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Help Does the 1990 Yamaha FZR 250 3LN3 have a fuel petcock ?

Discussion in 'Yamaha 250cc In-Line 4's' started by Amara, May 8, 2019.

  1. Amara

    Amara Member Premium Member

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    I can't find a fuel petcock anywhere on my 1990 Yamaha FZR 250 3LN3. Is this year model 3LN3 supposed to have one ?

    IMG_20190508_170349.jpg IMG_20190508_170433.jpg
     
  2. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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  3. Amara

    Amara Member Premium Member

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    Could that red mounting bracket in your pictures be the same as the empty bracket to the right of the fairing bolt in my my first picture ?
     
  4. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    Yes sir :thumb_ups:


    3LN Fuel System.jpg
     
  5. Amara

    Amara Member Premium Member

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    I want to say that one of the previous owners deleted it because the bike runs fine without the fuel petcock and it was missing when I bought the bike last month
     
  6. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    The petcock gives u a 'reserve' option .... thats why theres 2 different filters inside the tank with 2 outlets .... and obviously the fuel flow can be turned off

    When I remove my tank I take off the petcock as well so the fuel is still closed off ... and when u own an FZR u take off the tank many ,many, many times to get at the carbys :aggressive:
     
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  7. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    To say nothing of trashing your engine when one of your float needles leaks, bike suffers hydraulic lock and a bends a conrod.
     
  8. Amara

    Amara Member Premium Member

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    I had an FZX 250 Zeal as my first bike, so I know what I'm looking for. But could it be possible to delete the fuel petcock ?
     
  9. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Yeah it's possible to do, someone did it to your 3LN3
    I've had my tank off way too many time's as well
     
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  10. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    Have u looked under the tank? ... there may be one like this as these are much easier to buy new

    Gas-Fuel-Petrol-Tank-Petcock-Valve-Switch-Tap-for-Yamaha-FZR600-FZR-600-ATV-Quad-Pit.jpg_q50.jpg
     
  11. Amara

    Amara Member Premium Member

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    That's good to know
     
  12. Amara

    Amara Member Premium Member

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    I've looked everywhere
     
  13. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    The fuel tap grey pictured will be right up under the tank, follow the fuel line from the fuel filter up to the tank and see what is there


    The tank normally has a pick up like the one in the bottom/middle of my picture, it has 2 cylinder plastic filter's in the middle 2x holes.
    3LN1 fuel tap on the right top, and 3LN3 on the top left

    20190508_222458.jpg
     
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  14. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    I reckon it may be up under the tank like the petcock @GreyImport posted
    as the ad for it mentions it has new fuel lines and petcock.
     
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  15. ALLSTAHR

    ALLSTAHR Member

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    Silly question but does anyone know how the hoses should be connected to the petcock from fuel tank. Noob question i know but i i just got myself a Yammy:crazypilot:
     
  16. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    What model fuel tap?
    Post #4 above show's how they should be connected


    The chrome front tap i posted above the main line is the top one, the reserve is the 2nd one down and outlet is the bottom.
    It has it in the casting on the back
     
    Last edited: May 11, 2019
  17. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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  18. Andych

    Andych Well-Known Member Premium Member

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    I must measure the O rings etc on my petcock for the SRX and see if the seals from the FZR will fit... it really needs to have some green in it...
     
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  19. Amara

    Amara Member Premium Member

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    I found the fuel petcock on my bike. It's been put directly under the fuel tank, where i can't get to it. It looks to be attached to the bottom of the tank
     
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  20. Amara

    Amara Member Premium Member

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    So this is where the fuel tap is in my bike. looks like it's mounted on the bottom of the tank where I can't get to it IMG_20190609_120951.jpg
     

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