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Mikuni VM Fuel mixture screws (up close example)

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    Mikuni VM Fuel mixture screws (up close example)

    I have been tearing my carbs apart on my 79' GS 1000 to find all the bad parts that need replacing. Obviously almost every O-ring is either cracked, brittle, or torn. All of my fuel mixture screws have some funky waves in the taper. Hard to see with the naked eye. I can feel the difference by running my fingernail down the taper. So I took this up close shot to show how badly these can be worn on our 30 year old bikes. Enjoy!!


    #2
    They don't suffer from wear that causes anything to go wrong. The problems arise when they get broken and the tips snap off. Plus the worn o rings leak petrol of course.
    79 GS1000S
    79 GS1000S (another one)
    80 GSX750
    80 GS550
    80 CB650 cafe racer
    75 PC50 - the one with OHV and pedals...
    75 TS100 - being ridden (suicidally) by my father

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