How to Fix a Noisy/Squeaky Bicycle Chain

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Place a piece of cardboard under the bicycle to catch excess cleaner.
Rotate the foot pedal with your hand slowly, and spray WD-40 bicycle chain cleaner evenly throughout the chain.
Only use WD-40 that is specifically made for bicycles. Using normal WD-40 can damage your bicycle chain.
The chemical spray is toxic and very unpleasant to smell. Please use a mask or other means of protection on your face and eyes.

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