Primus / Optimus 1550 Cleaning Needle Question

Discussion in 'Fettling Forum' started by AntWhiteMan, Jan 24, 2023.

  1. AntWhiteMan

    AntWhiteMan United Kingdom Subscriber

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    Hello

    So close, I can smell the Kerosene!!

    Just fitted a new-to-me vapouriser for a Primus/Optimus 1550.
    All good . ( Kindly supplied by the excellent Tilleyman in the UK)

    Then I've pumped air into it dry and find I have a tiny leak through the vapouriser jet.
    The cleaning needle is desperately close to blocking /doing its job as, at full extension, the needle will alter the flow of air...So I know its very close.

    Question . What are my options please?
    One thought I've had is to unscrew the needle slightly to extend its reach. Is that a thing?

    Any other suggestions, greatly received.

    BTW.. It is the correct needle and jet.


    Thanks again


    AW
     
  2. podbros

    podbros United Kingdom Subscriber

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    @AntWhiteMan

    It’s not the needle that cuts off the fuel.. There’s a seal often called a foot valve in the tank.. have you changed any seals?

    I wouldn’t adjust the needle just yet .. it needs to be out of the way when the lantern is working and not interfering with the fuel flow.

    there is a great thread by @presscall
    Search for Primus 1550 1970’s in the search bar, top right .. good pics of what it looks like

    it won’t stop it working.. you can switch off by undoing the pressure release.. try a light up without a mantle first
     
    Last edited: Jan 24, 2023
  3. Henry Plews

    Henry Plews Subscriber

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