Remove lower door hinge only, and door pops out. Then lay door on floor and remove the screws fastening the inner freezer tray & gasket to the door; this is where the cordless drill w/nut driver attachment is handy as there are 30+ screws to remove and an open freezer with all your food gaining temperature. At this point drop the new gask
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et in the dryer on low heat for 5-10 mins to soften it, regardless of it's condition. Have someone clean the sealing area on the freezer and where you have removed the old gasket on the door while you fit the new gasket in. Renew all rusted screws and smear a little grease on hinge for future protection since the door is off. Remount door and check for leaks, the door should close and seal on it's own WITHOUT pushing. This is where I realised the importance of warming the gasket, I got lucky by passing a blow dryer along the leaking areas with the door closed.
Point: When buying a new freezer look for compression of the gasket which is an indicator of a warped door. My freezer is only 5yrs old and I shouldn't be changing the gasket so soon!
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