I hate to be such a pain in the A** but can anyone tell me how to remove the side covers around the tank. I know the lower covers just pop on and off, but the upper covers have a fastener that looks like it should just pull out, but after trying pretty hard it didn’t release. I don’t want to break something, so how about a clue.

I want to give the machine a good clean up, and need to get these covers off.

Thanks in advance…