Using this Jecko sprocket protection guard is easy. First, choose the right diameter for your sprocket, either 200mm or 220mm. If you want full protection, get two guards for both sides of the sprocket. Simply attach the guard to the sprocket following the standard installation steps for such parts. When it comes to maintenance, regularly check the guard for any signs of wear or damage. Clean it with a soft cloth and mild detergent if it gets dirty. Make sure the optional spacer, if used, is also in good condition. If you notice any cracks or significant wear, it's time to replace the guard to keep your sprocket well - protected.