[header] How to replace bike pedals [title] Secure your bike on a flat surface. [step] If your bike has a kickstand, rest your bike on it. If your bike doesn't have a kickstand, lean it up against a wall or a table so it stays upright. 
[title] Check the pedals to see what kind of wrench you'll need. [step] Look at the space in between the pedal and the crank arm (the metal arm that your pedals are attached to).