Using the IAG V2 Timing Belt Guide is easy. First, make sure your engine is turned off and cooled down. Then, remove the old OEM timing belt guide and install the new IAG guide using the provided zinc - coated socket cap screws and washers. Adjust the guide to set the proper clearance for your timing belt. When using an aftermarket timing belt, you can use the adjustable feature to make it fit perfectly. As for maintenance, regularly check the guide for any signs of wear or damage. Keep it clean and dry to maintain its anodized black finish. If you notice any issues, contact IAG's customer service for help.