human
How do I fix a flat tire on my bicycle?
assistant
The first step to fixing a flat tire on your bicycle is to remove the wheel from the bike. Once that is done, use a tire lever to pry the tire off the wheel. Then take your new tube, inflate it, and fit it over the wheel. Place the tire over the tube and use your hand to press it onto the wheel. Finally, reinstall the wheel onto the bike and inflate the tire to the recommended pressure.