Patching a Bicycle Tire Inner Tube

Flip the quick release lever on the wheel.

Squeeze the brake arms together and lift the brake cable from the caliper arms.

Hold the wheel to the ground, and pull the bike frame up and away to remove the wheel from the bike.

Press the valve core while applying pressure to the tire to deflate the tire.

Insert the flat part of a tire lever under the tire coping. Apply pressure to the other end of the lever to lift the tire up and out of the wheel.

Slide the lever around the circumference of the wheel to completely remove the tire.

Remove the tube by pushing the valve through the hole in the rim and pulling the tube out from under the tire.

Press the valve core while applying pressure to the tire to deflate the tire.

Insert the flat part of a tire lever under the tire coping. Apply pressure to the other end of the lever to lift the tire up and out of the wheel.

Slide the lever around the circumference of the wheel to completely remove the tire.

Remove the tube by pushing the valve through the hole in the rim and pulling out completely.

Locate the leak by first over inflating the tire.

Place the tire under water and look for bubbles to find the leak.

Mark the hole with a marker, and completely deflate the tire.

Select a patch kit that you will use to patch the hole. Try to pick a patch that is appropriate for the size of the hole.

Clean the area near the hole with soap and water, then dry it thoroughly.

Rough up the area around the hole with an abrasive surface such as sand paper until the area around the leak loses its shine.

Apply rubber cement to an area around the hole that is bigger than the patch to ensure that the patch bonds completely.

Apply the patch to the area.

Apply pressure to the patch until the rubber cement is dry.