you might just have to change end fitting
    hotroadking, Dec 18, 2010
    #8
  10. Lucifer

    Lucifer Well-Known Member

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    You must have the Mikuni cable.... the adjustment on the Mik cable is only for doing free play,there is a detent in the cable that holds it out,it must be worn on yours if it won't stay out. If you switch to the HD cable you have to swap the HD plunger to the Mikuni one.
    Lucifer, Dec 19, 2010
    #9
  11. chucktx

    chucktx Moderator Staff Member

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    agreed!
    chucktx, Dec 19, 2010
    #10
  12. SkyKing

    SkyKing New Member

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    I've found that if you lubricate the choke cable it will not stay out. Might try spraying it with some brake cleaner to degrease.
    SkyKing, Dec 29, 2010
    #11
  13. chucktx

    chucktx Moderator Staff Member

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    that may work temporarily....may freeze up after a while tho??
    chucktx, Dec 29, 2010
    #12

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