Introduction
Square tapered cranks are the most common type found on bikes. It's easy enough to replace the cranks, but a specialist tool know as a crank-extractor is used. Once you have completed the job, be sure to check they securely fastened. A damaged crankset is expensive to replace.
This is a long guide, so you can choose to either watch the entire video above, or follow it in smaller chunks by clicking on the individual steps below.