How can i loosen my crank arms on my B.M.X. bike with out loosning my chain wheel?

Zack

New member
Hi i'm trying to ride my bike as much as possible but my crank arms have to be to tight. I have recently discover my cranks feel like I tightened my chain to tight but i took my chain off and my cranks were to tight. When i went to loosen them just a little bit my chain wheel started to wobble. I can not find the proper way off doing this please can you help me.
 
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