Using this oven door hinge is quite easy. First, identify whether you need to install it on the right or left side of the oven. Since it can be used for both, just match the 'D' stamped on the side of the lower arm according to your oven's setup. For mounting, use the recessed threaded hole at the top of the front and insert the self - tapping screw in the bottom. When installing, make sure the hinge is firmly attached to avoid any loose movement. As for maintenance, keep the hinge clean. You can use a mild cleaner to wipe it down from time to time to prevent dust and dirt from building up. Check the screw regularly to ensure it remains tight. If you notice any unusual noise or movement from the hinge, it might be a sign that it needs to be tightened or inspected further.