Introduction
Here's an easy step by step tutorial on removing and replacing the inner tube.
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            Next, wedge tire tool below the bike wheel, right above the rim. 
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            Once firmly in place, push the tire tool down towards the ground in order to create spacing between the tire and the rim. 
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            Following this, grab the 2nd tire tool and place it into the gap you have created. 
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            Slide the 2nd tool around the entire circumference of the tire, while holding the first in place, in order to dislodge the tire from the rim. 
 
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            After removing the bike tire, locate the bike valve used to pump air into the tire. 
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            Gently remove the inner tube starting with the area around the valve. 
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            Make a note of where the hole for the valve is located on the bike rim, because that is where the next step begins. 
 
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            Pump a small amount of air into the new bike tube so that it is easier to work with. 
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            Next, locate the hole in the bike rim and feed the valve through and into position. 
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            Next, wrap the rest of the tubing over the rim comfortably, while making sure that no folds or creases form on the tube. 
 
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            Finish by placing the bike tire back on the the frame, while making sure that no fold or creases form in the tube. 
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            Lastly, pump air into the tire and remount onto bike frame. 
 
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To reassemble your device, follow these instructions.