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  1. Unscrew the big silver ring, turn around the valve core and reassemble. Then use the smaller hole on your bike pump.

  2. TangeloImpossible686 on

    It’s a bicycle camera. Try to find AT cameras. You also need a special pump for them.

  3. Up side down dunlop valve(unscrew and flip that top peace) . Inflate with presta tip and don’t unscrew anything. Sometimes it doesn’t want to inflate right away – give a stronger pump and it will flow.

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