Every cyclist should learn how to repair a puncture so that if needed, they can repair a puncture within minutes so that you can continue on your cycling journey. The following guide will show you how to repair a punctured inner tube on either a road or mountain bike.
Closely inspect the tread to find the cause of the puncture paying attention to the sidewalls to make sure there is no tears or holes.
Let the air out of tube and push the valve up into the tyre and then unscrew while retaining the valve lock ring if fitted. Opposite the valve on the side of the wheel use a tyre lever and a further tyre lever roughly 5cm away.
Pull the nearer tyre lever towards you, lifting the tyre beam over the edge of the rim. Continue until the bead of the tyre has come completely apart from the rim.
Inflate the inner tube and listen for air escaping or if you are unable to hear an escape of air run the tube through a large bowl of water looking for bubbles.
Select a patch that is appropriate for the size of the puncture and within a puncture repair kit you will typically get a piece of sand paper to flatten out any mould markings on the tube to allow the patch to site flat.
Firmly press down on the patch over the hole. The surface will need to be clean and free from any dust that would prevent the patch from sticking.
After you have repaired the inner tube inflate the tube and re-fit it to the tyre by putting the valve through first sliding your thumbs to lift the tyres bead over the rim.
Once the above steps have been applied your tyre should be repaired and ready to be re-used. Follow the same steps if an additional puncture occurs however, if the damage is too significant then you will need to replace the tube.
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