I have a Magic Chef refrigerator model #RB150TV. The freezer temperature control knob is broken. I have a new knob but I'm not sure how to remove and replace the broken knob. Any help would be appreciated.

Maytag RB150TV Parts List (http://www.easyapplianceparts.com/ModelFrames.aspx?ModelID=274171&ModelNum=RB150TV&mfgModelNum=&ManufactureID=1&Selected=37704&Position=1&mfg=Maytag&Type=&Mark=1) This says Maytag but I entered correct Model -- Made by Maytag?

Fresh food compartment

Item #10 and #12 are the control knobs -- look like they have screw in center