Using this AS3 front brake disc guard is easy. First, remove the front wheel spacer from your Husqvarna bike. Then, attach the guard in its place. Make sure it's firmly mounted so it can do its job well. When riding, the guard will protect your front brake disc from rocks and debris on the road or trail. It also helps cool the brake caliper, which means better braking for you. As for maintenance, regularly check the guard for any signs of damage. If you notice cracks or excessive wear, you can easily replace it as replacement guards are available. Keep it clean by washing it with mild soap and water every once in a while. This will ensure it lasts and continues to protect your brake disc effectively.