Using this chain guard is easy. First, measure your engine and kart to see if you need to cut and trim the guard. You can use regular cutting tools for this. Once it's the right size, use the nerf bar mounting holes to attach it to your kart. Then, fold and snap it together at the front to cover the chain and sprocket. When using your kart, make sure the chain guard is firmly attached. Check it regularly to see if there are any signs of damage. If you notice cracks or loose parts, replace the guard immediately. To maintain it, clean the guard with a mild soap and water solution. Avoid using harsh chemicals as they can damage the plastic. Keep it in a dry place when not in use to prevent any warping.