To use the CAT312E - 40FT, first, make sure you've familiarized yourself with the controls. Start the machine and operate it according to your work needs. When using the bucket, adjust the angle and force as required. Remember to always follow safety procedures. For example, wear appropriate safety gear. As for maintenance, regularly check the machine for any signs of wear, especially in high - stress areas where we've used premium materials. Keep the machine clean and lubricate moving parts on a regular basis. Also, check the bucket capacity indicator to ensure efficient operation.