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How to clean a bicycle chain
Secure your bike.
A kickstand won't likely be good enough to hold your bike in place while you're working on it. A jostle or a bump could knock your bike on the ground and cause damage.
You should use a bike stand that securely holds your bike, or you can set your bike upside down on the ground so it rests on the seat and handlebars. Having your bike oriented wheels upward is a definite bonus.