Using this CATERPILLAR excavator is easy. First, place the optional Bworld figure in the fully glazed driver's cab. Then, use the hand lever to control the excavator arm for digging. It can work below the vehicle level, so you can reach low - lying areas. When using it in sandpits or playrooms, make sure the area is clear of obstacles. For maintenance, you can open the two engine hatches. Check the engine regularly to keep it running smoothly. Don't forget to clean the chain links after use to prevent dirt build - up. And always store it in a dry place to avoid rust.