Grab the bottom of it on the inside, and pull the gasket back. You want to be able to see the metal gasket retainer. You should use the hex head nut screwdriver to do this. Lift the edges of the seal to find the screws underneath that are holding in the plastic liner and door seal. Often, the screws hold in a plastic liner, which in turn clamps the door seal to the door. Once all of the screws are loose, the door seal should easily slide out from behind the plastic liner. Don't be too forceful when doing this step, since some plastic liners can be quite brittle and crumble if you are too rough. Position one of its corners on the top of the refrigerator door. Push the lip of the new gasket over the metal retainer, and slide it behind the metal retainer and around the entire perimeter of the refrigerator door. The best method is to start in the top corners, and work your way around the door. You don’t want to tighten the gasket retainer screws all the way. You want them to be snug. Use a bit of baby powder or talcum powder to prevent sticking. This will help to prevent the door seal from twisting as it meets the metal of the fridge.  You are looking for any warped areas of the gasket. Repeat this process several times. Once the gasket looks like it is properly fitted, tighten the screws more. Alternatively, you can heat the door seal up with a hair dryer to fix the gaps. This softens the door seal and allows you to stretch it.

How would you rephrase that briefly using Indonesian?
Lepaskan gasket lama dari pintu kulkas. Longgarkan sekrup yang merapatkan penahan logam di sekeliling pintu, tetapi jangan sampai lepas sepenuhnya. Tarik gasket keluar pintu sampai lepas setelah sekrup penahannya sudah dilonggarkan. Ambil dan pasang gasket baru. Gunakan obeng hex untuk merapatkan sekrup penahan gasket. Taburkan bubuk. Gosokkan bubuk di sekitar sisi sudut engsel gasket pintu dan tempat segel bergeser. Kalau bedak tidak ampuh mencegah puntiran, ganjal segel dengan obeng saat menutup pintu, dan biarkan tertutup selama satu jam. Tutup pintu kulkas, dan buka beberapa kali untuk memeriksa gasket. Gosokkan petroleum jelly di sepanjang petroleum jelly jika Anda melihat celah.