Optimus 8R (Russian clone) fountain of fuel- won’t shut off!

Discussion in 'Fettling Forum' started by DCWIexplorer, Jul 13, 2021.

  1. DCWIexplorer

    Offline
    Joined:
    Feb 16, 2013
    Messages:
    7
    Location:
    Door County, Wisconsin
    Hi folks;
    I’ve been working on getting this little baby purring, and I thought I had it cleaned up and ready, including a test burn, until I went to turn it off. It wouldn’t turn off.
    I unscrewed the fuel tank cap to release the pressure, and was able to blow it out.
    But I’m guessing the fuel isn’t supposed to keep coming out.
    How to I fix this, so off is off?
     

    Attached Files:

  2. John Eggert

    Offline
    Joined:
    Nov 18, 2007
    Messages:
    281
    If it's like real 8R's, the gear rack for the cleaning needle and the valve spindle gear must be correctly timed.

    If the cleaning needle rack bottoms in the valve body before the valve stem seats down tightly, the fuel will continue to flow.
     
  3. DCWIexplorer

    Offline
    Joined:
    Feb 16, 2013
    Messages:
    7
    Location:
    Door County, Wisconsin
    Ah. I sorta understand. Thank you, kind sir, for the prompt response!
     
  4. kerophile

    kerophile United Kingdom SotM Winner Subscriber

    Offline
    Joined:
    Sep 23, 2004
    Messages:
    14,341
    Location:
    Far North of Scotland
  5. ulysses

    ulysses Subscriber

    Offline
    Joined:
    Jan 9, 2008
    Messages:
    1,603
    Location:
    Manasquan, New Jersey USA
    When you have it adjusted, it's a good stove. I have two and they are strong runners.
     
  6. Ray123

    Ray123 Subscriber

    Offline
    Joined:
    Mar 18, 2012
    Messages:
    1,240
    Location:
    New Hampshire, USA
    In the picture the cleaning needle is showing through the jet. Is it stuck in that position? Does turning the spindle clockwise lower it at all?
     
  7. Tony Press

    Tony Press Netherlands Subscriber

    Offline
    Joined:
    Jun 8, 2013
    Messages:
    10,858
    Location:
    Stinkpot Bay, Howden, Tasmania, Australia
    If it operates like an Optimus 8R, the control wheel shuts off the fuel flow by being turned fully to the left. Fully to the right pricks the jet. Full fuel flow is around the midway point.

    Tony
     
  8. DCWIexplorer

    Offline
    Joined:
    Feb 16, 2013
    Messages:
    7
    Location:
    Door County, Wisconsin
    Well, I tried adjusting it, and it still won't turn off. I'll try some of the other suggestions here.
    I'm a little confused; is the fuel supposed to be turned off when the needle is all the way elevated, or all the way down?
    Here's a video of the stove in action, and how it won't turn off...
     
  9. snwcmpr

    snwcmpr SotM Winner Subscriber

    Offline
    Joined:
    Nov 16, 2011
    Messages:
    22,077
    Location:
    North Carolina
    "Clockwise to Close"
    As the sticker says, right to turn off.

    Can you remove the cleaning needle from this model of stove? I do not know this clone/copy stove.
    If you can try it without the cleaning needle.

    Be Aware!!!
    Opening the filler cap of a burning stove can result in flame burning you badly. It should be blown out before opening the filler cap.
     
  10. gieorgijewski

    gieorgijewski Subscriber

    Offline
    Joined:
    Apr 19, 2013
    Messages:
    4,301
    1 remove needle and check - is valve properly working
    --------
    if no
    clean valve surface - till valve works properly
    ------
    if yes
    close the valve
    insert needle - to the hole/only insert!
    opening valve count "clicks" /valve rot-needle/ must be 4 clicks
    after 4 click - close valve - needle goes down -
    screw jet
    ---------
    check is valve works properly
     
  11. Tony Press

    Tony Press Netherlands Subscriber

    Offline
    Joined:
    Jun 8, 2013
    Messages:
    10,858
    Location:
    Stinkpot Bay, Howden, Tasmania, Australia
    @DCWIexplorer (@snwcmpr)

    My absolute apologies for giving you incorrect information! I must have been half asleep.

    I should have said:

    If it operates like an Optimus 8R, the control wheel shuts off the fuel flow by being turned fully to the right (that is, needle down). Fully to the left pricks the jet. Full fuel flow is around the midway point.

    Apologies again.

    Tony
     
  12. snwcmpr

    snwcmpr SotM Winner Subscriber

    Offline
    Joined:
    Nov 16, 2011
    Messages:
    22,077
    Location:
    North Carolina
    All good Tony.
     
  13. Tony Press

    Tony Press Netherlands Subscriber

    Offline
    Joined:
    Jun 8, 2013
    Messages:
    10,858
    Location:
    Stinkpot Bay, Howden, Tasmania, Australia
    @snwcmpr

    I’m just annoyed with myself! I suppose that’s much better than being annoyed with someone else. :)

    Cheers

    Tony
     
  14. snwcmpr

    snwcmpr SotM Winner Subscriber

    Offline
    Joined:
    Nov 16, 2011
    Messages:
    22,077
    Location:
    North Carolina
    I would like to think .... as often as I am wrong that I would be more used to it... :)
     
  15. BigScott

    BigScott Subscriber

    Offline
    Joined:
    Oct 12, 2013
    Messages:
    199
    Location:
    Shetland Isles
    Just remember 'righty tighty...lefty loosey'!