How can I tighten the pedal crank on my bike?

To tighten the pedal crank on your bike, you will need a pedal wrench or a hex key. First, remove the pedal from the crank arm by turning it counterclockwise. Then, use the wrench or hex key to tighten the bolt on the crank arm where the pedal attaches. Make sure it is securely tightened before reattaching the pedal by turning it clockwise.