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  • Nuts

    Anyone know what the nut size is that holds the carb to barrel on Challenger MX3 looks like 5/16 whitworth but thread is fine??
    Thanks
    Ray

  • #2
    I think you'll find they are 22TPI which makes them 5/16 BSF.

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    • #3
      Hi Kevin,
      Thanks very much for your help, I will order up some spares.
      Ray

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