The MX8 Pool Cleaner Side Cover is attached to the unit with three screws; these must be removed before it can be extracted.
We will be removing the screw on the inside of the cleaner first. This is located at the top of the panel. After removing this screw put it in a cup marking where in the cleaner you removed it from. This particular screw is of a different length and thread type than the other screws on the cleaner.
To pop out the side panel you will want to grip the top inside of the panel with your left hand and with your right hand pull out the bottom tab from which you had removed the last screw. This step's picture displays how your hands should be positioned. As you are pulling out the tab lift the panel up and out.
To assemble the new pieces of the side panel you will need to align the two screw supports on the gearbox with the screw holes on the outer gray shell. These two parts should pop snugly into place, if done right there should no wiggle of shift between the pieces.