Disconnect the brake and take the wheel off using the wrench
There's nothing worse than a flat tire. Luckily, replacing a bike tire tube is easier than you think.
Lean the bike up against something stable.
Empty it right out.
It should come off pretty easily.
Flipping the rest of the bead outside the rim.
Use the abrasive pad to smooth out the rough surface of the hole.
Let it dry for 30 seconds.
Leave for about 30 seconds.
This is to make sure there's nothing that may puncture the tire.
Begin to gently place the tube back inside the tire.
Ensure the tube isn't caught in the bead or the rim.