Using these crane forks is easy. First, attach the forks to your crane using the simple easy - attach assembly. Make sure there are no cables or pulleys in the way. Next, adjust the stop according to the size of your pallet - it can handle 36", 40", and 48" pallets. When using the trolley, ensure the load is at least 1500 to 1750 lbs, or it may not work properly. If you're dealing with standard 48" pallets, the general - purpose tines are a great choice. For other materials like brick or cubed/banded block, go for the block tines. As for maintenance, regularly check the frame and tines for any signs of wear or damage. Clean them after use to prevent rust and keep them in good working condition. Also, make sure the king post and adjustable parts are well - lubricated for smooth operation.