Using your Kryptonite New York Noose 1275 Chain Lock is easy. First, find a secure object to lock your bike to. Use the cinch loop to wrap the chain around the object and your bike, using as little chain as possible for a tight lock - up. Insert the shackle of the Evolution series 4 Disc Lock through the chain and lock it. You can use the lighted key at night to easily find the keyhole. When it comes to maintenance, keep the lock clean and dry. If it gets dirty, you can wipe it with a clean cloth. The sliding dustcover protects the cylinder, but make sure it's not blocked. Replace the battery in the lighted key when it runs out. Always keep your keys in a safe place, and take advantage of the Key Safe Program if needed. Remember, this lock is heavy (3.15kgs), so be careful when carrying it to avoid any injuries.