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A short video on how to reattach and tighten a bicycle crank arm. The video shows the consequences of buying a very cheap second hand bicycle: a loose or detached crank arm and damaged bicycle crank internals.
Two tips: 1) It's important to checkout a bicycle properly when you buy it secondhand and if you're not sure you're up to the task to take a friend with you who is. 2) For buying a bicycle in the Netherlands one could say that it's interesting to look at the cheap Chinese imported bicycles. The price of these might be less then buying a "bad" secondhand one and keep on having it fixed by a professional.
Warning: Your personal safety is your own responsibility! This video has been produced for informative purposes only, you have been warned and no warranty is given or implied!
Tools used: 14 mm socket and a large ratchet.