Using this Chef Parisienne oven hinge is easy. First, make sure your oven is turned off and cooled down. Remove the old hinge by unscrewing the bolts carefully. Then, align the new hinge with the mounting holes on your oven door and frame. Secure it with the bolts. Make sure the 'J' and 'S' stamps are in the right positions as described. When you're done, test the door to ensure it opens and closes smoothly. As for maintenance, keep the hinge clean. You can use a soft cloth to wipe away any dirt or debris. If you notice any signs of wear, like the door not closing properly again, check the pivot points. If you're still unsure about anything, don't hesitate to contact us. And remember, if you're not certain if this part fits your oven, give us your model number and we'll help you out.